Author: Kevin

Why Your Air Conditioner Fan Isn’t Working

Written by Kevin on April 18, 2024. Posted in HVAC.

Air conditioners (ACs) come with two fans, which include one on the inside of your home and one on the outside. The indoor AC fan is responsible for circulating air over your refrigerant coils. It cools the air before it’s sent through your ventilation ducts. As for the outdoor AC fan, it blows air over warmer refrigerant, removing heat so your system can keep your home cool. When either of these fans fails to work, it will affect the AC’s ability to cool your home. Knowing how to detect a fan problem and troubleshooting methods can help resolve the issue more efficiently. Here are nine common reasons your air conditioner fan might not work.

1. Malfunctioning Capacitor

The air conditioner’s capacitor is essential for providing the initial jolt of electricity to start the fan motor. When the capacitor malfunctions, the fan may not start at all or may struggle to start. You could be having problems with the capacitor if you hear a humming sound from the outdoor unit without the fan turning or the fan makes a clicking noise but won’t spin.

To diagnose a malfunctioning capacitor, technicians usually use a multimeter to test its capacitance. If the capacitor is indeed faulty, they will remove and replace it. Besides, it is important to remedy this issue quickly so that the fan motor doesn’t sustain damage, requiring a more costly repair.

2. Thermostat Issues

The thermostat is the control center for your air conditioning system. It turns the cooling system on and off to maintain the temperature you’ve set. If the thermostat isn’t working properly, it may fail to signal the air conditioner to turn on. This especially happens if the malfunction isn’t in the wiring but in the operational components, like the temperature sensor or another electronic component.

Some common issues your thermostat might have include a misconfigured or outdated thermostat, dead batteries or faulty wiring. Sometimes, a recalibration process is all you will need to get things back on track, and other times, replacing the battery handles things perfectly. But when your thermostat is beyond these simple solutions, you must call a professional to replace your system.

3. Circuit Breaker Is Tripped

This may sound basic, but a tripped circuit breaker can shut the whole system down. Your air conditioner’s fan needs that electrical current to keep it spinning. Circuit breakers are designed to trip when they detect electrical overloads or short circuits, which protects your home’s electrical system from damage.

When this happens, first locate your home’s electrical panel and check for tripped breakers. If you find one, reset it by switching it off and back on. If the breaker continues to trip repeatedly, it is a sign of a serious electrical problem. Shut the system off and call a professional HVAC technician from Beltway Air Conditioning and Heating to help you.

4. Frozen Evaporator Coil

If the evaporator coil in your air conditioner freezes, it can prevent the fan from blowing air effectively. A number of issues can cause the evaporator coil to freeze, including restricted airflow, low refrigerant levels or a dirty coil. Fixing an evaporator coil that has iced over will require you to turn off your air conditioner and let the ice thaw. Once the ice has completely thawed, our HVAC technicians can inspect your air conditioning system. Whether it requires cleaning the coils properly, adding refrigerant to the proper level or repairing leaks in the system, they will determine the cause and fix it.

5. Contactor Problems

The contactor in an air conditioner is a small device that is responsible for controlling the flow of electricity in your system. When you set the temperature on your thermostat, contactors conduct and restrict electrical currents that tell your air conditioner whether or not it should operate.

But how do these parts burn out? Well, like any part of any system, contactors wear out with age. Another way contactors get burnt out is when your AC system overheats. When this happens, the electrical flow of your system is interrupted and the adjacent AC components will not receive the electricity that they require and, therefore, will not operate. Besides, there are times when contactors can get stuck in the “up” or “down” position. If they get stuck in the “up” position, they won’t stop the electrical flow. In contrast, if it’s in the “down” position, the contactor will continue to run electricity to the components even if the cooling cycle has finished or, in some cases, is not supposed to be running at that time.

Therefore, if your AC fan is not working, it might be because the contactors controlling electricity to your AC fan are stuck in the “up” position or have burnt out. For this reason, Beltway Air Conditioning and Heating recommends always ensuring that you perform general maintenance on your system so you can prolong its life. However, if you think you might be having AC system issues related to a bad contactor, it’s never too late to call a technician from Beltway Air Conditioning and Heating since just a simple repair now might save a full replacement of AC parts later.

6. Air Filter Is Blocked

A dirty air filter is another common and easy-to-fix situation that sometimes results in your air conditioner fan not working. The air filter protects the system’s internal coils and the blower fan from dust, dirt and other airborne particulates. This keeps the coils cleaner and indoor air fresher. A clogged air filter restricts airflow so much that it might feel like your indoor fan isn’t properly circulating air. In many cases, restricted airflow shuts the entire system down. Luckily, simply cleaning or replacing the air filter should get the fan blowing again.

7. Broken Fan Blade

If your system suddenly starts making unusual sounds or vibrating, it could be that a fan blade in the outdoor unit is broken. A broken fan blade may be out of balance and strike other components in the compressor unit. To troubleshoot, you must first turn off your system, go to the outdoor unit and look through the top to see if the fan blades are intact. If a blade is broken or damaged, don’t try to restart your system; instead, call a professional to help with the repair.

8. Dirty Bearings

The fan motor spins thanks to the bearings in the motor. Those bearings can become dirty or dry out and create friction, which can cause the fan to produce some noise or stop working. Lubricating old bearings or replacing them can fix this issue and get your fan back working.

9. Wiring Problems

Faulty or loose wiring can prevent the fan from getting power to the fan motor. This can be due to poor installation, rodents chewing through the wires or simple wear and tear that occurs over time. Electrical problems can be dangerous, so it’s best to have a professional diagnose and repair a wiring problem.

When to Call the Professionals

Do you have an AC fan that isn’t working? Beltway Air Conditioning and Heating can find the problem and make sure it’s handled quickly. We handle repairs on every type of air conditioner, no matter the brand. In addition to AC and heating repairs, we also offer indoor air quality, duct cleaning and plumbing services. If you reside in Columbia, Hanover and the surrounding areas, contact us today at Beltway Air Conditioning and Heating to book an appointment.

Troubleshooting an AC compressor that won't turn on in Hanover MD.

Signs Of An AC Freon Leak You Shouldn’t Ignore

Written by Kevin on April 10, 2024. Posted in Cooling, HVAC.

Taking an air conditioner system for granted is normal for many people. When it’s properly working, you probably don’t think about it much. You enjoy the cool air in your home when it’s hot outside. However, it can become all you can think about when your AC stops working or has a severe problem.

Freon is a refrigerant, a chemical essential for your air conditioning unit to function properly. This gas repeatedly goes through an evaporation process inside your AC system. The constant evaporation cycle produces cool air that blows into your home. Under normal conditions, Freon is part of a closed system. When Freon leaks, your AC unit begins working poorly.

Catching a Freon leak early and contacting an HVAC technician to repair your AC is vital to your home’s comfort. Additionally, when you ignore a potential Freon leak, further damage can occur to your AC unit, leading to a more costly repair or replacement later. In this piece, we’ll cover 10 signs that your air conditioning system may have a Freon leak.

10 Common Signs of an Active AC Freon Leak

1. Hissing Noises or Bubbling Noises

One common sign that an air conditioning system is suffering from an active Freon leak is when you hear bubbling or hissing noises emanating from the indoor or outdoor cabinet. Because the refrigerant in your system is sealed under intense pressure, any structural puncture will force the gas to escape. The specific sound you hear depends entirely on the location of the breach, the line pressure, and the physical size of the hole. Smaller pinholes in the evaporator coil typically produce a persistent hissing sound, while leaks in liquid lines often result in a distinct bubbling noise.

2. Spikes in Your Monthly Electric Bill

The underlying symptoms of a refrigerant leak are not always immediately obvious. More noticeable system failures may not occur until the leak worsens over time. However, one early indicator you should always monitor is your monthly electricity bill. As Freon leaks out, the system’s cooling capacity drops. This forces the unit to run significantly longer cycles to reach the temperature set on your thermostat, wasting electricity. If you notice a drastic increase in your electrical costs without an increase in outdoor temperatures, a leak is highly likely.

3. Water Leakage Around the Unit

When an AC unit suffers from a refrigerant leak, it alters the pressure balance inside the system, causing the indoor evaporator coil to drop below freezing. As warm, humid indoor air passes over this freezing coil, the natural condensation freezes solid. When the system cycles off, this accumulated ice melts rapidly, overflowing the primary condensate drain pan. If you notice puddles forming around your indoor furnace closet or water actively dripping from your ceiling vents, you are witnessing the aftermath of a frozen system.

4. Insufficient Cooling

Capacity

While there are a handful of reasons an air conditioner might fail to lower your indoor temperatures, an unresolved Freon leak is one of the most common. When the physical volume of refrigerant inside your system diminishes, the heat-absorption process suffers. If you find yourself turning the thermostat down incredibly low, yet the air pushing out of your supply registers feels stagnant, and room temperatures refuse to budge, your system is likely starving for refrigerant. After a Freon leak is fixed, any necessary Freon that was lost from the system will need to be replaced.

5. Warm Air

Since Freon’s primary purpose is to absorb heat from your indoor air, a drop in your system’s Freon levels leaves that indoor heat trapped inside the loop. Instead of returning crisp, conditioned air to your living spaces, your system begins venting warm air back into your home. Note that if you just turned your system on, it may blow warm air for a minute or two as the lines pressurize, which is normal. However, persistent warm air means it is time to call a professional.

6. Rapid On-and-Off Cycling (Short-Cycling)

Modern air conditioning systems utilize built-in safety controls, such as low-pressure cutout switches, to protect internal machinery. When an active leak drops system pressure below safe operating parameters, the safety switch triggers, abruptly shutting the system down. As pressures briefly stabilize, the system attempts to restart, creating a rapid, repeating loop of on-and-off cycling. This behavior places immense mechanical stress on your system controls and can lead to electrical failure.

7. Evaporator Coil Ice Build-Up

When a system lacks proper refrigerant pressure, the internal temperature of the evaporator coil drops well below the standard $32^\circ\text{F}$ Fahrenheit freezing point. Ambient moisture from your home’s air freezes instantly upon contact with the metal fins, eventually encasing the entire coil in a thick block of ice. In extreme scenarios where the indoor air handler is positioned close to primary duct pathways, pieces of this ice can break away, shooting directly out of your home’s supply vents.

8. Unusual, Sweet Chemical Smells

Pure Freon refrigerant is naturally heavier than ambient air, causing it to sink quickly toward floor level when a leak occurs. While generally odorless in trace amounts, a significant structural leak can produce a distinct, slightly sweet, oil-like chemical smell. If you notice this unusual aroma lingering directly next to your outdoor condenser, near your indoor closet vents, or pooling along the floor around your equipment, your system requires immediate professional testing.

9. Health Problems & Symptoms

Inhaling concentrated refrigerant vapors can cause a variety of acute physical health issues. Prolonged exposure to leaking Freon gases within an enclosed household can cause respiratory irritation, sudden nausea, dizziness, and severe headaches. If anyone in your Hanover household regularly suffers from these specific symptoms exclusively when the cooling unit is operating, turn the system off immediately, open your windows, and seek professional medical guidance.

10. Complete System Failure

If an air conditioner is forced to overwork for months to compensate for a lack of refrigerant, the extreme operating temperatures will eventually cause complete system failure. When internal machinery is pushed past its structural limits, primary electrical relays fail, controls short out, or the system compressor locks up entirely. Catching a leak early prevents a standard line repair from turning into an expensive emergency system replacement.

Don’t ignore any signs that your AC system may be leaking Freon. If you experience anything mentioned in this article and you live in the Hanover area, Beltway Air Conditioning and Heating is here to help. We offer reliable heating, cooling, and plumbing services you can trust. To learn more, contact us today!

What To Do When Your AC Compressor Won’t Turn On

The outdoor compressor is the absolute heart of your air conditioning system, responsible for pressurizing and circulating refrigerant through your cooling lines. If your indoor blower fan is running but you notice your outdoor unit is completely silent and venting warm air, your compressor has failed to kick on.

If you find yourself facing this common cooling crisis, follow this troubleshooting sequence immediately:

Step 1: Verify the Thermostat Parameters: Double-check that your thermostat is set to “Cool” mode and that the target temperature is placed at least $3^\circ\text{F}$ below your current room temperature. If the thermostat display is completely blank, replace the batteries immediately.
Step 2: Inspect Your Electrical Panel: Go to your home’s main electrical breaker panel and check the dedicated, high-voltage dual-pole breaker labeled for the outdoor AC unit. If the breaker has tripped into the middle position, flip it completely to “Off” before resetting it back to “On.”
Step 3: Check the Outdoor Disconnect Box: Open the metal weatherproofing box mounted on the wall next to your outdoor unit. Ensure the high-voltage pull-out fuse block is firmly pushed into the “On” position. If your disconnect uses a traditional switch, verify it has not been accidentally flipped off.
Step 4: Clean a Clogged Air Filter: A heavily clogged, dirty air filter blocks all ambient airflow across your indoor evaporator coil, causing the system to freeze up completely. This triggers the low-pressure safety switches, shutting off power to the outdoor compressor to prevent liquid slugging. Replace your filter and let the system thaw for 4 to 6 hours.
Step 5: Listen for Humming Noises: Walk outside to your silent outdoor unit. If you hear a distinct, quiet humming sound coming from the cabinet but the fan and compressor refuse to spin, your system’s run capacitor has likely failed and will need to be replaced by an expert.

Dealing with an indoor system freeze that has triggered a water leak around your furnace or utility room floor? Don’t risk property water damage. Reach out to our certified team for professional sump pump repair in Hanover, MD, to safely clear the line overflow before it compromises your home’s foundation.

A Crucial Safety Warning Regarding Refrigerant Top-Offs

If your compressor won’t turn on due to a low-pressure safety lockout caused by a Freon leak, do not attempt to buy DIY refrigerant recharge kits. Adding refrigerant to a leaking system without finding and fixing the physical leak is illegal under EPA regulations and will cause severe, irreversible hydraulic damage to your compressor’s internal valves.

If you have completed basic electrical checks and your outdoor unit still refuses to run, turn the system off at the thermostat immediately to prevent internal motor burnout.

Schedule Certified Local Support

Don’t let an unresolved refrigerant leak or a failed outdoor compressor compromise your home’s safety and comfort. If you notice any of the warning signs outlined in this guide, our certified local HVAC technicians are here to help.

We utilize advanced electronic leak detectors and digital manifold gauges to locate system breaches accurately, patch lines safely, and restore your system’s factory parameters cleanly. Reach out to our customer service team today to book your comprehensive cooling system diagnostics or emergency repair visit!

How To Fix Cold And Hot Spots With HVAC Air Balancing

Written by Kevin on March 22, 2024. Posted in HVAC.

Is your home plagued by uncomfortable hot and cold spots? Do some rooms feel like saunas while others are downright chilly, even with the thermostat set to the same temperature? This temperature imbalance is likely due to poor HVAC air balancing.

Proper air balancing ensures your heating and cooling system distributes air evenly throughout your home, so there are no hot or cold zones. Air balancing techniques like adjusting duct dampers, adding booster fans, and sealing ductwork can help optimize airflow and create consistent, comfortable temperatures in every room.

Our licensed technicians at Beltway Air Conditioning and Heating can accurately identify and fix the causes of unpleasant temperature variations using advanced air balancing techniques.

Adjusting Duct Dampers to Redirect Airflow

One effective method for fixing hot and cold spots in a home is adjusting the duct dampers. Duct dampers are movable plates inside the ductwork that control the airflow to each room.

By adjusting these dampers, more air can be redirected away from rooms that get too hot and toward rooms that are too cold. The goal is to find the ideal balance point for each damper so that air is distributed evenly without cutting off any room completely.

Getting the precise damper adjustments right requires specialized tools to analyze the home’s ductwork layout and airflow. It also takes training and HVAC expertise to determine the proper positioning for optimum temperature balance, making it all the more important to hire a licensed HVAC technician to do the job.

Adding Booster Fans to Enhance Airflow

For rooms located far from the central air handler, the long duct runs can make it difficult to deliver enough air. This can create persistently cold spots. Adding small in-line booster fans within the ductwork leading to these rooms is an effective solution.

The in-line duct fans provide an extra boost to the air, helping to ensure that adequate air volume makes it down the long ducts to reach remote areas. The fans increase airflow to only where it’s needed without impacting the rest of the HVAC system.

Our technicians will inspect your home’s duct layout to determine the optimal locations to install in-line booster fans. Strategic placement and proper sizing of these compact duct fans can remedy cold spots caused by insufficient airflow to distant rooms. With the fans installed, we’ll balance and optimize the airflow to maintain comfortable temperatures throughout the home.

Sealing Ductwork to Improve Efficiency

Leaks in your ductwork can contribute to air balancing issues and hot or cold zones by allowing conditioned air to escape before reaching rooms. Sealing ducts helps optimize airflow efficiency so that more air makes it to intended locations instead of leaking out along the way.

Our technicians use advanced diagnostic tools to detect duct leaks. We’ll seal any leaky joints, disconnected spots, or punctures with durable metal tape and mastic sealant specially designed for HVAC systems. Sealing your ducts prevents wasted energy from leaks so that your system can maintain comfort and efficiency.

Effective sealing paired with proper air balancing ensures each room gets just the right amount of conditioned air for the hottest days and the coldest nights.

Adjusting Supply Registers to Control Airflow

Supply registers are the vents in your walls, ceilings, or floors that allow conditioned air to enter each room. The size and direction of these vents impacts how much air blows into the room. Adjusting your supply registers can help fix cold and hot spots.

If some rooms are too warm during winter, for example, try closing their supply vents partially to restrict airflow. For chilly rooms, make sure their supply registers are fully open, and divert any directional vents to point the air into the room. Opening or closing specific registers allows you to control the air volume room by room.

Keeping registers dust-free also enables proper airflow. Wiping down or vacuuming the registers can help keep them free of dust and other debris that restricts airflow, but investing in duct cleaning may also be a good idea. Our technicians have equipment and the knowhow to perform a thorough cleaning that most homeowners cannot. Let us inspect your registers and make any adjustments needed to help properly balance and condition each room.

Upgrading to Zoned HVAC Systems

For homes where simple register adjustments don’t completely resolve hot and cold spots, upgrading to a zoned HVAC system may be the answer. Some zoned systems have separate air handlers and thermostats for different areas of the home, where others rely on automatic dampers to route air where you specify.

This allows you to customize the temperature in specific zones like a master suite or living room without impacting other areas. The zoned system only conditions the air in rooms being used, which saves energy. Plus, zoning enables precise temperature control in any room that tends to deviate. Our team can install and integrate a new zoned HVAC system to help fix stubborn hot or cold spots for good.

Monitoring Static Pressure

Maintaining proper static pressure is crucial for balanced airflow throughout a home’s ductwork. Static pressure is the force moving air through the ducts. Too-high or -low pressure can create hot and cold spots throughout the home.

As we make air balancing adjustments, our technicians will monitor static pressure using specialized tools. Ensuring pressure stays in the ideal range for your HVAC system prevents overworking the blower motor while still allowing sufficient airflow.

Getting static pressure just right as part of the balancing process enables air to move efficiently throughout the ductwork. This allows each room to get the right amount of cooling and heating without any area being deprived of conditioned air, leading to better overall comfort.

Checking Insulation Levels

Insufficient insulation can lead to some rooms heating up or cooling down faster than others. Rooms above garages or with lots of windows often have less insulation. Upgrading insulation in hot and cold rooms can help them retain temperatures better.

Our team can inspect the insulation levels throughout your home to identify problem areas. We can add insulation to walls, attics, basements, and crawl spaces using fiberglass batts, spray foam or blown-in cellulose. Beefing up insulation regulates temperatures so that rooms stay comfortable longer after your system cycles off.

Adjusting the HVAC System Blower Speed

The speed of your HVAC system’s blower fan can impact air balancing and cause temperature inconsistencies. A blower speed that is too high can short-cycle air through the system before rooms get sufficiently heated or cooled.

Our technicians can adjust the blower speed as needed as part of a comprehensive air balancing plan. Lowering an excessively high fan speed allows more time for air to be conditioned properly as it circulates. This prevents some rooms from getting an uneven share of heated or cooled air.

Schedule Air Balancing Service From the Experts

For even, comfortable temperatures throughout your home, the key is proper HVAC system air balancing. Our technicians at Beltway Air Conditioning and Heating have the expertise to analyze your home’s airflow issues and implement customized solutions. We also can provide all heating and cooling services your home needs.

Contact us today in Hanover, MD, to schedule comprehensive air balancing services. We’ll tailor a plan to your home’s needs so you can finally say goodbye to uncomfortable temperature imbalances. Our expert technicians deliver customized solutions to create the ideal airflow for consistent comfort in every room.

What To Do When Your AC Compressor Won’t Turn On

Written by Kevin on March 8, 2024. Posted in HVAC.

Having a troubleshooting guide for an AC compressor that won’t turn on helps homeowners diagnose the issue quickly and accurately, allowing for timely repairs. A comprehensive troubleshooting guide ensures that individuals can identify potential safety hazards associated with electrical or mechanical failures. If your AC compressor won’t turn on, use this guide to pinpoint the cause. Then, contact an HVAC technician right away to confirm the cause and implement the right solution.

What Does an AC Compressor Do?

An AC compressor, a crucial component of any HVAC system, is responsible for increasing the pressure of the refrigerant and distributing it throughout the cooling system. Its principal use is to raise the temperature and pressure of refrigerant gas by compression. The next step is for the high-pressure gas to pass past the condenser coil, which helps the refrigerant condense into a liquid by releasing heat into the surrounding air. After that, the liquid refrigerant makes its way to the evaporator coil, where it cools the air inside by absorbing its heat. The compressor is the key component in the air conditioner’s heat exchange mechanism.

Maryland’s Environmental Factors That Affect AC Compressors

Hanover, Maryland’s diverse climate presents various environmental factors that impact AC compressors. The state experiences hot and humid summers, with temperatures often exceeding 90°F. High humidity levels can strain compressors by requiring them to work harder to remove moisture from the air. Additionally, Maryland’s winters bring cold temperatures, occasionally dropping below freezing. Cold weather can cause issues like refrigerant leaks and compressor damage. Furthermore, Maryland’s coastal location exposes AC units to salty air, increasing the risk of corrosion.

What It Means When the AC Compressor Won’t Turn On

If the AC compressor won’t turn on, the entire unit won’t work. This can lead to major inconveniences in your daily life since the system won’t be able to cool your home. There are many reasons why the AC compressor might not come on. Knowing the exact cause is vital to fixing the issue correctly.

Faulty Thermostat

A faulty thermostat can cause the AC compressor not to come on for several reasons. It could be a simple issue like dead batteries, incorrect settings or a malfunctioning sensor. Additionally, wiring problems, dust accumulation or even a thermostat placed in the wrong location can lead to compressor issues. Addressing thermostat issues promptly is crucial for restoring proper functionality to the AC system and ensuring optimal cooling performance.

Tripped Breaker

A tripped circuit breaker can stem from various causes, such as electrical overloads, short circuits and faulty wiring. When the circuit breaker trips, it disrupts the power supply to the AC compressor, preventing it from turning on. This could result in the compressor not receiving the necessary electrical power to operate effectively. Identifying and addressing the underlying cause of the tripped circuit breaker is necessary to restore power to the entire cooling system.

Blocked Condensate Drain

Air conditioning systems have a condensate drain line that can easily clog due to debris accumulation, algae blooms or mineral deposits. When this happens, it makes it impossible for the unit’s condensate water to drain properly. As a result, water begins to accumulate in the system, activating a safety feature that turns off the compressor’s power to prevent water damage. Deactivating this safety feature and powering back on the compressor depends on removing the clog from the condensate drain.

Faulty Contactor

Corrosion, electrical issues and regular wear and tear can lead to the failure of the AC unit’s contactors. When the contactor fails to engage properly, it disrupts the electrical circuit that powers the compressor. Consequently, the compressor does not receive the necessary power to start up, causing the air conditioner to cease functioning. To rectify the issue and restore operation, an HVAC technician must replace the broken contactor with a new one. This ensures the compressor resumes normal operation, allowing the AC unit to function efficiently once again.

Faulty Capacitor

A malfunctioning capacitor in an AC unit can hinder the compressor from starting up in several ways. Degradation of the capacitor may lead to issues such as electrical shorts or electrolyte leakage. When the capacitor fails, it may not provide sufficient electricity to start the compressor motor at all. To restore proper operation, it’s crucial to have an expert replace the defective capacitor with a new one.

Compressor Overload

The compressor’s overload safety system will activate if the internal temperature or pressure reaches dangerous levels, causing the machine to shut down. Possible causes of this problem include refrigerant leakage, blocked coils, and inadequate airflow. Preventing compressor overload requires resolving the underlying problem, such as dirty condenser coils, a broken fan motor, or electrical issues.

Refrigerant Leak

If there isn’t enough refrigerant in the system, the compressor won’t get enough pressure to work properly, and it won’t start. These leaks reduce the cooling capacity and efficiency of the system, which may cause the compressor to overheat. To avoid compressor failure and make sure the air conditioner is working properly, it is critical to find leaks quickly and fix them.

Faulty Control Board

A faulty control board in an AC system can prevent the compressor from starting due to various reasons. Issues such as electrical malfunctions, component failure, or damage to circuitry can disrupt the signal transmission necessary for compressor activation. Additionally, a malfunctioning control board may fail to communicate with other system components, leading to compressor inactivity. Fixing this problem will require the assistance of a licensed HVAC expert.

Faulty Pressure Switch

Problems such as sensor malfunctions, damaged wiring, or inaccurate pressure readings can hinder a pressure switch’s ability to signal the compressor effectively. Additionally, if the switch port becomes blocked or clogged, it may provide erroneous pressure readings. These issues can disrupt the proper functioning of the pressure switch, preventing the compressor from receiving the necessary signals to start. The only way to fix this is to have an HVAC technician replace the faulty pressure switch.

What to Do

Homeowners can take many preventative measures to avoid issues with their air conditioning compressors. To keep the compressor from overworking, it’s important to change the air filters regularly. Keeping the outside unit clean and clear of dirt, landscaping, vegetation, and pets is important for keeping it running at its best. Preventing compressor damage also requires checking refrigerant levels and making sure there are no leaks. Verifying the integrity of electrical connections and parts regularly guarantees their proper operation. The best way to stay on top of these upkeep requirements is to schedule annual professional maintenance. If you’re already experiencing problems with an AC compressor, contacting an HVAC technician can prevent further problems. Ignoring compressor problems will lead to significant issues and costly repairs down the line.

With warmer weather right around the corner, there’s never been a better time to schedule AC maintenance. Beltway Air Conditioning and Heating works on heaters and air conditioners. We also provide indoor air quality and duct cleaning services. If you’re experiencing issues with your AC compressor, call us right away to schedule an AC repair.

Reasons Your AC is Freezing Up and What to Do

Written by Kevin on March 1, 2024. Posted in HVAC.

Are you experiencing issues with your air conditioning system frequently freezing up? A frozen AC can be a serious issue since it has the potential to cause extreme damage, so it’s not a problem you should ever ignore. Luckily, there are only a handful of issues that can cause an AC to start freezing up, and some of them are things you can overcome yourself.

What to Do If You Suspect Your AC Is Frozen

A frozen AC system is an easy issue to spot. When the evaporator coil freezes and gets coated with ice, the system will no longer be able to remove heat from your home. This means that the temperature in your house will quickly start increasing. The air coming out of your vents will also be hot since all the system can do is circulate hot air when it is frozen.

If your AC does freeze up, you should always shut it off immediately. Allowing the system to continue running when frozen puts the compressor motor in the outdoor condenser unit at high risk of seizing or burning out.

When an AC functions normally, the refrigerant captures enough heat that it naturally changes from a liquid into a gas as it moves through the evaporator coil and gets pumped back outside. When the system freezes up, it leads to the refrigerant remaining in a liquid state. If liquid refrigerant enters the compressor, it can quickly boil and cause some of the oil that lubricates the compressor motor to burn off. This can then lead to the motor not being properly lubricated, which can cause it to burn out.

A burnt-out compressor motor is an extremely expensive issue to repair and can potentially cost about as much as installing a whole new condenser unit. That’s why it’s important that you shut the system off immediately if it freezes to prevent damaging it. Depending on what caused the system to freeze, it may be something you can quickly fix on your own. All of the following issues are really the only things that can cause an AC to freeze, so it is worth checking a few things before calling in the help of an AC technician.

Clogged Air Filter

A clogged air filter is by far the most common issue that will lead to an air conditioning system freezing up so it is always the first thing to check for. The issue is that a clogged filter greatly restricts how much warm air can be drawn into the system. The refrigerant in the system is extremely cold when it first enters the evaporator coil and then quickly starts warming up as it captures heat from the air. The problem is that a dirty, clogged air filter will massively reduce the amount of warm air coming into the system and moving across the evaporator coil. If there isn’t enough warm air continually flowing across the coil, the refrigerant will stay cold enough that all of the condensation on the coil starts freezing.

AC manufacturers generally recommend replacing the air filter in your system every three months. However, there are often times when the filter will start clogging up more quickly and need to be replaced sooner. This is why we recommend taking out the filter and inspecting its condition every month. As soon as the filter starts getting darker colored, it is time to replace it.

If your AC freezes up and the filter is quite dirty, replacing it will often solve the problem and prevent it from freezing up again. However, you need to wait at least an hour or two to make sure that the evaporator coil completely thaws before trying to turn the system on again. If the system does end up freezing again after replacing the filter, you’ll want to leave it shut off until you can have a technician inspect it.

Closed or Obstructed Vents

The other thing you should check if your AC freezes up is that all of the supply and return air vents are fully open and not clogged with debris or blocked by furniture or other items. The return vents are where warm air is drawn into the system. Although these vents generally can’t be closed, they will prevent enough warm air from coming into the system if they are clogged or obstructed.

The supply vents are where all of the cool air from the system flows out. To work properly, the majority of the supply vents in a home need to be fully open. Having one or two closed vents typically isn’t a problem, but any more than that can lead to the system freezing up. The issue is that when too many supply vents are closed or obstructed, lots of air gets trapped inside the ducts, which leads to the pressure increasing. When working properly, an AC system is constantly drawing in and blowing out the same volume of air. When the air starts to back up in the supply ducts and the pressure increases, it makes it much more difficult for the blower to bring sufficient air back in and can lead to the evaporator coil freezing.

Dirty Evaporator Coil

A dirty evaporator coil is another common culprit that can cause an AC to freeze up. Some dust and dirt always end up collecting on the evaporator coil over time, which is why the coil always needs to be cleaned every year as part of a preventative AC maintenance service. If the coil isn’t cleaned regularly, so much dust can build up that it effectively insulates or shields the coil. This means that the warm air coming into the system can’t come into direct contact with the coil, which greatly reduces how much heat the refrigerant can absorb. Again, if the refrigerant isn’t capturing sufficient heat, it may stay cold enough that condensation on the coil begins freezing.

This is an issue that you will need to have a technician check for and fix. Trying to clean the coil yourself is always a bad idea since you could easily damage it and cause a refrigerant leak or make the system far less effective.

Dirty or Malfunctioning Blower

The blower or fan also needs to be cleaned regularly since it also collects lots of dust. When the blower gets too dirty, it can make it impossible for it to circulate sufficient air to prevent the system from freezing up. The same issue can also occur if the blower is malfunctioning or starting to wear out. In this situation, a technician will always fully clean the blower and then test it to see if it needs to be repaired or possibly replaced.

Low Refrigerant Charge

Your AC system needs to have the correct refrigerant charge or level to work properly. When the refrigerant charge is low, it leads to the pressure in the system decreasing. As the pressure decreases, the temperature of the refrigerant also decreases. If the charge is too low and the pressure is below a certain point, the refrigerant can get so cold that the evaporator coil constantly freezes up.

The refrigerant in an AC system flows in a closed loop, which means that the charge should always stay the same. If the charge is low, it often indicates that there is a leak somewhere in the system. However, low refrigerant charge can also occur due to improper maintenance or installation.

Beltway Air Conditioning and Heating is a locally owned company that provides professional HVAC services to residential and commercial customers in Hanover and the surrounding areas. Our technicians specialize in air conditioning maintenance and repairs and can help you overcome any issues causing your AC to freeze up. We also specialize in AC installation and the full range of heating services, so contact us today for any of your home comfort needs.

13 Reasons Why Your Air Conditioner Is Leaking Water

Written by Kevin on February 18, 2024. Posted in HVAC.

AC leaks cause water damage, mold growth, poor indoor air quality, and many other issues. These leaks are very common in Maryland where the notoriously high humidity can worsen AC condensation and exacerbate leaks. To prevent water damage and humidity-related problems, homeowners should fix AC leaks as soon as possible. Since repairing leaks can be tedious and dangerous, it’s best to let a professional handle the problem.

1. Disconnected Drain Line

A disconnected drain line will cause water to seep out of the air conditioner. This happens because the condensation that forms during the cooling process doesn’t empty correctly. To fix this, the technician will check the drain line and then reconnect it, making sure that it has a secure seal. The technician may use special fittings and supports to ensure the drain line stays connected.

2. Frozen Evaporator Coil

When frozen evaporator coils thaw, leaks may occur. This is usually due to low refrigerant levels, limited airflow, or unclean coils. The accumulation of ice puts pressure on the system and can easily overflow the drain pan. Repairmen fix this problem by checking the airflow, cleaning the coils, and refilling the refrigerant among other things. To prevent further leaks and frozen coils, it is essential to perform preventative maintenance such as replacing the air filter.

3. Clogged Drain Line

Water will back up in the system and create leaks if the drain line becomes blocked, which is usually due to debris or algae development. When this happens, technicians will remove the blockage by vacuuming or flushing the line among other options. Additionally, if the drain line twists or bends, it will not allow water to flow freely and may seem obstructed. When this happens, technicians fix it by moving or straightening the pipe. This restores appropriate drainage and stops the leak.

4. Damaged Condensate Pump

If the condensate pump in your air conditioner wears out or becomes damaged, it won’t be able to drain the water condensate as effectively. If not addressed promptly, this can lead to a leaky AC. To fix this, technicians check the pump and either fix it or replace it so that it works properly again. The best way to keep the pump in good working order and free of leaks is to maintain it regularly.

5. Clogged Air Filter

Some of the most common types of air conditioner filters include washable, pleated, fiberglass and HEPA. You should replace a fiberglass filter once a month, a pleated filter every three months, and a washable filter every three to six months. Keeping the filter clean on a regular basis improves airflow, which in turn reduces system strain and the likelihood of leaks. A clean filter also increases the unit’s lifetime and reduces the likelihood of system breakdowns.

6. Refrigerant Issues

Leaks, low levels or incorrect charging are the most common reasons for refrigerant problems in air conditioners. Corrosion or damage to the lines carrying the refrigerant can lead to major water leaks. Repairing leaks, refilling refrigerant, and checking system pressure are all ways that technicians handle these problems.

7. Blocked Vents or Registers

The limited airflow and temperature imbalances caused by clogged air vents and registers in an AC system can result in AC leaks. To prevent his issues, make sure that there are no objects, such as curtains or furniture, blocking the vents and registers. Always keep the vents completely open to allow the most air to circulate, and dust and clean them regularly. Proper ventilation eases the load on the system. This, in turn, reduces the likelihood of leaks and maximizes the effectiveness of your space’s cooling.

8. Improper Installation

A proper air conditioning installation includes many steps. Technicians must measure the area, choose a suitable unit, run ducts, connect refrigerant lines, fasten the unit, and check its efficiency. The wrong refrigerant charge, sloppy connections or poorly sealed ducts are all examples of how a poorly installed air conditioner can spring a leak. To avoid water damage and keep the AC running efficiently for its entire lifetime, it is crucial to have a professional install the unit correctly.

9. Cracked Drain Pan

The AC drain pan might develop cracks that are causecd by physical damage, corrosion, or normal wear and tear, which can cause leaks. To fix this, technicians check the pan, fix minor cracks, or replace the pan if it’s severely damaged. By keeping up with routine maintenance, you can spot drain pan problems before they cause a major disaster.

10. Leaky Ductwork

An air conditioning system’s ductwork is vital to its efficiency. The top causes of duct issues include poor installation, aging, physical damage, or deterioration that are caused by factors like high humidity. All of these issues compromise seals and joints in the duct system.

Leaky ducts can result in ineffective cooling, higher energy usage, and even water leakage. The technicians take care of this by checking for and fixing any leaks they find as well as making sure that there is enough insulation. Repairing ductwork that is leaking allows specialists to increase system efficiency, stop water damage, and keep cooling constant.

11. Dirty or Blocked Coils

The air conditioner’s coils can become dusty and blocked in a variety of ways. Dust and other airborne particles might eventually settle on the coils. Mold and mildew can form on the coils if the environment is too humid. The buildup of pet hair and dander may cause coil blockage in homes with pets. It’s also possible for the coils to clog if don’t keep a clean air filter. Furthermore, a buildup of outside debris, such as pollen or grass, may jam coils. Dirty and clogged coils can lead to a leaky AC. To address this problem, technicians will clean the coils and recommend regular maintenance.

12. Worn Out Insulation

Insulation in air conditioners helps keep the unit cool and efficient, but it can wear out and eventually cause a leak. It may also deteriorate when exposed to excessive humidity regularly. Incorrect installation, chemical exposure, and insect infestations are other possible culprits. Experts fix this problem by checking the insulation and replacing it if it’s deteriorated. If an insect or pest infestation is the cause, the technician may recommend extermination services.

13. Air Handler Issues

Air handlers are responsible for circulating conditioned air and controlling humidity levels. However, many things can go wrong with an air handler. Some of the most common issues are electrical problems, motor malfunctions, and clogged filters. All of these problems can cause AC leaks.

Service technicians fix this by checking the air handler for damage, fixing or replacing broken parts, and making sure that the air flows properly. Resolving problems with the air handler keeps the system running smoothly, optimizes the unit, and reduces the likelihood of leaks.

Need help with a leaky AC in Hanover, MD? Beltway Air Conditioning and Heating provides AC repairs, heater repairs, maintenance programs, duct cleaning, and so much more. Contact us now to experience the cool comfort you deserve.

Why Your Thermostat Isn’t Reaching The Set Temperature

Written by Kevin on February 13, 2024. Posted in HVAC.

One of the smartest ways to save money on energy bills is to invest in programmable and smart thermostats. Smart thermostats provide remote control and adaptive learning. Both technologies let you schedule energy-efficient temperature changes. These devices lead to enhanced personalized comfort and significant energy-saving capabilities. Maintaining the thermostats regularly enables precise temperature readings and optimal performance. Battery replacement, cleaning, and calibration are of the utmost importance. If you ignore thermostat maintenance and care, you may end up with a device that can’t reach the set temperature. When this happens, expert help is almost always necessary.

1. Incorrect Thermostat Settings

When it comes to home comfort and efficiency, nothing is more important than having the thermostat set correctly. Homeowners sometimes make the mistake of setting their thermostats too hot in the winter or too low in the summer. This makes it difficult for the system to achieve the proper temperature. For example, leaving the fan on the “On” setting is an example of an incorrect setting that might make it difficult to reach the set temperature.

2. Dead Batteries

The average life span of a thermostat battery is six to 12 months; however, this might vary with use. The thermostat’s inability to maintain the desired temperature due to dead or low batteries will cause problems with the HVAC system like ineffective heating and cooling. In order to keep the thermostat running smoothly, it is important to check and replace the batteries on a regular basis.

3. Dirty or Malfunctioning Sensors

The system will not be able to attain the set temperature if the thermostat’s sensors are dirty or not working properly. Erroneous readings caused by dust, dirt or malfunctioning sensors might result in improper heating or cooling cycles. For accurate temperature regulation and peak efficiency from your HVAC system, have a professional clean and maintain the sensors regularly.

4. Poor Thermostat Placement

Misplaced thermostats make it difficult to get reliable temperature readings. As a result, this makes it impossible for the system to attain the set temperature. Do not put thermostats in drafty places or close to heat sources. Placement on inside walls, away from light, windows, and appliances, is ideal.

5. Malfunctioning Heat Anticipator

A premature system shutdown may occur if the thermostat’s heat anticipator isn’t working properly, which throws off the timing of the heating cycle. This can cause the thermostat to fall short of its target temperature, leading to insufficient heating. If you want your thermostat to reliably predict when to turn off the heat for maximum comfort, an expert needs to check and modify the heat anticipator regularly. This mainly applies to older thermostats. Digital thermostats don’t have heat anticipators.

6. Software Glitches

Smart and programmable thermostats rely on complex software for tasks like learning, scheduling, and remote control. These operations are susceptible to disruption by software bugs, which may lead to faulty temperature settings or system failures. To avoid software-related problems, it is vital to update firmware regularly and troubleshoot as needed.

7. Power Supply Problems

If the power goes out or there are variations in the electrical current, the thermostat won’t be able to achieve the temperature you’ve programmed it to. This can lead to false temperature measurements and even a full system shutdown. For the thermostat to consistently work and keep the temperature under control, it is essential to have a steady power supply and to use surge protection. A whole-house surge protector is the best option for protecting your HVAC system against power surges. These devices protect thermostats and other HVAC appliances against sudden spikes in electricity. To further fortify your home’s HVAC system, you can install surge-protected power strips and point-of-use surge protectors for certain equipment.

8. Loose or Damaged Wires

Thermostats malfunction and provide erroneous temperature readings if their wires break or become loose. Experts will double-check the electrical connections during regular HVAC maintenance. The transmission of signals between the HVAC system and the thermostat relies on the correct wiring. It’s very important that you don’t attempt to perform any electrical work yourself. Trained and licensed HVAC workers have the expertise and skill that it takes to perform electrical work safely.

9. Faulty Relay Switches

Thermostats and HVAC systems lose connection if the thermostat’s relay switches are faulty. This can cause the system to malfunction, fail to attain the desired temperature and provide erroneous temperature control. To make sure the relays work properly, have a professional check them often, test them, and replace broken ones.

10. Dirty Air Filter

A dirty air filter limits airflow in an HVAC system. This makes it impossible for the thermostat to achieve the desired temperature. Plus, the system has to work harder due to the reduced airflow, which might cause overheating or overcooling. The easiest way to avoid this problem is by changing the air filter every one to three months, or any time that it is dirty.

11. Corroded Contacts

Thermostats have contact sensors that regulate the temperature, turn the fan on or off and perform other functions. When contacts get corroded, they interfere with these operations and make it harder for the thermostat to attain the set temperature. Humidity, condensation, and contamination are common reasons for corrosion. To keep the contacts from corroding, homeowners should keep the thermostat dry and schedule timely repairs whenever they notice rust.

12. Sensor Calibration Errors

Thermostats use a variety of other sensors. Some sensors gauge the ambient temperature. Humidity sensors measure moisture levels. Occupancy and proximity sensors detect resident activity and user interactions. Flaws in the calibration of these sensors can give rise to inaccurate temperature readings. Because of this, the thermostat may fail to heat or cool the home according to the desired setting because it misreads the ambient temperature. The best way to avoid this issue is by having a professional calibrate the thermostat sensors during every HVAC maintenance visit.

13. HVAC Compatibility Issues

Problems with HVAC compatibility can make it difficult for a thermostat to regulate the temperature. Problems like these occur when the thermostat isn’t designed to work with the specific wiring or technology of the HVAC system. Because of this, homeowners should check to see whether a thermostat is compatible with their HVAC system before buying it. It also helps to talk to experts in the field or read the manufacturer’s compatibility specifications.

14. Display Problems

Electrical problems, broken parts and software errors can all cause thermostat displays to fail, leading to flickering or blank screens. This can make it impossible to know what the set temperature is. Experts take precautions during installation, tie wires securely, and update the thermostat’s software to prevent these issues. To avoid display problems in the future, it’s important to protect the device from power surges and to schedule expert checkups.

Homeowners in Hanover, MD rely on our technicians at Beltway Air Conditioning and Heating to meet all of their thermostat needs. We also help homeowners with HVAC installations, repairs, and maintenance, as well as indoor air quality testing and duct cleaning. Contact us today to schedule a thermostat inspection.

A Homeowner’s Guide to HVAC Ductwork

Written by Kevin on February 12, 2024. Posted in HVAC.

The ductwork in your Hanover home is a vital part of the HVAC system. All homeowners should know about the common issues, the various components that make up their system, and the maintenance needs of ductwork. This will all help you to quickly recognize problems and keep your home’s ductwork in the best condition possible.

Ductwork Components

Several parts make up your home’s ductwork system. The supply ducts are usually on ceilings, walls, or floors. They are responsible for transporting the air to the rooms in your home from the HVAC system. You will find the return ducts in a central location, such as ceiling cavities or hallways. These will take air from your rooms and return it to your HVAC unit.

The grilles and air registers function as intake points for return air. They also control the level of airflow in rooms. There are plenums at the ductwork and HVAC unit junction that connect your duct system to your HVAC unit.

HVAC Ductwork Types

You can choose from different types of HVAC ductwork. Flexible ducts have a metal inner cord or flexible plastic, an outer layer, and insulation. This type is versatile, easy to install, and ideal for areas that have limited access. Sheet metal ducts are usually galvanized steel. They are long-lasting, durable, and less vulnerable to damage.

Fiberglass duct board has an outer coating over fiberglass insulation. It is resistant to moisture, lightweight, and good for thermal insulation. There are also rigid fiberglass ducts made from rigid fiberglass boards that are particularly durable with strong insulative properties.

Installing Ductwork

It is imperative to have a professional install your ductwork. With proper installation, you will have reduced energy waste, efficient airflow, and enhanced system performance. A professional will come and inspect your home to ensure that the ductwork is the right size and matches the capacity of your HVAC system.

Professionals will properly seal all of the connections and joints to minimize the leakage of air. They do this via the use of metal or mastic tape. In unconditioned spaces, they will insulate the ducts to prevent heat gain or loss. They will also ensure the proper location of your ductwork so that it works as efficiently as possible.

Ductwork Maintenance and Cleaning

The general recommendation is to have ductwork cleaning and maintenance every three to five years. They will start by doing a visual inspection to look for loose connections, damage, or disconnected sections. This part of the process also includes looking for possible obstructions and ensuring that airflow is consistent.

You should have a professional thoroughly clean your ducts on a regular schedule. This will remove dirt, debris, and other impurities. Without proper cleaning, these impurities get pushed out through the vents and can harm your home’s indoor air quality.

They will check the insulation and sealing of your ductwork. To prevent air leaks, they will reseal any joints or connections that need it. A professional will replace any sections of insulation that have damage. They will pay particular attention to unconditioned areas of your home, such as crawl spaces or your attic. These may require additional insulation to reduce the risk of the air passing through the ducts to experience temperature changes.

Talk to a professional about changing your HVAC filters if you don’t already know how to change them on your own. You should use the manufacturer’s guidelines and the professional’s advice to ensure that you change them regularly to help ensure efficient and clean airflow.

Optimizing Ductwork Efficiency

Regular cleaning and maintenance are vital for optimal ductwork efficiency, but there are some other things you can do too. Throughout your home, you can balance the airflow. A professional can help you to properly adjust your ductwork dampers for this purpose.

Use a high-efficiency air filter for your HVAC system. This helps reduce debris and dust to keep your ductwork cleaner for longer. A professional can help you to choose the best and most efficient filter for your HVAC system.

Consider installing air dampers in your ducts. These allow you to adjust and control the flow of air to different spaces in your home. You can determine the individual needs of the different rooms in your home and optimize the airflow for each one.

Common Ductwork Problems

Homeowners should be aware of the most common ductwork problems. Recognizing these issues and understanding why they occur can help you to know when to call in a professional.

Leaky ductwork can cause conditioned air to leak out, wasting energy. This could also cause uneven cooling or heating throughout your home. If you notice that your home’s airflow is uneven or certain rooms feel drafty, your ductwork may be poorly balanced. A professional can come in and adjust your dampers. With properly balanced airflow, every room in your home will receive sufficient and even airflow and maintain a steadier temperature.

In some cases, something could be restricting the airflow. Check the air vents and make sure that there are no obvious obstructions, such as boxes, debris, or furniture. If this does not solve the issue, you should call a professional to come in and inspect your ductwork. Your ducts may have too many turns, bends, or sharp angles, which could reduce efficiency and make it harder for air to flow smoothly through your duct system.

Over time, aging or poor insulation could lead to disconnected ducts. Air will escape before it can reach your vents and throughout your home. You might notice that the temperature in your home does not match the thermostat. Age-related damage in your ducts, such as tears or punctures, could be to blame. A professional can assess the damage and determine if they can fix it or if they need to replace the damaged ductwork.

Inadequate return air is a relatively common issue. If this occurs, it could result in reduced system efficiency and pressure imbalances. Make sure that there are no obstructions by your return air vents. A professional can also look at them to ensure that they are the right size since improper sizing could also cause this problem.

Ducts in cool spaces without insulation could be susceptible to condensation if there is excessive humidity. This is a potential issue for ductwork in crawl spaces or basements. Over time, this moisture could cause duct material deterioration, mold growth, and reduced efficiency. A professional will come out and inspect all of your ductwork to see if they can make improvements to the insulation to prevent condensation problems.

HVAC Experts in Hanover

With this information, Hanover homeowners can maintain their ductwork more effectively and efficiently. Our team is here to help with any maintenance, cleaning, or repairs you need. We can also assist with all of your home’s other HVAC needs as well as your carbon monoxide detectors and indoor air quality needs.

Contact Beltway Air Conditioning and Heating in Hanover today to learn more about maintaining your home’s ductwork.

What is Auxiliary Heat?

Written by Kevin on January 18, 2024. Posted in Heating.

Heat pumps are excellent for your home during cooler weather. They are mostly efficient, and they don’t leave a carbon footprint. But the colder it gets, the longer it takes for your heat pump to work. Temperatures below 35 can slow it down and cause it to produce less heat. An auxiliary heating system is an excellent backup that helps keep your heat going strong regardless of the weather.

Is Auxiliary Heat The Same as Emergency Heat?

Nothing is worse than having your heat go out during freezing weather. When that happens, you know it’s your heat pump. It can no longer keep up with the demand, so it stops working. If you don’t have a backup heat system, your only hope is to turn on the emergency heat.
When heat from another source turns on automatically, it is known auxillary heat.

Factors that Cause Auxiliary Heat to Come on

Auxiliary heat that comes on continuously and without warning is a cause for concern. The main reason is that it’s constant use can impact your monthly expenses. Auxiliary heat can run up your electric bill by as much as 50% because it uses more electricity than any other thermostat setting.

There are several reasons why your auxiliary heat turns on. Most of these reasons are connected to drastic changes in temperature. A sudden blast of cold wind from an open door or a faulty duct system can cause the system to turn on. Other reasons include increasing the temperature by more than 5° or a sudden change in the outside weather. Whatever the reason is, it’s a problem you should be aware of.

Whenever your thermostat is unable to produce sufficient heat, your auxiliary feature will turn on. It acts as a backup source that keeps
your heat going strong. Auxiliary heat should only run for a limited amount of time. If it stays on for an extended period, the issue could be a mechanical one.

One problem may be your heat pump. If it fails to turn on, it won’t produce any heat. If your heat pump keeps going out, it could be causing a major drop in temperature, which causes the aux function to turn on right away. Sometimes, your thermostat may be to blame. It may not be communicating with your heat pump at all. Failure of your thermostat to command your heat pump to turn on could be what’s causing the problem.

A bad fan motor could be another issue impacting auxiliary heat. It’s the part of an HVAC system that keeps your heat and air circulating. The fan motor works to distribute heat throughout your home. And when it stops working, your temperatures begin to drop.

Signs That Your Auxiliary Heat is Always On

Your auxiliary heat should not run unless your house is cold. But if your system stays in that setting for an extended period, there is a problem. Below are a few red flags to look out for.

A Sudden Spike in Your Energy Bill

A sudden surge in your energy bill is a sign of a problem. Your auxiliary heat may be working too hard to keep your home warm. An HVAC system that’s the wrong size for your home could be a part of the problem.

It’s odd for your auxiliary heat to turn on when the weather is warm. There are two possible reasons this may be happening. One is that you adjusted the thermostat 5° higher or lower than average. Otherwise, you could have a bad heat pump. If that’s the case, you should call an HVAC specialist immediately.

No Response to Thermostat Changes

If you want to shut off auxiliary heating, you can begin by turning down your thermostat. Getting it down to a reasonable level should solve the problem of a running auxiliary system. It’s best to try and cut it down by at least 5°.

If turning down your thermostat doesn’t work, try turning it off. If nothing happens, there is a problem. Your auxillary heating could be running because of a bad heat pump. If you’re living in a cold area, outside temperatures could be to blame. In areas where the temperature is 35° or below, auxiliary heat can turn on automatically. If that’s the case, it’s normal. The only time you’ll have a problem is when temperatures are around 50°-60°.

Defrosting in the Heat Pump

Thanks to advances in technology, HVAC systems are getting better. Built-in sensors have evolved to the point where problems are detected early on. In some cases, you may experience issues along the way. Your auxillary heat may overreact in some cases.

Ice that accumulates around your condenser coils will cause your aux feature to go into overdrive. When your HVAC system detects this problem, it sends your system right into defrost mode. Hot air is pulled from an external source and directed towards the condenser coils, where it melts the ice. When this happens, you will receive an alert. Meanwhile, your HVAC will switch to auxiliary mode to keep your house warm.

These problems are normal for colder regions. During a harsh winter, your system will continue to defrost periodically to keep itself running at an optimal level. In most cases, it only takes a few minutes to thaw out your condenser coils. In most cases, it’s nothing to worry about. But if your defrost kicks on too often or stays on for an extended period, you should call a professional.

If Your Emergency Heat Setting is On

Most HVAC units have a manual switch that allows you to turn on your emergency heat yourself. It can be used to turn on auxiliary heat as a backup source. However, it’s going to shut your heat pump off in the process. Your energy costs will rise because you’re relying on an alternative heat source. This is especially true if your home has a duel fuel system that uses the most efficient source at a reasonable cost.
An emergency heat system should only be used during extreme temperatures. Turning it on for extra warmth can cause your monthly energy rates to rise.

Sometimes, children may play with the thermostat and turn on your emergency heat. In this case, a simple reminder about not touching the thermostat should do. An excellent preventive measure would be to lock the thermostat in a glass case.

Preventive Measures

Taking care of your unit can prevent a lot of issues with auxiliary heating. The balance between energy costs and saving money involves a little prevention. A great way to start is by keeping your entire system clean. Start by wiping down the areas of your outdoor unit on a routine basis. Check your air filters and have them replaced as needed. Clear your vents and ducts of any dirt or clutter that impact air flow.

Call the Pros

If something goes wrong with your heat pump, call a professional immediately. It could be bad wiring or poor installation. If your pump is old or worn, you may need a new one. At Beltway Air Conditioning and Heating, we’ll install a new heat pump for your MD home. We serve Colombia, Hanover, and other surrounding areas. Visit our website to learn more.

7 Common Problems That Cause Musty ACs

Written by Kevin on January 18, 2024. Posted in Cooling.

Have you experienced a smell of stale food, mildew, or mold when you turn on your AC? Regardless of how you put it, you would agree that it is not a pleasant experience to have in your home.

The smell could indicate some underlying issues in your cooling system. Don’t ignore persistent musty odors, thinking that they are normal, or go the extra mile by masking the smell with air fresheners. The surest way to fix the problem is to get to its root. Track down the issue with the help of a qualified HVAC technician, as it is not only healthy but also adds comfort to your home and reduces the cost of HVAC repairs in the long run.

If you are wondering what could make your AC smell musty, there is no one cause. A variety of issues could cause it, so let’s look at some of the common causes that would make your AC emit such an undesirable odor.

1. Dirty Evaporator Coils

During the summer, your AC functions by removing humidity and heat from your home, resulting in a cooling effect. The role of the evaporator coil in the cooling system is to evaporate the moisture after absorbing the moisture and warm air indoors. It then cycles the air to bring back dry and cool air into your home.

If the evaporator coil is left dirty or frozen, it will not function optimally. This means that your house will retain humidity and warm air. The moisture will not evaporate; hence, it will remain trapped in your cooling system. The result is the eventual development of mildew and mold.

A professional technician has special tools that are effective in deep cleaning coils and disinfecting bioslime buildup without damaging the fins. If you have this problem, you can contact Beltway Air Conditioning and Heating to check the options available for your home.

2. Dirty or Leaky Air Ducts

As a homeowner in Hanover, the value of air ducts during the cooling season cannot be overemphasized. Air ducts are responsible for the circulation of air from your cooling system to all parts of your home. However, when mildew and moldy odors are trapped in the air ducts, they are also transported in the same manner as air to all parts of your house.

When you smell a moldy smell in your indoor air, hire a duct cleaning professional who can diagnose why exactly there is dirt circulating throughout your home. Read here to learn more about the benefits of frequent duct cleaning. Some of the particulates in your air may contain pollutants, diseases, growth, and allergens that can significantly impact the health of your family.

Here are some of the odor-causing things that can build up in your air ducts:

Pollen
Dust mites and dust
Fungi and fungal spores
End-products of tobacco smoke
Rodents and insects
Fecal matter
Mold
Pet dander

Ignoring the warning signs of the musty odor can expose you and your family to respiratory health problems and can worsen allergies and asthma attacks.

3. Excess Moisture in Vents or Ducts

One potential reason why you are smelling a musty odor in your indoor air is that there is excess moisture trapped in the vents or ducts of your cooling system. When humidity levels rise, moist air easily condenses on the cold ducts and vents, as they are made of metal. This results in the pooling of water, which then contributes to the buildup of mold, bacteria, and mildew behind the ceilings and walls. The result is nauseating fumes with a musty odor.

Beltway Air Conditioning and Heating can get your efficient humidity control services to help regulate indoor air moisture to prevent condensation. An HVAC professional will guide you on how to handle saturated insulation that could cause microbial growth behind walls.

4. Clogged Drain Pipe

A drain pipe helps drain water to the outdoor unit once it is collected in the drip pan. By its nature, a drain pipe operates in a moist and dark environment, which is a high-risk area for mold growth. The pipe is also vulnerable to clogging, which also results in a musty odor.

When dirt, debris, and algae clog the line, water backs up and leaks somewhere inside the pipes instead. This stagnant water breeds mold and bacteria, creating an unpleasant, decaying smell.

A professional HVAC technician has specialized tools that they use to dislodge the sticky mess. During installation, ensure that the drain line is capped outside to prevent re-entering more dirt.

5. Leaky Condensate Pan

If you notice that there is a puddle under your AC, it could mean that there is a crack or corrosion in the internal condensate pan. This is a common occurrence, especially for old cooling systems that have gone through constant condensation cycles. Mold grows as a result of water spilling through the pan to collect beneath your system and stagnate afterward, similarly to what may happen within your ducts if moisture is left unchecked.

6. Overfull Drip Pan

Your AC does not only help keep your home cool but also provides dry air by extracting moisture. The extracted moisture is collected in a drip pan.

In some instances, your drip pan could be damaged or corroded, which means that it cannot function as expected to extract and collect moisture from the air. Without anywhere to go, the moisture may build up in your cooling system. This will create an environment conducive to mold growth, resulting in a musty smell.

7. Oversized AC

Your home could smell musty because your air conditioner is too big for the space installed. This means that the AC will cool the air faster than it is intended to, which means it doesn’t dehumidify the air as well as the manufacturers specify. Hence, the remaining humid air will just circulate in your home. In such a scenario, without adequate ventilation to maintain the humidity levels, mildew and mold can grow, giving out an undesirable stench.

An oversized AC may increase your electricity bills while at the same time leaving your home smelling clammy and uncomfortable. We recommend talking to an HVAC technician to walk you through the journey of selecting the right size of AC according to your needs.

Breathe Fresh Air Today

Catching problems early can help you prevent simple issues from escalating into mold hazards or even causing total failure of your HVAC system. Don’t choose the wrong route by masking strange smells from your AC with scents and sprays. Instead, talk to Beltway Air Conditioning and Heating.

We have licensed HVAC technicians who will inspect your system and get to the root of the problem. We will get the musty smell out of your way as soon as we can, making sure you enjoy the comfort of an efficient HVAC system.

We offer heating and cooling services such as repair, installation, maintenance, oil-to-gas furnace conversion, and heat pumps in Hannover and the surrounding areas. We also serve to cool your house through AC repair, installation, maintenance, and mini-splitting. Other services we offer include indoor air quality, duct cleaning, and ductwork. Call us at Beltway Air Conditioning and Heating today!