Your air conditioner is meant to keep your home cool, so when it fails to do so, it can be incredibly frustrating. During the hot summer months, you rely on your AC for comfort. There are several reasons why your air conditioner might be running but not cooling. It could be a problem with the thermostat, the compressor, or the evaporator coils. Dust and debris buildup could also be preventing it from functioning properly. If your air conditioner isn’t cooling as it should, consider seeking help from a professional HVAC technician from ABA Heating & Cooling. A faulty AC can waste energy and lead to uncomfortable indoor temperatures.
Here’s a closer look at some common reasons why your AC might not be cooling and what can be done to fix it:
Thermostat Issues
One of the first things to check if your air conditioner is running but not cooling is the thermostat. Ensure it is on and set to ‘cool.’ Try setting it a few degrees lower than the current temperature to see if it starts cooling. Sometimes, the thermostat might not be calibrated correctly, leading to a lack of cool air. Wiring issues could also be a problem. If you suspect a faulty thermostat, contact a professional. Also, make sure your windows and doors are closed, and your vents are open and unobstructed.
Frozen Evaporator Coil
A common reason for an air conditioner to run but not cool is frozen evaporator coils. When the coils freeze, air can’t flow properly, preventing the AC from cooling effectively and potentially making hissing noises. This can result from dirty air filters, a malfunctioning fan, or a refrigerant leak. Call the experts to handle frozen coils. If there are leaks, a technician can replace the coils.
Clogged Air Filter
A dirty or clogged air filter can reduce airflow and prevent the AC from functioning efficiently. Even if the air filter is in your furnace’s blower, it can still affect cooling. Check your air filter monthly and clean or replace it at least every three months. If you have pets or allergies, change it more frequently. We offer air conditioning maintenance plans to help you better stay on top of air conditioning maintenance in your home.
Tripped Breaker
If your air conditioner isn’t running at all, check your home’s circuit breaker. A tripped breaker can cut power to your AC unit, preventing it from cooling. Locate the AC breakers in your breaker panel, flip the switches off and on, and see if that fixes the problem. If it doesn’t, there might be another issue at play.
Old Air Conditioner
Older air conditioners, especially those over 15 years old, are less efficient and may struggle to cool your home. If your AC is outdated and hasn’t been updated or replaced, consider upgrading to a new, energy-efficient model.
Dirty Outdoor Unit
Your AC’s outdoor condenser unit can become dirty over time, affecting its performance. Dirt and debris can block airflow and hinder cooling. Avoid DIY repairs on your outdoor unit; instead, keep the area around it clean and clear of bushes and trees. You can also carefully clean the condenser fins and wash the condenser regularly with soap and water. Cover the condenser securely during the off-season to prevent debris buildup.
Refrigerant Leak
A refrigerant leak can cause your AC to run without cooling effectively. Refrigerant absorbs heat from your indoor air and releases it outside. A lack of refrigerant reduces the AC’s ability to transfer heat. Signs of a refrigerant leak include ice buildup, decreased cooling, and hissing sounds. Contact us immediately if you suspect a refrigerant leak. Fixing it requires special equipment and training.
Incorrectly Sized or Installed Equipment
If your air conditioner is too small or too large for your home, it won’t cool efficiently. Proper sizing and installation are crucial for effective cooling. Have a professional HVAC technician size and install your AC unit correctly.
Mechanical Problems
Mechanical issues, such as a misaligned fan or compressor issues, can prevent your AC from cooling effectively. Annual AC maintenance can help reduce the risk of mechanical problems. If you suspect a mechanical issue, contact us for immediate repairs. We can diagnose and fix the problem to get your system running smoothly.
Let ABA Heating & Cooling Handle Your Air Conditioning Problems
If your air conditioner is running but not cooling, it could be due to various issues, including thermostat problems, frozen coils, or clogged filters. Whatever the problem may be, our team at ABA Heating & Cooling can help.
Call us now at 512-687-1463. Our knowledgeable and experienced technicians can quickly diagnose the issue and provide an effective solution to restore your comfort.
