When the summer heat is unbearable, the last thing you want is for your air conditioner to stop cooling. If your air conditioner is running but not keeping your home cool, there could be several underlying issues. Some problems require a simple fix, while others may need professional repair. Ambient Heating & Air Conditioning would like to go over common reasons why your air conditioner is not cooling and what you can do to fix them.
Dirty or Clogged Air Filter
A dirty air filter blocks airflow, reducing your air conditioner’s ability to cool your home efficiently. It can also cause ice buildup on the evaporator coil, further worsening the problem. Check your air filter and replace it if it’s dirty every 1 to 3 months. If ice has formed on the coils, turn off the air conditioner and let it thaw before replacing the filter.
Refrigerant Leak
Refrigerant is essential for absorbing heat and cooling your home. If there’s a leak, your air conditioner won’t be able to cool effectively. Call a professional HVAC technician to inspect and repair the leak. Refrigerant handling requires specialized equipment and should never be done by an unlicensed person.
Dirty Evaporator or Condenser Coils
Your air conditioner’s evaporator coil absorbs heat, and the condenser coil releases it. If these coils are dirty, your air conditioner struggles to cool efficiently. Clean or replace the air filter to prevent further dirt buildup. Use a coil cleaner spray to remove debris if you have access to the evaporator coil. Hose down the outdoor condenser unit to remove dust and leaves. If the coils are heavily coated in grime, a professional deep cleaning is recommended.
Blocked or Leaky Ductwork
If your ducts are leaking or clogged, the cool air may not be reaching your living spaces effectively. Inspect ducts for visible leaks or damage. Ensure all vents are open and unobstructed by furniture. If you suspect a duct issue, schedule an HVAC inspection.
Frozen Evaporator Coil
If the evaporator coil freezes over, it can’t absorb heat, making your air conditioner blow warm air. This issue is often caused by low refrigerant, dirty coils, or restricted airflow. Turn off the air conditioner and let it thaw completely. Check and replace the air filter if dirty. If the issue continues, call an HVAC technician to check for refrigerant leaks or airflow restrictions.
Faulty Compressor
The compressor is the heart of your air conditioner system, responsible for circulating refrigerant. If it fails, your air conditioner won’t cool your home. A faulty compressor usually requires professional repair or replacement. If your unit is old, it may be more cost-effective to replace the entire system.
Tripped Circuit Breaker
If your outdoor unit loses power while the indoor fan is still running, you might experience warm air blowing from the vents. Check your electrical panel and reset the breaker if it has tripped.
When to Call a Professional AC Contractor
While some air conditioner issues can be fixed with basic troubleshooting, others require the expertise of an HVAC technician. Call a professional if:
• Your air conditioner is still not cooling after checking the thermostat and filter.
• You hear strange noises like buzzing, hissing, or rattling.
• You notice ice buildup on refrigerant lines or coils.
• The air conditioner short cycles turns on and off rapidly.
• There are electrical issues like tripped breakers or a non-functioning compressor.
Central Heating Furnace & Boiler Maintenance, Repairs, Replacement, Emergency Repairs & More in Springfield, Granby, Holyoke, South Hadley, Monson, Chicopee & Agawam, Massachusetts
If your air conditioner isn’t cooling, contact Ambient Heating & Air Conditioning and schedule an HVAC inspection and repair today!
