An air conditioning unit that blows warm air can be frustrating, especially during hot weather. There are a few possibilities as to why an AC unit is blowing warm air, and to troubleshoot the issue and take steps to fix it comes from understanding them. With this in mind, we at Ambient Heating & Air Conditioning would like to discuss these common possibilities as to why your air conditioner is blowing warm air.
Change Dirty Air Filter
A dirty air filter can cause the AC unit to blow warm air. When the air filter becomes clogged with dust and debris, it restricts airflow, making it difficult for the unit to cool the air passing over the evaporator coils. This can cause the air coming out of the unit to feel warmer than expected. To fix and avoid this issue, you should clean or replace your air filter regularly.
Recharge Low Refrigerant Level
Refrigerant is the substance that cools the air passing over the evaporator coils in your AC unit. If the refrigerant levels are too low, it can cause the unit to blow warm air. Low refrigerant levels can be caused by a leak in the system, and it’s important to have a professional HVAC technician locate and repair any leaks to prevent this issue from occurring.
Clean Dirty Evaporator Coils
The evaporator coils in your AC unit can become coated with dirt and debris over time, reducing their ability to transfer heat effectively. When the evaporator coils are dirty, it can cause the air coming out of the unit to feel warmer than expected. You should have a professional HVAC technician clean your evaporator coils regularly to prevent and/or solve this problem.
Repair Faulty AC Compressor
The compressor is responsible for compressing the refrigerant and pushing it through the AC unit’s system to cool the air. If the compressor is faulty, it can cause the AC unit to blow warm air. This is a more complex issue that requires a professional HVAC technician to diagnose and repair.
Service Malfunctioning Thermostat
If the thermostat in your AC unit is not functioning correctly, it can cause the unit to blow warm air. This is because the thermostat is responsible for regulating the temperature of the unit and telling it when to turn on and off. If it’s not working correctly, it can cause the unit to run longer than necessary, leading to excessive heating and eventual warm air blowing from the unit.
Fix Frozen Evaporator Coils
If the evaporator coils in your AC unit become too cold, they can freeze and block the flow of air passing over them. This can cause warm air to blow from the unit. Frozen evaporator coils can be caused by low refrigerant levels, a dirty air filter, or other issues. To solve the problem, you should turn off the AC unit and allow the coils to thaw before calling a professional HVAC technician to diagnose and fix the root cause of the problem.
Central Air Conditioner Maintenance, Repairs, Replacement, Emergency Repairs & More in Springfield, Granby, Holyoke, South Hadley, Monson, Chicopee & Agawam, Massachusetts
Basically, a variety of issues can cause an AC unit to blow warm air, including a dirty air filter, low refrigerant levels, dirty evaporator coils, a faulty compressor, a faulty thermostat, and frozen evaporator coils. To prevent these issues from occurring, it’s important to have regular maintenance performed by a professional HVAC technician and to troubleshoot any issues as soon as they arise. By taking these steps, you can keep your AC unit running smoothly and ensure that it’s able to cool your home or workplace effectively. For air conditioning repairs, maintenance, installation, and replacement services in Hampshire and Hamden County, Massachusetts, call Ambient Heating & Air Conditioning and let us assist you.