Summer is here, and you rely on your air conditioning system to keep your home cool and comfortable. Nothing can be more frustrating than when your AC unit fails to deliver cold air. Sometimes, the AC blowing warm air issue could be as simple as a dirty filter or thermostat settings. However, other times, it could be a sign of much bigger problems. Here are some reasons why your AC may not be cooling.

1. Faulty Thermostat

The thermostat is the brain behind your AC system. If it's not working correctly, it can interfere with the cooling performance. The thermostat's primary function is to regulate the temperature in your home. It does this by sending signals to the AC system to turn on when the temperature rises above the desired level and turn off when it reaches that level. If your thermostat is not calibrated correctly, it can cause your AC to turn on and off frequently, resulting in poor cooling and higher energy bills. Check your thermostat settings and recalibrate them if necessary.

2. Refrigerant Leak

Refrigerant is the coolant that cools the air in your AC system. When refrigerant levels are low, your AC won't cool your home effectively. The refrigerant in your AC unit is supposed to last for the entire life of the system. However, leaks can occur in the coils, resulting in low refrigerant levels. If you suspect a refrigerant leak, call a licensed HVAC technician to fix it. Attempting to fix a refrigerant leak yourself can be harmful, as refrigerants can cause harm to the environment and human health.

3. Dirty Evaporator Coils

The evaporator coils absorb heat from the air in your home, making it cooler. Over time, dust and dirt can accumulate on the coils, reducing their efficiency. Dirty coils can cause your AC to struggle to cool the air. Sometimes, this is accompanied by an odd smell. To fix this problem, you need to clean the evaporator coils. However, cleaning coils can be tricky, so it's best to leave the job to a professional.

4. Broken Compressor

The compressor is the heart of your AC system. It circulates refrigerant through the coils to cool the air. If your compressor isn't working, your AC won't cool. Signs of a faulty compressor include weird noises, warm air blowing from the unit, and higher energy bills. Replacing a compressor can be costly, so it's best to call a professional to diagnose and repair the problem.

When your AC unit is not cooling, it's usually due to one of these issues. Regular maintenance of your AC system can help you avoid most of these issues. Hire an HVAC technician to inspect your AC system at least once a year. This can help keep your system in top shape, ensure optimal performance, and extend its lifespan.

Contact a local AC repair service to learn more.