Your AC Might Be Blowing Hot Air and How to Fix It

There’s nothing more frustrating than an air conditioning unit that’s blowing hot air instead of cool, refreshing air. If this happens, it could be caused by several potential issues, each requiring a different solution. The first thing to check is the thermostat settings. If the thermostat is set incorrectly or is malfunctioning, it can cause the AC to blow warm air. Make sure the thermostat is set to “cool” and that the temperature is set low enough to trigger the cooling function. If the thermostat appears faulty, it may need recalibration or replacement.

Another common reason for an AC blowing hot air is low refrigerant levels. Refrigerant is the substance that absorbs heat from the air inside your home and cools it down. If your AC is low on refrigerant, it cannot properly cool the air, and your system may blow warm air instead. Low refrigerant levels often indicate a leak in the system, which should be fixed by a professional technician. They will also need to recharge the refrigerant once the leak is repaired.

Clogged or dirty air filters can also cause your AC to blow hot air. When air filters are clogged, they restrict airflow, making it difficult for the system to cool the air. If you haven’t replaced your air filters recently, this may be the cause. Simply replacing the filter with a clean one can improve airflow and restore proper cooling.

Another possible issue is a broken compressor. The compressor is responsible for circulating refrigerant throughout the system. If it’s malfunctioning, your AC can’t cool the air, leading to hot air blowing from the vents. If you suspect the compressor is the problem, it’s important to call a technician immediately, as compressor issues can be costly to repair.

Lastly, ensure the system’s coils are clean. Dirty evaporator coils can prevent the AC from absorbing heat properly, while dirty condenser coils can prevent heat from being expelled. Cleaning both sets of coils can help restore your AC’s cooling efficiency.

By troubleshooting these potential issues and scheduling a professional inspection, you can get your AC back to blowing cold air quickly.