When summer heat and humidity make you feel like a wet dishrag, you don’t want warm air blowing from the AC. Depending on the reason why it’s happening, you might or might not need to call an air conditioner repair service. Here are a few factors that may be bringing the heat instead of the cool breezes.

Why Warm Air Is Coming From Your Air Conditioner

1. Thermostat Controls Need Adjusting

The thermostat regulates the temperature, and if the controls are not properly set for air conditioning, you feel warm air blowing. Before calling an air conditioner repair company, check the thermostat to make sure it is set to “cool,” not “heat.”

The fan should be on “auto” with the temperature set at a level below the actual indoor temperature. A range between 72° F and 78° F keeps most people comfortable.

2. Air Conditioner Filter Is Clogged

air-conditioner-repairSolving the warm air problem may be as simple as changing the air conditioner filter. The filter’s job is to capture the debris and dust particles in the warm air that flows over the unit’s evaporator and condenser coils.

When the filter is clean, the evaporator coil removes the warmth from the indoor flowing air, and the fan blows the cool air on you. However, when those materials clog the filter, the coil can’t do its job, so the fan blows warm rather than cold air.   

3. Evaporator Coil Is Dirty

If you change the air filter and still get warm air, the problem might be that the evaporator coil itself is dirty. To ensure the evaporator coil is cleaned properly and safely, make an appointment with a professional HVAC technician for air conditioner repair assistance.


When you feel warm breezes from your AC, and a simple adjustment doesn’t fix it, get help from Stewart Air Conditioning & Heating LLC. Their team of highly trained technicians offers a wide range of HVAC maintenance and air conditioner repair services, including for heat pumps. These professionals offer almost 45 years of experience to Lexington, KY, residents, providing high-quality solutions with competitive prices. Call (859) 252-4945 to schedule an appointment or visit them online to learn more about how they can serve you.