Air conditioner is blowing warm air

7 Possible Reasons Your Air Conditioner Is Blowing Warm Air

If you’ve lived in Auburn or East Alabama for even just a couple years, you know the summer brings some serious heat. Without an air conditioner keeping your home cool, you’ll easily experience uncomfortable temperatures and possibly unlivable conditions. So, when your air conditioner starts blowing warm air, you might begin to panic, but don’t worry! The professionals at Spencer Heating & Air are here to fix your system and help you understand the possible root causes of why your air conditioner is blowing warm air. 

1. Thermostat

One reason your air conditioner could be blowing warm may be an incorrect thermostat setting. Although your system may be set to 72 degrees, if the thermostat was never switched to “cool” as the weather changed, you could be inadvertently heating your home. Another common thermostat mistake, especially with programmable thermostats, is the temperature may be set higher than you desire. Simply change the temperature or re-schedule your thermostat to your routine.

2. Air Filter

Remembering to change your air filters can be tough until you begin to notice the effects. An air conditioning system that isn’t cooling could be struggling to move air through a dirty air filter. If you can’t remember when your air filter was last changed, it’s likely time for a new one. Try changing your filter every 1-3 months for optimal air flow, efficiency, and temperature control. 

3. Refrigerant Leak

If your air conditioner is blowing warm air, the system may be low on refrigerant. When AC systems are working properly, they should never need refrigerant added, so if it does need refrigerant, there is a leak somewhere in your system. Listen for a hissing sound coming from your system, or watch for rises in energy consumption and heat levels. All these things could signify a refrigerant leak. Call in the professionals at Spencer Heating & Air to determine the location of the refrigerant leak and to fix the issue

4. Electricity Connection

An interrupted power connection between the indoor and outdoor system could result in warm air blowing from your air conditioner. In order to cool your home, all components of the cooling system must have power. To check the power yourself, first make sure the system is turned on. This is an issue we see often that homeowners never expect. Next, check the breaker box for any tripped breakers and reset them if needed. If your home has a fuse box, be sure to check for blown fuses, as this can definitely be a factor in your air conditioner blowing warm air during the hot summer heat in Auburn.

5. Duct Leaks

A leak in your air ducts could cause warm air to blow through your air conditioning system. The professionals at Spencer Heating & Air will check your air ducts for any damage or blockages that could cause warm air to enter into your home. If there is a leak, our technicians are trained to repair or replace the parts in need. Don’t try and do this yourself as ductwork can be easily damaged, causing more problems than just warm air in your home.

6. Evaporator Coils

The purpose of evaporator coils is to remove heat from the outside air as it enters your comfort system. If the air has too much moisture, the cooling process could cause condensation to freeze when it comes in contact with the evaporator coils. The technicians at Spencer Heating & Air can determine If your evaporator coils are frozen and will shut off the power to the interior cooling system for 12-24 hours depending on how much ice there is. We can determine if there is an underlying issue causing the freeze and we’ll fix it. Once the system is fully thawed, it can be turned on again.

7. Condenser Coils

If the indoor components are in working order, the outdoor unit may be the issue. The condenser’s job is to eject heat from your home through coils. Condenser coils can quickly become dirty due to their location outside of your home. To fix dirty condenser coils, start by removing large debris from around the outdoor unit. Then, use a hose 

 to spray between the coils outside the unit. If you’re not comfortable doing this, or if this doesn’t fix the problem, contact Spencer Heating & Air

What’s Next?

Warm air blowing from your air conditioning system can be a rude awakening on a hot summer day. If these tips didn’t solve your cooling problem, Spencer Heating & Air will. Visit our website at for all your AC repair needs today. 

We care about the comfort of you and your family. Call 334-887-9020 today to learn how we can keep your home comfortable, and be sure to check us out on Facebook and Instagram!