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Why Is My AC Blowing Warm Air?

Troubleshooting your faulty air conditioner.

There’s no substitute for the crisp, refreshing cool air that flows out of your air conditioning system. As the summertime arrives in Fairfax, Arlington, Centreville, Reston, and throughout Northern VA, you don’t want to find yourself without a working air conditioner. When our clients call for air conditioner repair, we frequently find them asking why their air conditioner is blowing warm air.

This is probably the last thing you want to have happen. After all, you are paying to stay cool. That’s what makes professional repair so important. Without the technical expertise and knowledge of a Northern VA HVAC technician, your AC will simply not get the attention it deserves. If your AC is blowing warm air, call us today at 703-291-1926 for repair service.

Warm Air Coming From Air Conditioner

First, and simplest fix is to make sure your thermostat is set to the right temperature. This may seem like a no-brainer, but we’ve seen it happen before. Make sure your thermostat isn’t set to “heat.” Other problems with your AC unit may include:

Low refrigerant – Refrigerant is the chemical designed to produce radical temperature fluctuations under different pressurized conditions. If your AC unit has low refrigerant levels, it may not function efficiently, and it may be blowing warm air. Low refrigerant is typically caused by a leak somewhere in the coils–because of either a puncture or corrosion. The refrigerant leak will need to be repaired before the system can be recharged.

Dirty Condenser Coils – An AC unit’s condenser coils reside in the outdoor unit with the compressor. Their purpose is to dissipate the thermal energy from the indoors. The compressor heats up and pressurizes the gaseous refrigerant as it comes from the evaporator and then sends it to the condenser. By raising the temperature above even the hottest outdoor air, the compressor allows the condenser coils to let the heat flow into the air by means of an exhaust fan. This process cannot work well if dirt and debris have accumulated on the coils. This may cause the unit to blow warm air.

Restriction to airflow – When there is a restriction to airflow, from debris or a dirty air filter, your condenser can freeze up. When it freezes up your AC unit does not run properly.

AC Repair in Northern Virginia

If your AC unit is blowing warm air, call John Nugent & Sons today for AC repair service in Northern VA. We’ve been a family-owned and operated company since 1975, and we employ only the most skilled HVAC technicians who can help get your unit running back to full capacity. Contact us online to schedule your next appointment.

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10 TIME Super Service Award Winner!

"John Nugent & Sons, I believe, is a model for a company with excellent management, superior service through cooperative scheduling and excellent service representatives."

J.A. – Leesburg, VA.

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