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Why Is My AC Blowing Hot Air?


After spending a hot summer day outside, one of the worst feelings is walking into your home and feeling a rush of warm air greet you. Finding an HVAC technician you trust to repair your AC quickly is a quest that no homeowner asks for.

Our experts have two pieces of good news for you: First, there are usually a limited number of reasons that an AC blows hot air, so your HVAC professional should discover the issue and repair it quickly.

Second, the reasons why an AC blows hot air typically can be prevented by completing a few routine maintenance tasks that make it unlikely to happen again.

Here are a few common reasons why ACs blow hot air:

Low Refrigerant Levels

The refrigerant levels could be low in your AC unit, indicating a refrigerant leak. Refrigerant lines within your AC are closed, so no refrigerant should escape your unit if it’s functioning normally. You might be able to determine the location of your AC’s refrigerant leak if you see frost concentrated on an external cable. A certified HVAC technician will need to repair the leak and refill the refrigerant.

Dirty Evaporator Coils

When the evaporator coils in your AC unit are dirty, condensation will freeze on the dirt. Evaporator coils are meant to facilitate the flow of warm air that cools and produces cooler air. Frost building up on dirty evaporator coils can cause an AC to stop producing cool air. Experienced technicians can take a look at your coils and clean them so that your AC returns to normal operation.

Thermostat Settings Are Off

If your AC or thermostat is new or recently rewired, there may be a problem with your thermostat settings. Thermostat setting issues do not typically occur suddenly with no apparent cause. A certified technician will need to take a look at the wiring and make the necessary adjustments so that your AC stops blowing hot air.

Clogged Air Filters

Clogged air filters in an AC restrict airflow and eventually cause the unit to become overworked. An overworked AC might start blowing warm air or stop working altogether. Air filters trap particles and keep the air in your home clean and safe. All homeowners should aim to change their air filters every 30 to 90 days.

Outdoor Unit Is Losing Power

An AC’s outdoor unit is where the condenser is housed, which blows warm air over the evaporator coils to produce cool air. If the condenser loses power due to a loose plug or other obstructions, warm air will blow into your home. Routine AC tune-ups completed by an HVAC professional are designed to prevent this loss of power by keeping a watch on the health of the outdoor unit as it’s exposed to extreme weather, critter infestations, and obstructions all year round.

Choose Iceberg for AC Repair & Tune-Ups in Central Florida

For reliable AC repairs and tune-ups, call Iceberg Cooling. Our certified AC technicians are available 24/7 for emergency AC repairs so that you and your family stay comfortable all season long. We also offer routine AC tune-ups to reduce your chances of experiencing surprise AC outages. During an AC tune-up appointment, one of our experienced technicians will check refrigerant lines, clean evaporator coils, test electrical components, and more. This will extend the service life of your AC and lower your cooling costs over time.

Schedule AC repair or tune-up service online, or call us at (863) 223-1849.

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    “ They are fast, reliable, and courteous! They have been out to our house twice to fix the same problem for two different reasons and both times were on time and cared about the well-being of our family. They are also very knowledgeable and also advised us on how to keep our A/C maintained during stor...”

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