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Why Is My AC Blowing Hot Air?

Serving Families Throughout Clackamas
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In this article, we break down some of the most common causes of one of the most irritating air conditioning problems: hot air. If your system is blowing hot air, it could be caused by a number of issues. Continue reading to see if you can find out why your AC is blowing hot air.

Clogged Air Filters

HVAC air filters are designed to trap air contaminants such as dust, dirt, dander, and more. Over time, these contaminants build up within your air filter and can restrict the airflow. This can put serious strain on your AC system as it has to work harder to force air through the clogged air filter.

Leaking Ductwork

Your ductwork is responsible for distributing cooled air throughout your home. It often runs through your attic before approaching the air vents in your home. When ductwork becomes damaged (i.e., joints become loose or cracks or gaps form), hot air from inside your attic can seep into your ductwork and be distributed into your home.

Refrigerant Leaks

Refrigerant is the substance used to cool the air in your home. In a properly functioning air conditioner, refrigerant is supposed to remain at the same level; however, your system can become damaged, forcing the refrigerant to leak from the system. When refrigerant levels are low due to a leak, your system is no longer able to effectively cool air.

Incorrectly Set Thermostat

We know it sounds silly, but this issue is more common than you might realize. Check to be sure your thermostat is set to “cool” and your fan is set to “auto.” When the fan is set to “on” it will run continuously, even when the AC is not on. That means that the fan will bring hot air from outside into your home.

Dirty Evaporator Coils

If your evaporator coils become coated in dust and dirt, their ability to blow air will be inhibited.

Outside Unit Is Off

Blown fuses or tripped circuit breakers can force the outside AC unit to shut down. If your AC is blowing warm air into your home, it might be worth taking a look at your electrical panel to see if the circuit breaker needs to be flipped back on.

Faulty Compressors

The compressor is designed to compress the refrigerant in your system to ensure it is effective in its duty of cooling air. When the compressor malfunctions, refrigerant cannot thoroughly cool the air, which means warm air is sent into the home.

Call A-TEMP Heating, Cooling & Electrical Today!

Dealing with AC issues? A-TEMP Heating, Cooling & Electrical has a solution. Our technicians are skilled in troubleshooting all types of AC problems, including hot air. During a thorough inspection, we will locate the exact cause of the problem and implement the best fix. Backed by 50+ years of service excellence, our team has the tools, knowledge, and technology to get the job done right the first time around. Whether your system needs to be tuned up or repaired, you can count on us for a swift and lasting solution.

Our complete set of AC services includes:

When your AC starts blowing hot air, turn to A-TEMP Heating, Cooling & Electrical.

Call (503) 694-3396 or contact us online to schedule a service. We look forward to restoring comfort to your home!