Aug 30 2015

air conditioner blowing hot air

Your air conditioner keeps you cool through the summer months by circulating cold air through the ductwork of your home. If your A/C is running but hot air is coming from the vents, you have a problem in your HVAC equipment that won't help your home comfort. Here's what you should investigate if you've got an air conditioner blowing hot air.

Check the Thermostat Settings

Thermostats can be bumped or accidentally set incorrectly. Look at the temperature first to make sure it's set appropriately, then check the fan to see if it's set to "on," causing it to blow air even when the air isn't being cooled. If the thermostat has a manual switch between heating and cooling, check that it's switched to cooling.

Is Power Getting to the Outdoor Unit?

If the circuit breaker has tripped, the indoor unit may be running without the outdoor unit, which won't cool your home. Electrical connections may also have come loose or been damaged. If there's damage, contact an HVAC professional.

Check the Air Filter

A clogged air filter can prevent air from being drawn into the evaporator to be cooled. The filter should be changed once a month, and you shouldn't use an air filter with a higher MERV rating than your system can handle.

Examine the Refrigerant Line

If the lines are bent, damaged or leaking, call your local HVAC specialists right away; refrigerant line repair isn't a DIY task. The refrigerant line carries heat out of your home, and heat transfer takes place through phase changes in the refrigerant itself. These changes are dependent on the pressure inside the line, which means that a leak can quickly cause your air conditioner to fail.

If you have an air conditioner blowing hot air in your home, or you want to learn more about A/C troubleshooting, check out Maxx A/C's maintenance resources or give us a call today at 281-409-3890!

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