After a muggy day of work or play in Dallas, there’s nothing more frustrating than coming home to an air conditioner blowing warm air. At MHC Air Services, a family-owned business serving Dallas, TX, since 1976, we prioritize your comfort by providing AC repair service 24/7, top-tier HVAC maintenance plans, and high-efficiency replacement and installation. Know that our team of certified professionals will supply expert solutions when addressing the issue of your AC unit blowing warm air and prompt service to create the cool oasis you deserve.

Top Reasons Air Conditioners Blow Hot Air

When the steamy season amps up in Dallas, you want to crank the air. But with that first blast, you might be met with warm air. If, after a few minutes, your house continues feeling warmer than usual and you’re wondering, “Why is my AC blowing hot air?” some simple solutions might do the trick.

However, if you need a quick fix, trust MHC Air Services to get your AC unit up and running. Servicing the Northern Texas area for over 45 years, our personable technicians are available 24 hours a day, seven days a week, with options ranging from routine maintenance to replacing air conditioning units blowing hot air.

No matter what, don’t panic. Let’s examine some of the reasons why your AC is blowing hot air.

Your Thermostat Settings Could Be Wrong

A smart thermometer is set to 72 degreesFirst, make sure your thermostat is set to cool. Especially if you’ve recently updated your thermostat or there was a quick transition between seasons, your thermostat could be set to an inappropriate setting. However, if your thermostat is new, the unit might be faulty, and you’ll need to replace it.

Another issue with new thermostats is incorrectly installed wiring. Connections could be defective or malfunctioning.

It May Be Time to Replace or Clean Your Air Filter

There’s no doubt that routine maintenance is crucial to the life of your air conditioner. If you’ve removed an air filter in your AC unit before, you’ve seen the dust and debris left behind. Air filters must be replaced every few months to ensure these particles do not end up in your HVAC system, causing your air conditioner to blow warm air. If you’re tired of worrying about all the maintenance associated with your AC, our VIP Maintenance program might be for you.

It May Be Low on Refrigerant

Have you noticed a recent increase in energy bills or heard a hissing sound coming from your AC unit? An air conditioner blowing warm air causes such issues when there is a leak in your HVAC system, and the refrigerant becomes low. Because AC units are closed systems and use coolant to transfer heat, you should never be low on coolant unless there is a leak. If the leak is small, try fixing it in the short term with appropriate sealant or tape. A refrigerant leak, however, can become a more expensive problem the longer you wait. It is best to check in with MHC Air Services today.

The Evaporator Coil May Be Frozen

Along with your air conditioner blowing warm air, you might notice more moisture in your home or ice forming on indoor or outdoor air conditioning coils. If so, check your air filter to ensure it’s debris-free and airflow is not hindered. Another possible quick fix is to turn your thermostat off, except for the fan. This allows air to circulate and defrost the frozen coil. Note that this may take a few hours. In this case, patience is a virtue.

split system

If DIY solutions fail, our skilled technicians at MHC Air Services will check your HVAC system for clogged drains, damaged ducts, and refrigerant leaks, all of which can affect the function of your evaporator coil. Having the evaporator coil professionally cleaned will often restore the cool home environment you need to escape the Dallas heat.

If your AC is blowing hot air, don’t sweat it! Book an appointment with MHC Air Services today!