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Why Is My Air Conditioner Blowing Warm Air?

One of the most frequent questions we receive is, “Why is my air conditioner blowing warm air?” Air conditioners are supposed to blow cold air. If your AC system has started blowing warm air, there are a few components you can check yourself before calling in a professional like National Heating & Air Conditioning. Believe us, we know how inconvenient it can be to have an air conditioner that is on the fritz—and we never want you to feel inconvenienced in your own Cincinnati home!

If your system isn’t working like it used to, you need to schedule air conditioner repair. Contact us online or call us at (513) 621-4620 to schedule an appointment!

Reasons Why Your AC Might be Malfunctioning

Tired of dealing with an air conditioner that is constantly blowing warm air? Be sure to check for the following reasons why your system might be operating incorrectly.

  • Fan Setting – The air conditioner has both an on and auto setting. If you have it set on “on”, the fan will run continuously, even when the motor is not cooling air. This means that any air going through your system remains warm. When the unit is set on “auto”, the fan only rotates when cooling is needed.
  • Coolant Leak – The coolant in your air conditioner is meant to absorb heat. If there is a leak, the coolant isn’t there to do its job and the warm air conditions through the air conditioner and out the vents. Coolant leaks often come with a “hissing” sound that alerts you to a possible problem.
  • Dirty Filter – This is often the first thing that needs checked. When the air filter becomes full, it prevents the warm air from being recycled. This means that the coolant can’t get to the air and it is returned as warm as it entered. The filter should be cleaned or replaced on a regular basis.
  • Blocked Unit – Air conditioning systems consist of both indoor and outdoor parts. When the outside unit becomes clogged with leaves or weeds, it doesn’t allow proper cooling. Make sure your outside unit is free of any debris and the vents are open.
  • Electrical Issue – Each of the two parts of the air conditioning system has a power source. If the outside unit loses power, it stops cooling. The inside unit doesn’t know what is happening and keeps blowing out air, which is still warm.
  • Frozen Evaporator Coil – Yes, air conditioners can freeze. The evaporator coil is the most likely to become frozen. This happens when the unit is run at its lowest temperatures for long periods of time. The continuous cold causes the condensation to freeze instead of evaporate. At times, the fan will also freeze, but if it doesn’t, warm air will blow because the frozen coil can’t cool the air. If this turns out to be the case, you might need a fan coil replacement to rectify the problem.
  • Broken Wires – All it takes is one internal wire being broken and things can go wrong in the way your air conditioner works. Sometimes it only takes someone bumping into the unit to cause a disconnected wire. This is especially likely if your air conditioner is an older one that time has weakened.
  • Kids and Pets – Yes, those little ones running around your home can be the culprits. Buttons can be interesting and kids are curious. More than one has turned the air conditioner setting from cool to heat and walked away, promptly forgetting about it.

Still experiencing the problem after going through this list? Then it’s time to call in a professional.

Air Conditioner Repair in Cincinnati, Ohio

We understand the importance of a comfortable home, particularly during the hottest and coldest months of the year. We take a whole home approach to every project, including air conditioning repair. This means that we look at every aspect of your home as part of a larger system, while your air conditioning unit may be what is breaking down, it could be your insulation that is causing the problem. By looking at the home as a system we can identify and fix the main problem.

If you have any trouble with your HVAC systems, be sure to call our team of experts at (513) 621-4620 to discuss any installation or repair questions you may have.

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