Why is my air conditioner blowing hot air?

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Why is my air conditioner blowing hot air?

My air conditioner is blowing hot air… what’s going on?

Written by:Air conditioner is blowing hot air
Mitch Apalategui
on Sept. 14, 2014

Sharp Air Conditioning & Heating, LLCAnother common call we get here at Sharp Air Conditioning & Heating is someone calling in to say their air conditioner is blowing hot air. This would seem to be even worse than if it was simply not blowing any air at all, especially when its hot enough outside without a heater blowing inside too! Below are a few common reasons for this “hot problem” and what you might be able to do to fix it.

  1. A clogged air filter – We will keep saying it over and over, but clogged air filters are the number one culprits for many HVAC issues. While a dirty filter might not be the sole reason your air conditioner is blowing hot, it can be a major factor in restricting airflow. Changing your filters can be one of the easiest maintenance issues that you preform on your home, it’s all about remembering to do so. With the dust storms that we get in Phoenix and the surrounding Arizona desert, changing dirty filters should be at the top of your maintenance list. Change those filters!
  2. Check thermostat settings – Every now and then we get a call that we fix over the phone. Usually, the root of the problem is someone has unknowingly changed the settings on their thermostat. It can be as simple as forgetting to change over to “cool” in the spring, or the system may just have the fan on. Checking your thermostat settings before calling in an AC issue can save you time and hassle.
  3. Refrigerant Issues – Sometimes your system can develop a leak in the refrigerant lines, and cause a very slow leak that can reduce the amount of refrigerant in your system. Your AC system needs to have a proper “charge”, or amount, of refrigerant in the system to operate correctly. A few tell tale signs of a refrigerant leak could be ice forming anywhere on your system, or you might even see an oily substance on your outside unit. If you see any of these signs, give Sharp Air Conditioning & Heating a call, and we will send a professional out. This can usually be an inexpensive repair if your system is simply low on refrigerant.
  4. Condenser/Outdoor Unit – Another common issue that we get called out on is that it seems the inside fan is blowing but the outdoor unit, also known as a condenser, does not seem to be on. First thing to do, as a homeowner is to check to see that the unit has power, or that a breaker has not been tripped. Simply making sure the breaker is to the “ON” position can fix your issues. Another easy fix to look for is to clear debris from your condenser. If you can see dirt and leaves and other “stuff” stuck to the sides, this will restrict your system and it will have a hard time cooling. Again, with the Haboobs that we get here in Phoenix, Mesa, and the entire valley, dirt can build up very quickly, so a quick check can save you discomfort when you need the AC the most.

 

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