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Touchstone Heating & Air Inc. Blog

My AC Is Running Constantly—What’s Wrong?


When the summer heat ramps up in Florida, it can be searingly hot. On some days it may feel as if you have to run your air conditioning system constantly.

But there’s a difference in needing to keep your air conditioner on and your air conditioner’s compressor never cycling down. When the compressor just continues to run and run, then there’s something wrong. The compressor is designed to run through cooling cycles, which is why under normal circumstances you’ll hear the compressor kick in periodically during the day. When it never shuts off, you probably need air conditioning repair in Lake City, FL from professionals.

Why the AC Won’t Stop Running

On to the big question: Why is this happening in the first place?

There are a few possible reasons, and some you might be able to correct on your own. Others will take an HVAC technician.

  • Clogged Air Filter – This is a source of many different air conditioning problems, and it’s also a smart idea to check on the filter as soon as your cooling system starts acting odd. When the filter blocks airflow, it can lead to the system working so hard it might overheat. Make sure you always change the filter every 1–3 months during cooling season.
  • Dirty Coils – The coils of both the indoor and outdoor cabinet must be clean to allow for heat exchange. If too much heat becomes trapped in the system because of dirty coils, the AC won’t shut off. Please don’t attempt to clean these coils off yourself, since this can bend and damage them.
  • Thermostat Malfunction – The source of the non-stop air conditioner may be that the thermostat has glitched and isn’t sending the signal to shut off the compressor. The thermostat may also be incorrectly sensing temperatures so that it never knows that it’s time to shut off the compressor. Fixing this could be as simple as a tech recalibrating the thermostat, or as complex as needing new climate controls put in.
  • Leaking Ductwork – This is a problem people often overlook because they rarely consider their ducts at all. Air leaks allow the cool air to escape and will push the air conditioner to run all the time to replace the lost air. Technicians must locate the leaks and seal them with special tools.
  • Old AC – Is your air conditioning system more than 15 years in service? Then the constant running may be warning you the AC is wearing down to the point it needs to be replaced.
  • Poorly Sized AC – If you have a new air conditioning system and this is its first summer cooling your house, it may have been improperly sized when it was installed so that it’s either underpowered or overpowered. This often happens if amateurs handle the installation. Unfortunately, the only solution to this is to have the AC replaced.

No matter what the problem ends up being, you can depend on our trained HVAC experts to have the problem solved so you can enjoy the summer.

Repair your AC with an experienced team: [(site_name)] has served the communities of North Central Florida since 1998!

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