8 Reasons Your Air Conditioner Keeps Shutting Off

If your air conditioner cycles on and off every few minutes, it will cause your utility bills to go up, your AC to break down, and your system to last for less time. To remedy these issues and to save money, call our experts at Bruin’s Plumbing & Heating Ltd. for assistance with your new AC installation in Lacombe, AB, Red Deer, Sylvan Lake, and surrounding areas.

What Causes Your Air Conditioner To Cycle On And Off?

Short cycling is likely due to a dirty, broken, or failing part and other mechanical or electrical issues. Here are some of the main reasons:

8 Reasons Your Air Conditioner Keeps Shutting Off

Faulty Thermostat

If your AC unit has an old, outdated thermostat, it could be the reason why your system turns on and off frequently. Consider upgrading to a new, digital thermostat for more accurate temperature readings.

Low Refrigerant

Your air conditioner won’t be able to cool your home efficiently if the refrigerant level is too low. As a result of this failure to function, the various components of your AC system will be put under a lot of strain, resulting in the system turning on and off frequently.

Malfunctioning Compressor

Compressors that aren’t working right often break down and cause overheating. When this happens, your AC unit may turn off and on a lot. If your AC compressor isn’t working right, it can cause more problems and make the other parts wear out faster.

Blocked Drain

Most AC systems have a drain float switch that turns the system off if the drain is clogged. If your air conditioner unit is constantly shutting off, check the drain line to see if it’s blocked.

Condenser Coil

Condensers may have difficulty completing heat exchanges if they are covered in a thick layer of grime. Because of this heat buildup, your air conditioner may shut down, and you may have a catastrophic breakdown.

Electrical Problems

Electrical issues can cause your AC to shut off repeatedly, which is unfortunate. If you’re unsure about the cause of an electrical issue with your air conditioner, call us for AC replacement in Lacombe, AB, Red Deer, Sylvan Lake, and surrounding areas immediately.

Clogged Air Filter

Your central air filters should be changed once every few months—even more often during the year’s hottest months. When the air filters become clogged with dust and dander, the flow of air is restricted.

Large AC

An oversized AC in your home will cause your utility bills to skyrocket and your AC to break down. Many people create the mistake of thinking that a larger AC will cool their home faster, but this isn’t always the case.


Regular HVAC system maintenance reduces the risk of a system failure. Repairing a small problem can save money on your monthly utility bills and prevent it from getting worse.

AC issues that cause short cycling are always best handled by one of our trained HVAC contractors in Lacombe, AB, Red Deer, Sylvan Lake, and surrounding areas. If you live in Lacombe or a nearby area and need an AC repair, look no further than Bruin’s Plumbing & Heating Ltd. Contact us at 403-343-6060 or visit our website.