Frozen Evaporator Coil and Dirty Air Filter Cause Short-Cycling

In the middle of the night, I woke up because I was hearing odd noises. I’ve always been a light sleeper, so I wasn’t surprised that something had woken me up. When I first opened my eyes, I couldn’t pinpoint what noise I was hearing, but after I layed there for a few moments I discovered the issue. My air conditioner was continuously turning on and off repeatedly. I got out of bed and went over to my thermostat. No matter which buttons I pushed, my air conditioner continued to short-cycle. There was nothing I could do to stop it, so I called the HVAC company’s emergency hotline. The person who answered was understanding of my issue and they told me to shut off my air conditioning system until an HVAC professional could come early in the morning. I did as she was told and went back to sleep. It was a little too warm to get comfortable, but I made it happen. When the sun rose for the day, I anxiously waited for the arrival of the HVAC professional. When he finally showed up, I told him about how my air conditioning system was short-cycling and nothing was stopping it. When he turned it on again, it continued to short-cycle. The HVAC professional spent an hour testing different things and he finally found out what was causing the issue. My air filter needed replacing and there was a frozen evaporator coil. Once the HVAC professional fixed both issues, my air conditioner went back to running normally.


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