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Even if you have a top-tier air conditioner, common issues can cause window unit power problems. A faulty air conditioner that gets intermittent power will shut off before reaching a comfortable temperature, leading to hot and stale indoor air. Luckily, the most common window air conditioning problems only require simple repair or maintenance measures. Stick around to learn, “Why does my AC window unit keep turning off?” so you can lower your indoor temperatures.
If you need a new unit and want energy efficiency, read our guide comparing inverter and non-inverter AC systems.
Always call a licensed air conditioning repair technician to refill your refrigerant level, as it is illegal for unlicensed users to handle AC refrigerants.
Power issues on an AC unit can cause frozen evaporator and condenser coils and loud noises from the fan motor or other parts. For example, you might be wondering why your AC stops working at night, which means that it might have a refrigerant leak.
These issues can raise your energy bills and decrease the comfort levels in your home. Luckily, many power problems have simple solutions that you can fix by yourself rather than let them persist for months on end. That said, some repairs require professional technicians, like handling Freon for home ACs.
Ensure that your window AC’s thermostat is set to your preferred temperature and that the AC remote is operational. Additionally, find your timer settings and make sure that the AC isn’t set to power down automatically.
Try plugging your wall unit into an alternate wall outlet and see if you get continuous power. Additionally, a faulty power cord can disrupt the power supply to the AC unit after a few minutes, resulting in intermittent cooling cycles.
Dirty filters can constrict the air supply to your system, resulting in an overheating AC unit. Some air conditioners feature a safety switch that automatically cuts power to the AC when it overheats.
An AC with a bad thermostat sensor cannot sense the actual temperature of your space, leading to cooling issues. The unit will shut off quickly when the broken thermostat signals that your room is cool before the cycle is done.
Disconnect your AC from power before investigating an AC system’s electrical supply or other individual components.
The AC compressor handles the liquid refrigerant in your air conditioner. Some AC models have a compressor circuit that cuts power to the unit if the compressor goes bad. This is a serious problem that usually calls for an AC replacement.
STAT: A 2020 US EIA (Energy Information Agency) survey found that 50% of homes with a window air conditioner unit make less than $40,000 per year. (source)