Under normal operating conditions and moderate summer weather, a properly functioning residential air conditioner should typically run for fifteen to twenty minutes per cooling cycle before reaching the desired temperature setting and shutting off. This duration provides enough time to effectively remove humidity and evenly distribute cool air throughout the house. However, cycle lengths can vary significantly based on outdoor temperatures; during severe heat waves, it is completely normal for cycles to last thirty to forty-five minutes or longer. If your system runs for only two to five minutes before shutting off, it is experiencing short cycling, whereas running indefinitely for hours without stopping indicates an underlying performance issue that needs attention.
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