Why is My American Standard AC Making Weird Noise?

Ignoring the mysterious noises from your AC can turn minor issues into major expenses, as these noises could signal anything from needing a simple tune up to costly repairs, to —worst case — replacement of the entire unit. The sooner you can determine the cause of the noise and resolve your AC issues, the better. We are sure you don’t mind keeping your appliance in a silent mode. You will be surprised to learn your AC is able to produce a bunch of sounds. You don’t need to have musical education to recognize the type of noise. Still, it will be handy while tracking the origins of the problem. Look through the most common sounds ACs typically produce. A humming sound generally isn’t serious, but it still signals that something inside your air conditioner is off. Loose parts and refrigerant piping can cause vibration and, if left unchecked, can lead to a more serious maintenance issue. Sometimes humming or buzzing noises point to electrical problems. If the compressor hums and refuses to start, there may be an issue with the motor, though loose wiring could trigger this noise, too. Blower and fan noises such as squeaks, squeals and rattles may be transmitted through the duct system. Outdoor fan motors and indoor blower motors squeal loudly when they’re going bad. The blower wheel and housing will also squeal when they malfunction. For some units, this sound is normal upon start-up. You should be able to identify whether it’s a sound that the unit always makes or if it's something new. We strongly recommend professional assistance as it is the most reliable way to cope with the trouble soon.