Air conditioners are built to run quietly, a click on startup, a gentle whoosh of air, and not much else. So when yours starts screeching or squealing, it’s worth paying attention. A high-pitched noise usually points to a specific part that needs help. Here’s what’s likely causing it.
Common Causes of a Screeching AC
A worn or slipping fan belt
In older units, a belt connects the motor to the blower. As it ages or the humidity rises, it can slip and squeal. A worn belt is a straightforward replacement.
A failing fan or blower motor
Bad motor bearings produce a high-pitched screech or grinding sound. Left alone, the motor can seize up entirely.
A bad compressor
A loud, sustained screech from the outdoor unit can signal high internal pressure or a failing compressor, the most serious cause and one to address fast.
Loose or worn parts
Sometimes it’s simply a loose component vibrating at high speed.
Should You Keep Running It?
It’s best to shut a screeching AC off and get it looked at rather than risk turning a small fix into a major one. A squeal is an early warning, catching it now is cheaper than a seized motor or a dead compressor later.
Quiet It Down the Right Way
Bearcat will pinpoint exactly what’s making the noise and fix it before it becomes a bigger repair. See our AC repair services, or call (509) 891-5110.
