High pitched noise from the A/C

[signalwarrant]

I have a 2014 Salem Cruise Lite 184BH with a window unit type Frigidaire A/C unit in it. I turn it on and it works great but when the compressor kicks in it makes a high pitched squealing noise.

The noise is bad enough I had to buy some ear plugs in order to sleep. Anyone else have this problem and have any idea how to fix it?

[mikel68]

Compressors have internal moving parts, to compress the gas to a liquid. I've heard of a high pitched noise happening a few seconds after it turns off. That usually means the valves are scarred and freon is leaking back through the pistons/valves. Are you sure it's the compressor? Maybe not the fan? Otherwise it might be bearings going bad. how old is it? Warranty? if so, return immediately or call for work.

[jawga]

Ours doesnt make that noise