Most belt noise is caused when one of two conditions. Either the belt is loose or it is worn (indicated by smooth shiny surface on the pulley side) and should be replaced.
low on freon compressor kicking in and out
Bearing in: Alternator? Water pump? A/C Compressor? Belt tensioner?
If this is a general noise, it could be the transaxle. When you are accelerating, the engine is pushing the gears, and when you let go of the pedal, the vehicle starts to shift back down. If this is an engine noise, it could be predetonation or a valve problem.
the universe is noisy. eliminate all other noise sources and you still have the big bang.
APC
Bad bearing in compressor? Bad bearing in compressor?
It makes noise and cools everything.
Some effective ways to reduce the noise produced by a noisy compressor include installing soundproofing materials around the compressor, placing the compressor in an enclosed space, using vibration isolation mounts, and ensuring proper maintenance of the compressor.
Yes
Have a noise cancelling headset will help a great deal to eliminate background noise.
Somthing to do with the AC.
Compressor surges can happen when there is a line spike, during storms or when other equipment is plugged in on the same electrical line. An industrial surge protector can help eliminate power surges.