I am a new home owner and I am starting to understand why my Dad got frustrated all those years when something broke in the house. I have just bought a townhome here in Houston. The compressor units are mounted on the roof. When the AC starts, there is a loud humming noise (i assume it is the compressor starting up) for about 15 seconds and then it drowns out. It cools fine and works great other than the noise. My neighbor is complaining to me saying it creates to much noise. What causes this loud hum when it starts? I know that there is always going to be some kind of hum, when it starts, but this is out of the ordinary. Any suggestions or tips are appreciated. Thanks.
Joseph