It was recently installed in my apartment by the retarded apartment maintenance staff. It seems like they messed it up because I can't imagine it's supposed to do that. Plus they generally mess everything up.Thanks
Well I can understand making noises while running but making noises while not running is something new that I have heard.
If this is a new unit, then it is the heat exchanger which contracts as it cools.
Wow,.. no stereotyping problems with you, huh? Since it must be a secret as to what type and style it is, then you should probably ask the guys that did manage to install it. We are not mind readers. Of course, being a super duper genius and top grade tech I'm wondering why you didn't just whip it right in there for yourself, and show everyone how its done? Oh, I forgot,.....you can't. Its the heat exchanger cooling off. Your welcome. jerk