I just recently moved into a brand new condo where they have installed a brand new Geothermal ClimateMaster Genesis heat pump unit. It is 30,000 BTUs, I believe. Whenever the fan is blowing, the air flow seems much greater than any of the other condos that I've visited that have the same unit (the A/C doesn't have to be on - it's coming from the fan itself). The problem is that is that there is an annoying humming accompanying it. The duct is exposed (it is a "contemporary loft"), and it comes from the HVAC unit right in my bedroom, so I can really hear the humming, particularly when I'm lying in bed trying to sleep. I tried setting the fan to LOW, but that didn't seem to make much of a difference. I spoke with the guy who installed it, and he doesn't really seem to know what to do. He proposed re-routing the duct so that the air has to travel a longer distance before it gets to a vent, but he quoted quite a bit of $$$ for that. I don't believe that will work becuase I can still hear the humming coming out of a register about 35 feet away at the end of the duct!
Any suggestions? I think he's just messed up the installation somewhere, and thinks charging me another $$$ to dampen the sound is "worth a shot."