Even though we have only one finished room (a guest room) on the second floor of this new house, looking ahead to the time when the rest of the 2nd floor may be finished, our HVAC subcontractor put in a large furnace and AC for it, one big enough to take care of several rooms. The problem now is the noise. When it comes on, it sounds like a jet plane taking off. The subcontractor has suggested diverting a large part of the furnace/AC output into the unfinished attic space, but that will mean that most of what we pay for up there will be wasted. Can anyone suggest other solutions?
Thanks for any comments.