Is it possible to install this sytem in a house that has underground heat ducts?
I am trying to improve the heat differential from the main part of the house (where thermostat is) and master bedroom, the room farthest away from the heater (which is located in the garage). The differential is normally 3-6 degrees. The duct work appears OK. The air flow is less than the rooms closer to the heater and the air temperature is not as hot as the other rooms.