new HVAC vent placement
We are in the process of sealing up rotting sub-slab HVAC ducts and installing a whole new furnace and duct system in our 2 story townhome.
One contracter walked thru our house and explained how the ducts would run and how the vents would be placed above closet doorways or in soffits along the ceiling. Since heat rises, I am concerned that our rooms would not heat efficiently during the winter with the ducts so high up. Is this a valid concern? The previous registers are in the floor! Our 18'X 12' living room is on the slab and is extremely cold in winter. Should we have more than 1 register in this room?