I own a 75 yr old home - 2 stories with basement - that had an HVAC upgrade installed ~20 yrs ago. I sealed and insulated the attic, but the 2nd floor remains chilly in fall/winter and warm in the summer despite air conditioning.
There are two 6" round air return ducts that open to a ceiling space over the plaster my basement, approximately 15 ft from the heater/air exchange unit.
I blame the open vent pipes for the lack of air exchange in the remainder of the house. Is it reasonable to just blank them off? There is a large 10x24" return duct next to the two round ducts. I realize that I don't want to starve my furnace.
There are two 6" round air return ducts that open to a ceiling space over the plaster my basement, approximately 15 ft from the heater/air exchange unit.
I blame the open vent pipes for the lack of air exchange in the remainder of the house. Is it reasonable to just blank them off? There is a large 10x24" return duct next to the two round ducts. I realize that I don't want to starve my furnace.
