Wave007
New Member
I have a 2 story home which is approx. 70 years old. We have no cold air return on the 2nd level and are in the process of replacing the old furnace with a new one. My question is, is it a necessary to have a cold return on the 2nd level? If so what are the reasons. Also the cold air return on the main level is on the floor very close to the stairs going up.