We are looking at installing our own ductwork to the upstairs rooms, and would like to do it ourselves to cut back on costs- we have decided to run the ducts in the corners of the first floor rooms, and box in the ducts with drywall. My question is this- what size ductwork should we buy? Also, there is one cold air return in our house right now, located on the first floor at the bottom of the stairs. I am assuming we need to install another return upstairs somehow, but how do we go about doing that?
Thanks for any help in this matter...
Lisa
