Welcome Lisany:
There are two companies that make systems especially for retrofitting to older homes; Space Pac and Unico. Either one can be contacted through a Google search. They use very small ducts that can be installed in your home without intrusion and use a high speed, high pressure air movement but are quiet and do not cause unwelcome drafts; plus they can be installed in the attic, saving space in the basement or living area.
Glenn
|