On Tue, 2 Jan 2007 22:39:37 PST, (Everett M.
Greene) wrote:

I've been contemplating methods of obtaining heat from
the attic for heating the house during appropriate times
of the year. One idea I have is to put a ducted fan in
the attic to blow the warm/hot air into the garage as an
initial experiment. I can heat the garage to determine
the feasibility of the concept.

I'm also thinking that a reversible ventilator would be
in order in that it could double as a way to vent hot
air from the garage into the attic and out through the
roof vents during hot weather. This would even cool the
attic somewhat and help the A/C load on the main part
of the house.

Anyone have any thougts?

IMHO:

IN the winter time, if you have a properly ventulated attic space you
should have a 'cold' roof. So effort applied for yoru return can be
minimal. I suggest if you want to try to utilize solar heat, cut out
the middle step and get professionallly done heat exchangers installed
on your roof.

Another idea that came to mind, if you were pumping cold fluid into
tubes in your attic, you migght be creating a condensation problem on
the tubes that has to be dealt with.

Not a attic, or solar heating expert, just guessing here...

tom @ www.MedJobSite.com