On Sat, 24 Nov 2007 10:38:52 -0500, "Stormin Mormon"
I do this but how would this "gently pressurize the house"?
At best it would equalize the pressure between outside and
inside. Realistically if you have a tight house you would still
have a slight vacuum in the house because the exhaust
flow of the furnace is the force that creates the vacuum
force at the inlet. The inlet is always trying to catch up with
the outlet but never actually does.
That's exactly what the hvac contractor did on my new house except that he used
solid 6" pipe, not flex hose. He said I could buy a powered damper, but he
didn't think would would be any better than a manual damper which is what we
ended up with.
"Tell me what I should do, Annie."
"Stay. Here. Forever." - Life On Mars
That is EXACTLY what I did in my house and it works well. The slight
pressurization minimizes incoming drafts in the living area, we get
fresh air, and the furnace heats the air as it enters. I know it
costs a bit of fuel but probably saves a little due to the the cold
air not entering in the living spaces.
I think this is a great idea and should be standard practice.
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