[Greenbuilding] Source of Combustion Air

[Drew A. Gillett, P.E.]

and why would you have anything else?
----- Original Message ----- 
From: "Steve Houlihan" <sho11 at comcast.net>
To: "'Greenbuilder list'" <greenbuilding at listserv.repp.org>
Sent: Thursday, April 12, 2007 12:01 AM
Subject: [Greenbuilding] Source of Combustion Air


> With all this talk about whether to include a basement in the building
> envelope I wonder where a furnace in the enclosed basement gets combustion
> air.  If it takes it from the conditioned space and the furnace flue
> exhausts to the outside then it creates a negative pressure in the house.
> It could get it from the outside only if it is a high efficiency furnace.
>
> Steve
>
>
>
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