In my case I spoke with the engineer for Lifebreath here in London where they are made, and he took the square footage of the house, the year it was built, extra insulation of any kind added after the build, and then wanted to know the surface area and temperature of all the open water in my house, to come up with an accurate determination.
much difference from the regular formula for the 0.35 air changes an hour (sqft x height / 60 x 0.35 to give CFM)
12-22-2011, 11:40 PM
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