Calculating the volume of a home is pretty simple math. You measure the length x width x height of all the interior spaces. I'm going to use a Test House which measures 20ft x 30 ft and has 2 floors which are 8 ft tall.
The volume of the home is 9,600 cubic feet. My Blower Door reading was 5,400. I can now print a report translating what that all means to the owner of the home.
The test shows an air exchange rate of 33.75 per hour @ -50pa. That rate of air leakage represents a hole in your home of about 3.75 sfT. The Blower Door reading for a house of this size (if it was built today ) should be about 480. I would recommend this house be "tightened up" approximately 90%.
That "tightening up" process is called Air Sealing and I'll start that conversation tomorrow.
The test shows an air exchange rate of 33.75 per hour @ -50pa. That rate of air leakage represents a hole in your home of about 3.75 sfT. The Blower Door reading for a house of this size (if it was built today ) should be about 480. I would recommend this house be "tightened up" approximately 90%.
That "tightening up" process is called Air Sealing and I'll start that conversation tomorrow.
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