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Blower Door Report 77 Round Pond Rd, Foothills Builders LLC
NORTH EAST BUILDING PERFORMANCE ADVISORS
Serving the Capital District, Saratoga and Adirondack Regions
November 5, 2020 7 Rocky Ridge, Warrensburg, NY 12885
Foothill Builders LLC
9 Mountainside Drive
Queensbury, NY 12804
RE: Blower Door Test for NYS Building Code,
Mr. Joseph Leuci:
After inspection of the New 1 Story Home at 77 Round Pond Road, Queensbury,
New York and completion of a Blower Door Test consistent with the practice of
depressurization to 50 Pascal in a winter condition with the exterior windows and
doors shut and the interior doors to all the rooms open, my observations are as
follows:
This home tested passed the current New York State Building Code for Air Changes
per Hour @ 50 Pascal of less than or equal to 3 ACH/50 (for Homes permitted after
st
November 1, 2016). The tested number is 2.998 ACH/50 Pascal.
The total volume of conditioned space at 77 Round Pond Road is 16931.2 cubic feet
taking into consideration all conditioned space in the home. The cubic feet per
minute @ 50 Pascal was 846 CFM/50. The height correction factor for New York
State is 14 for a two story building, as such the tested home @ 77 Round Pond Road,
has the natural rate of air exchange of 0.214144 air changes per hour/natural or 60.4
cfm natural air infiltration credit based on the blower door test.
In the latest (2013) version of ASHRAE 62.2, high-performance homes need to be
ventilated at 7.5 cfm per bedroom + 1, plus 3 cfm per 100 square feet of living space.
That means for 3+1 bedrooms it would need 1352 sq ft/100 times 3 cfm= 40.6 cfm +
30 cfm or 70.6 cfm total. That leaves a deficit of 10.2 cfm. It would be advantageous
to set or run the HRV at 10 cfm continuous or a higher air flow rate to make up the
deficit and help control humidity and improve indoor air quality in the heating season.
My credentials are as follows:
BPI Certified Building Analyst
BPI Certified Envelope Specialist
BPI Certified Heating Professional
If you have any questions regarding my findings please feel free to contact me.
Sincerely,
Jack Towne
518-796-1929
7 Rocky Ridge Road 4A Vatrano Drive
Warrensburg, NY 12885 Albany, NY 12205
Phone (518)623.7010 Phone (518)350.2941
Fax (518)623.7015