blower door test
NORTH EAST BUILDING PERFORMANCE ADVISORS
Serving the Capital District, Saratoga and Adirondack Regions
October 9, 2019 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 2 Story Home at 64 John Clendon 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 2.99 ACH/50 Pascal.
The total volume of conditioned space at 64 John Clendon Road is 28912 cubic feet
taking into consideration all conditioned space in the home. The cubic feet per
minute @ 50 Pascal was 1441 CFM/50. The height correction factor for New York
State is 15.4 for a two story building, as such the tested home @ 64 John Clendon
Road has the natural rate of air exchange of 0.1942 air changes per hour/natural or
93.6 cfm natural 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. That means for
5+1 bedrooms it would need; 2164 sq ft/100 times 3 cfm= 65 cfm + 45 cfm for 110
cfm total. It would also be advantageous to use the bathroom and kitchen fans to help
control humidity and improve indoor air quality.
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
1.888.472.2774
7 Rocky Ridge Road 4A Vatrano Drive
Warrensburg, NY 12885 Albany, NY 12205
Phone (518)623.7016 Phone (518)350.2941
Fax (518)623.7015 Fax (518)694.0102