blower door results
NORTH EAST BUILDING PERFORMANCE ADVISORS
Serving the Capital District, Saratoga and Adirondack Regions
Oct 10, 2018 7 Rocky Ridge, Warrensburg, NY 12885
Foothill Builders LLC
9 Mountainside Drive
Queensbury, NY 12804
RE: Blower Door Test for NYS Building Code, Town of Queensbury
Mr. Joseph Leuci:
After inspection of the New 1 Story Home at 51 John Clendon Rd, 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 2.29 ACH/50 Pascal.
The total volume of conditioned space at 51 John Clendon Rd. is 24445 cubic feet
taking into consideration all conditioned space in the home. The cubic feet per
minute @ 50 Pascal was 932 CFM/50. The height correction factor for New York
State is 19 for a one story building, as such the tested home @ 51 John Clendon Rd.
has the natural rate of air exchange of 0.12 air changes per hour/natural or 49 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
3+1 bedrooms it would need 1422 sq ft/100 times 3 cfm= 43 cfm + 30 cfm or 73 cfm.
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