blower door inspection letter •
� }.a 21 Thomson Avenue
I� IIL L ASS OC AlES
Glens Falls, NY 12801
Heating & Cooling Specialists 518.798.550o Fax 518.798.562o
www.thermalassociates.com
To whom it may concern,
We,Thermal Associates,LLC. Will be performing a blower door test for Hilltop Construction Co. Inc.
At their construction project for Nemer Dodge on Quaker Road in Queensbury,NY.
N1102.4.3.1 Testing option.Building envelope tightness and insulation installation shall be considered
acceptable when tested air leakage is less than seven air changes per hour(ACH)when tested with a blower
door at a
pressure of 33.5 psf(50 Pa)as verified using instruments and procedures specified in ASHRAE/ASTM E779.
The test shall be conducted by a qualified person,who shall demonstrate competence to the satisfaction of the code
enforcement official for the conduct of such tests.For the purpose of this section,ACH50 shall mean air
changes per hour of infiltration into a house as measured with a blower door at 50 pascals of pressure, in
accordance with
ASHRAE/ASTM E779. Testing shall occur after rough in and after installation of penetrations of the building
envelope, including penetrations for utilities,plumbing, electrical,ventilation and combustion appliances.
During testing:
1. Exterior windows and doors,fireplace and stove doors shall be closed,
but not sealed;
2.Dampers shall be closed, but not sealed, including exhaust, intake,
makeup air,back draft and flue dampers;
3.Interior doors shall be open;
4.Exterior openings for continuous ventilation systems and heat recovery
ventilators shall be closed and sealed;
5.Heating and cooling system(s) shall be turned off;
6.HVAC ducts shall not be sealed; and
7. Supply and return registers shall not be sealed. FILE COPY
Adam DeVit
Blower Door Tester
Thermal Associates
www.thermalassociates.com