blower door it' THERMAL ASSOCIATES
Quality. Comfort. Satisfaction.
Thermal Associates
21 Thomson Ave.Glens Falls, NY 12801
5t8.798.5500 Fax 798.5620
Hilltop Construction
51 Crowley Road
Hudson Falls, NY 12839
518-798-0338
We, Thermal Associates, performed a blower door test on the project at (GFNB) 221 Corinth Rd.
Queensbury, NY, to determine the air changes per hour, for Hilltop Construction Co. on August 13, 2019.
The result of the test is: ( 620 CFM50 x 60 Minutes) / (12,903 cubic ft.) =
2.88 ACH50
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.
Adam DeVit
Blower Door Tester
Thermal Associates
www.thermalassociates.com