blower door test
Ryan Wild
518.832.9213
ryan@clearvuinspections.com
Silverberg Classic Cars
240 Lockhart Mountain Road
Lake George, NY 12845
518.744.2064 Don Beagle
donbeagle02@gmail.com
We, ClearVU Inspections, performed a one-point air tightness, blower door test on the
single family dwelling at 240 Lockhart Mountain Road, Lake George, NY to determine
the air changes per hour on September 10, 2020. The dwelling was depressurized and
the testing procedure performed as per IECC – R402.4.1.2.
Test conditions were as follows:
Fan location - Front door
640’ above sea level
1,203 CFM50
66°F outside air temperature
66°F inside air temperature
Pre-Test Baseline Building Pressure -0.1 Pa
-50.0 Pa testing pressure
TEC DG-1000 & Model 3 Fan
Altitude Correction Factor = (1+(.000006 x altitude)) x CFM50 = n/a
Results: ( 1,203 CFM75) / ( 5,475 cubic feet) =
0.220 ACH50
IECC – C402.5 - The thermal envelope of buildings shall comply with Sections C402.5.1 through C402.5.8, or the
building thermal envelope shall be tested in accordance with ASTM E 779 at a pressure differential of 0.3 inch water
gague (75 Pa) or an equivalent method approved by the code official and deemed to comply with the provisions of
this section when the tested air leakage rate of the building thermal envelope is not greater than 0.40 cfm/ft²(2.0 L/s
m²). Where compliance is based on such testing, the building shall also comply with Sections C402.5.5, C402.5.6 and
C402.5.7.
During testing:
1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended
weatherstrippingor other infiltration control measures;
2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond
intended infiltration control measures;
3. Interior doors, if installed at the time of the test, shall be open;
4. Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed;
5. Heating and cooling systems, if installed at the time of the test, shall be turned off; and
6. Supply and return registers, if installed at the time of the test, shall be fully open.
Ryan Wild
HERS Rater/BPI - 5063518
ClearVU Inspections
www.clearvuinspections.com