HomeMy WebLinkAboutBLD2017-00195 - 03 ENERGY WORKSHEETResidential Building Air Leakage Test (Blower Door Test) Results
Permit #: ___________________________
House address or lot number: ______________________________________________
City: __________________________ Zip: _____________________
Cond. Floor Area (ft2): ________________ Age of house: _______________________
Source (circle one): Plans Estimated Measured
Results shall be reported as Air Changes per Hour at 50 Pascals (ACH50) and shall be calculated as follows:
ACH50 = (CFM50 x 60)/ Volume
Where:
CFM50 = Blower door fan flow at 50 Pascal pressure difference
Volume = Conditioned Floor Area of the housing unit x ceiling height
Blower Door Test Result: _____________ ACH50
_____________ CFM@50Pa
Ring (circle one if applicable): Open A B C
Blower Door Fan Location: ______________________ Weather Conditions: ________________________
I certify that these blower door results are accurate and determined using standard industry protocol.
Company Name: ________________________________ Technician: ____________________________
Technician Signature: ____________________ Date: ____________ Phone Number: ________________
2012 Washington State Energy Code reference:
R402.4.1.2 Testing. The building or dwelling unit shall be tested and verified as having an air leakage rate of not
exceeding 5 air changes per hour in Climate Zones 1 and 2, and 3 5 air changes per hour in Climate Zones 3 through 8.
Testing shall be conducted with a blower door at a pressure of 0.2 inches w.g. (50 Pascals). Where required by the
code official, testing shall be conducted by an approved third party. A written report of the results of the test shall be
signed by the party conducting the test and provided to the code official. Testing shall be performed at any time after
creation of all penetrations of the building thermal envelope. Once visual inspection has confirmed the presence of a
gasket (see Section 502.4), operable windows and doors manufactured by small business shall be permitted to be
sealed off at the frame prior to the test.
RECEIVED BY DCD 7/13/2022
During testing:
1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended
weatherstripping or 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, access hatches to conditioned crawl spaces and
conditioned attics shall be open;
4. Exterior openings 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.
RECEIVED BY DCD 7/13/2022