Blower Door Test Formel

Where required by the code official testing shall be conducted by an approved third party.

Blower door test formel. A blower door test is used on buildings in order to quantify the amount of air leakage through its enclosure. These are some reasons for establishing the proper building tightness. Professional energy auditors use blower door tests to help determine a home s airtightness. Ach 50 cfm 50 x 60 volume ach 50 must be 7 or less ach 50 air changes per hour at 50 pascals cfm 50 cubic feet per minute air movement at 50 pascals from the blower door reading cfm s it.

Reducing energy consumption due to air leakage. If so it. It can also be used to measure airflow between building zones to test ductwork airtightness and to help physically locate air leakage sites in the building envelope. Air leaks are easily located by the loud sound of air rushing through the openings.

A written report of the results of the test shall be signed by the party conducting the test and provided to the code official. Wilson services has been offering blower door services since 2004. Blower door sample calculation air infiltration equation. The conclusion was that the 50 65 cfm50 equated to an eqla of about 2 sq.

Blower door and infiltration testing. In fact we were able to identify some bad weatherstripping on one of the exterior doors during the test. Blower door testing is usually performed in a depressurization mode. During this test a calibrated fan is installed in an otherwise sealed door or window while all the other openings to the exterior are closed.

A blower door is a machine used to measure the airtightness of buildings. As air is exhausted out of the house or building envelope the house becomes depressurized relative to the air pressure outside the house. When the fan is turned on it creates a pressure difference between the outside and the inside. Where required by the code official testing shall be conducted by an approved third party.

The building or dwelling unit shall be tested and verified as having an air leakage rate of not exceeding 5 air changes per hour. That would be about 23 cfm50 for each square inch of eqla. Testing shall be conducted with a blower door at a pressure of 0 2 inches w g. The bottom line is blower door testing is an easy way to determine how well sealed a home is and also an effective tool at locating air leaks.

Testing shall be conducted with a blower door at a pressure of 0 2 inches w g.