Blower Door Test Formel

Air leaks are easily located by the loud sound of air rushing through the openings.

Blower door test formel.

Our energy saver 101 infographic explains the importance of a blower door test during a home energy audit. If so it. Blower door testing is usually performed in a depressurization mode. Testing shall be conducted with a blower door at a pressure of 0 2 inches w g.

These are some reasons for establishing the proper building tightness. That would be about 23 cfm50 for each square inch of eqla. Where required by the code official testing shall be conducted by an approved third party. Reducing energy consumption due to air leakage.

The conclusion was that the 50 65 cfm50 equated to an eqla of about 2 sq. A blower door is a machine used to measure the airtightness of buildings. More recently in an article by an editor of journal of light construction a duct blaster was used to conduct a blower door test in a very tight house. Professional energy auditors use blower door tests to help determine a home s airtightness.

Blower door sample calculation air infiltration equation. The building or dwelling unit shall be tested and verified as having an air leakage rate of not exceeding 5 air changes per hour. Blower door and infiltration testing. Wilson services has been offering blower door services since 2004.

Testing shall be conducted with a blower door at a pressure of 0 2 inches w g. When the fan is turned on it creates a pressure difference between the outside and the inside. 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. Where required by the code official testing shall be conducted by an approved third party.

As air is exhausted out of the house or building envelope the house becomes depressurized relative to the air pressure outside the house. 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. In fact we were able to identify some bad weatherstripping on one of the exterior doors during the test. We perform this service for a nominal fee or often times we will include this service at no extra charge for our massachusetts customers purchasing new heating and cooling systems from us please ask your sales representative if you qualify for a free blower door consultation.

A written report of the results of the test shall be signed by the party conducting the test and provided to the code official.