Blower Door Test Results

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.

Blower door test results.

Here is what a reading on the blower door looks like. Cfm50 is the airflow measured in cubic feet per minute from the blower door fan needed to create a change in building pressure of 50 pascals. Once he is done with his walk through your auditor will begin the test. If your home is 2000.

This test ensures a certain level of energy performance and is often used when a project team is aiming for a performance based. Blower door test results can determine the airtightness of the building and can be presented in a number of different formats. The blower door test. Higher numbers are worse.

Blower door test results are standardized for an air pressure difference of 50 pa. He will systematically move about your home setting up the house for the test. A good rule of thumb is that your home should have a blower door number less than or equal to its square footage. Understanding blower door test results.

Blower door test during a home energy audit. Our energy saver 101 infographic explains the importance of a blower door test during a home energy audit. Simply put a blower door is a diagnostic tool used to measure how much air infiltration air leakage occurs in a house. What does the blower door number mean.

These are some reasons for establishing the proper building. Holtkamp heating a c inc. Better consistency and reproducibility occur at higher pressures. Professional energy auditors use blower door tests to help determine a home s airtightness.

Air flow at 50 pascals is the preferred value for blower door testing the amount of airflow measured in cubic feet per minute cfm for a. If you ve done any of this testing you know that it takes much longer to set up for the duct leakage testing. A blower door test is used on buildings in order to quantify the amount of air leakage through its enclosure. Jason payne taught me this one several years ago and it makes perfect sense.

The test requires a few parameters be set to yield accurate results. Blower door tests are performed by trained and certified energy auditors but a homeowner can conduct a mini test to help pinpoint leaky areas of the home. Here are some things to know. Don t do the blower door test first.

The following will help you conduct your. I used to go in and do the blower door test first then set up and run the two duct leakage tests. Last year we built an energy star home for a customer and we used a blower door test to evaluate the houses air infiltration performance.