Blower Door Test Results

It s a linear scale so 2000 is twice as bad as 1000.

Blower door test results.

If you re building a new home the best time to conduct a blower door test is after the home is insulated but before the drywall is hung. These are some reasons for establishing the proper building. Holtkamp heating a c inc. Once he is done with his walk through your auditor will begin the test.

Jason payne taught me this one several years ago and it makes perfect sense. 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. 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. Higher numbers are worse.

Blower door test results are standardized for an air pressure difference of 50 pa. If your home is 2000. Blower door testing is useful for both new construction and existing homes. Blower door test results can determine the airtightness of the building and can be presented in a number of different formats.

The test requires a few parameters be set to yield accurate results. If you ve done any of this testing you know that it takes much longer to set up for the duct leakage testing. 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. I used to go in and do the blower door test first then set up and run the two duct leakage tests.

If the test reveals major problems the leaks will be easier to fix at that point than later on. Understanding blower door test results. What does the blower door number mean. Our energy saver 101 infographic explains the importance of a blower door test during a home energy audit.

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 during a home energy audit. A blower door test is used on buildings in order to quantify the amount of air leakage through its enclosure. Here are some things to know.

The auditor will set up his blower door in an outer door facing outward to depressurize your home in most cases. Professional energy auditors use blower door tests to help determine a home s airtightness. Here is what a reading on the blower door looks like. The blower door test.

Simply put a blower door is a diagnostic tool used to measure how much air infiltration air leakage occurs in a house. By testing a new home a builder. A good rule of thumb is that your home should have a blower door number less than or equal to its square footage. The following will help you conduct your.

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.