Blower Door Test Requirements

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Blower door test requirements.

50 pascals the energy code chapter 11 also states that code officials require that testing shall be conducted by a certified third party pg. The washington state energy code requirements now require blower door testing for air leakage on new construction and many types of remodeling projects. Blower door energy assessment tests include a blower door test above to determine air leakage rates. Record five 10 second average minimum baseline readings to determine the level of accuracy perform blower door test using the baseline and cfm50 functions.

The building or dwelling unit shall be tested and verified as having an air leakage rate of not exceeding 5 7 air changes per hour in climate zones 1 and 2 and 3 air changes per hour in climate zones 3 through 8. Each home must be 7 air changes per hour 7 ach50 or less to pass. Testing shall be conducted with a blower door at a pressure of 0 2 inches w g. Suggested minimum requirements cost from 100 to several hundred dollars de pending on the level of detail and the types of tests provided.

So far it seems clear. How does it work. These tests determine the air infiltration rate of a building. A blower door consists of a frame and flexible panel that fit into an exterior doorway.

This entry was posted in all industries. Blower doors consist of a frame and flexible panel that fit in a doorway a variable speed fan a pressure gauge to measure the pressure differences inside and outside the home and an airflow manometer and hoses for measuring airflow. Knowing how much and how quickly air is leaking through your home s envelope can. Beginning with the 2012 iecc a maximum air leakage rate is defined and each new home must meet this tightness level verified with a blower door test.

But since code credit is received for ach50 values less than 7 if a lower value is entered for compliance the blower door test must show that the house s leakage is at or below that lower value rather than 7. For the blower door test it is specified that the test must be undertaken to en13829 method a and that the blower door reference volume called vn50 in the phpp is the full internal air volume of the building under test. However many testers architects builders and specifiers find that there is still much room for doubt. A blower door test is performed to measure the exact air tightness of a home.