Blower Door Test Requirements

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.

Blower door test requirements.

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. How does it work. Knowing how much and how quickly air is leaking through your home s envelope can. Testing shall be conducted with a blower door at a pressure of 0 2 inches w g.

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. Record five 10 second average minimum baseline readings to determine the level of accuracy perform blower door test using the baseline and cfm50 functions. If a home had wind blowing against it at 20 miles per hour for an entire house the total volume of air in the house would exchange with outside air 7 times. Suggested minimum requirements cost from 100 to several hundred dollars de pending on the level of detail and the types of tests provided.

The blower door test simulates that following. Each home must be 7 air changes per hour 7 ach50 or less to pass. A blower door test is performed to measure the exact air tightness of a home. These tests determine the air infiltration rate of a building.

This entry was posted in all industries. We have years of experience as bpi building performance institute building analysts and can perform the testing that you need to meet code and inspection requirements. So far it seems clear. 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.

A blower door consists of a frame and flexible panel that fit into an exterior doorway. The washington state energy code requirements now require blower door testing for air leakage on new construction and many types of remodeling projects. 50 pascals the energy code chapter 11 also states that code officials require that testing shall be conducted by a certified third party pg. 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.