Blower Door Test Procedure

When the fan is turned on it creates a pressure difference between the outside and the inside.

Blower door test procedure.

These leakage characteristics of the building envelope can then be used to calculate how much airflow will be induced through the building envelope for a given. Be prepared to point out areas that you know are. After the necessary procedures to set up the house have been performed the test itself takes about 10 to 15 minutes to conduct. If it s a hot humid or cold day when you run the blower door first you re making the house uncomfortable for the whole time you re setting up the duct leakage tests.

If you heat with wood be sure all fires are completely out not even coals before the auditor arrives. Measure the airflow through the fan with the duct system at pressure. Window and door. Once you ve got those results unseal the vents and run your blower door test.

Plan to do a walk through of your home with the auditor. Detailed instructions are usually provided by the supplier or manufacturer of the blower door kit. Door fan test for determining of minimum hold time according to iso 14520. A blower door test is used on buildings in order to quantify the amount of air leakage through its enclosure.

C building and n building. Bill van der meer. The multi point blower door test procedure results in a series of known values of q n fan and p n building. Guide the air leakage test or blower door test uses a calibrated fan and digital pressure gauge to either pressurize or depressurize a home to a standard test pressure of 50 pascals with respect to the outside and measure the air leakage flow at that pressure.

Take the following steps to prepare your home for a blower door test. Then run your two duct leakage tests. So far it seems clear. Instead do all your setup upfront.

Standardization of the test procedure allows the air leakage of one. 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. Typical p n building values are 5 10 20 30 40 and 50 pascal. Ordinary least squares regression analysis is then used to calculate the leakage characteristics of the building envelope.

Use a calibrated fan to pressurize the duct system. Typically done under negative pressure the fan sucks the air out of the home causing it to come in through whatever pathways it can find. Test procedures are fairly straightforward. 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.