Blower Door Test Calculations

There are three primary components to a blower door.

Blower door test calculations.

Of fans 25pa 50pa 75pa total. Simply put a blower door is a diagnostic tool used to measure how much air infiltration air leakage occurs in a house. Results unit of air flow measure m3 h l s number of fans needed fan type test pressure brand model no. Blower door sample calculation air infiltration.

Ach50 is the blower door flow rate at 50 pa depressurization as measured in the blower door test n is a factor that depends on the climate and characteristics of the house see below. 50 cubic feet per minute air movement at 50 pascals from the blower door reading cfm s it takes to achieve 50 pascals pressure difference inside to outside depressurize the building. Cubic feet per minute of air leakage at 50 pascals of pressure rough in. Duct testing calculator new construction air leakage testing calculator blower door test cfm50.

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. N c h s l. C is the climate factor and depends on both the wind and temperatures for the climate see map below. Number of blower door fans needed for commercial blower door air tightness testing.

What is the building envelope click here to find out. It can also be used to measure airflow between building zones to test ductwork airtightness and to help physically locate air leakage sites in the building envelope. Flow inputs target permeability m3 h m2 50pa. Understanding blower door test results.

A blower door is a machine used to measure the airtightness of buildings. The factor n is.