Blower Door Test
Janet MacIlvaine and George James from the Department of Energy show Bob how they conduct a blower door test on the Habitat for Humanity Blitz Build project in Yonkers, New York. The blower door is used to measure the amount of air leakage in the building. Today's tighter homes need controlled ventilation, which is provided here by a Tamarack Preventilator exhaust fan. The fan has special controls that continuously maintain a slow ventilation rate and allow the occupants to boost the ventilation in the bathroom when needed. The test shows that the house is both well-sealed and well-ventilated.
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