The blower door manual will include a correction table to determine a correction factor based on the pressure in the duct work. To calculate the duct leakage to outside, subtract the leakage with the registers sealed from the total building leakage and multiply by the correction factor. Pressure pan test Small pressure pan application This second method of air sealing is known as “blower-door-directed air sealing.”. Blower-door-directed air sealing is a method that was developed in the 1980s by weatherization specialists supported by the Weatherization Assistance Program (WAP), a 42-year-old federal agency that funds air-sealing and insulation work in the homes of low Duct Testing Process: Testing the ducts requires sealing all the openings of a duct system. This includes all supply and return registers. We do this by using large HVAC tape to cover and seal the openings. This process can take some time as we try to create the best seal possible. Our fan is then sealed to the air handler or a large return Blower door tests are performed by certified energy auditors to determine to what degree a home is airtight. A temporary “blower door” equipped with a powerful fan is fitted into the frame What is blower door testing and how does it work? Blower door testing is a test used by HVAC professionals and contractors to determine areas within a building that are responsible for the leaks. It’s a process of depressurizing or, less commonly, pressurizing the building to 50 Pascals, which is equivalent to a 20 MPH wind on all surfaces of The blower door test is conducted as part of the energy assessment of your home. Your contractor may also operate the blower door while performing air sealing (a method known as blower door assisted air sealing), and after to measure and verify the level of air leakage reduction achieved. Simply put, a blower door test is designed to find tiny air leaks and cracks in your home that may be invisible to the naked eye. If your energy bills have gone up recently and you can’t figure out why, blow door testing can identify even the smallest of cracks that could be leaking air. When you and the air leakage testing technician know What Is a Blower Door Test? A blower door test is a test conducted by certified energy auditors to determine how airtight your home is. This diagnostic tool shows how much air is entering or escaping from your home, identifying areas in need of air sealing. How Does a Blower Door Test Work? A “blower door,” comprised of a powerful fan and .

how does a blower door test work