The blower door allows us to find out how much air is moving through the buildingā€™s envelope when a house is either pressurized or depressurized. Opening, closing, or sealing the ā€œplanned openingsā€ such as doors, windows, ducts, and vents in the air control layer will have an effect on the blower door test results.
Marshall Insulation offers comprehensive home energy audits, including blower door tests, for Phoenix area homeowners. In addition to diagnosing inefficient air leakage, we can also help you correct problems by sealing and insulating the troublesome areas of your home, including the walls, attic, basement, crawl space and elsewhere.
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 canā€™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

Infiltrometerā„¢ Blower Door Test. All houses should have some air leakage but most leak too much. Symptoms of excessive leakage include uneven temperatures throughout the house, wasted energy, excessive dust, cold drafts, dry air in winter, and clammy air in summer. On the other hand, some homes are too airtight and may have unhealthy indoor air.

Energy Audit-Measuring for Blower Door Testing. Whether you are using equipment from Minneapolis Blower Door, Retrotec, or any other blower door manufacturer, one of the first steps in conducting a blower door test is to measure the homeā€™s floor area, volume, and surface area. Coming up with the floor area is the simplest, length times width. A blower door is a powerful fan that is affixed into a door frame to the exterior and pulls air out of your home. This lowers the inside air pressure and increased outside air pressure flows through any cracks or openings. An energy audit may include using a smoke pencil to air leak detection with a blower door test. Calibrating AZC door actuators. Calibrate the door actuators after making any repairs to the AZC system. To calibrate the door actuators proceed as follows: 1. Turn the ignition on. 2. Set the AZC to automatic. 3. Turn the ignition off. 4. Remove the IOD fuse from the Power Distribution Center. Wait several seconds, and then install the IOD 7WkQk.
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    • how does a blower door test work