Great prices and fast shipping. Shop online today. 1800 837 837. sales@test-equipment.com.au. Industrial Test Equipment; Blower Door Testers Blog Posts. Air infiltration can be determined with blower door test, otherwise it's a best guess. Air exchange is usually considered in an hvac system and is different from heat loss/gain. hughw | May 15, 2019 10:35pm | #15 The best testing systems designed specifically for testing leakage and checking ductwork for code compliance and energy rating. This Kit includes the TEC Minneapolis Blower Door and the TEC Minneapolis Duct Blaster System with both the DG-1000 and DG-8 Digital Gauges. Minneapolis Blower Door System For the last 30 years, energy raters have been using blower doors to determine a building’s leakiness. The results of a blower-door test — reported as infiltration airflow (in cfm) at a pressure difference of 50 Pascals — usually reveal how tight a building is, but not the location of any leaks. Importantly, we will not be measuring air flow through the Blower Door fan during this test procedure. Refer to your Blower Door manual for complete instructions on Blower Door system installation. 7.1.a Building Pressure Measurements: During the test, you will need to monitor the change in building pressure caused by the Blower Door system. l0icg.