by John Krigger | Apr 1, 2022
(0.7 CEU; 35 minutes) This 10 minute video explains how to use manometers during blower door tests to find clues about the performance of air barriers. We call the tests contained in this video: simple pressure diagnostics. Find your reading assignment under the...
by John Krigger | Mar 31, 2022
(0.7 CEU; 45 minutes) Building pressures cause the infiltration of outdoor air and the exfiltration of indoor air. Unbalanced airflow between supply and return ducts can cause positive pressures in some rooms and negative pressures in others. Duct air leakage in...
by John Krigger | Jan 21, 2022
(1.5 CEUs) The pressure pan measures duct pressures during a blower door test. If you measure pressure at a duct register during a blower door test, that indicates that outdoor air is leaking into or out of the building. Pressure-pan testing isn’t a quantitative...
