by John Krigger | Apr 5, 2022
(1.5 CEU) An infrared “IR” scanner allows us to see heat transmission, thermal bridging and air leakage in buildings. We usually scan a building from the indoors. We can scan from the outdoors too, at night or at other times when the sun isn’t heating the building’s...
by John Krigger | Apr 2, 2022
(0.5 CEU; 25 minutes) To pursue a low-cost cooling strategy, stop heat gain before it enters the home, and use ventilation and air movement whenever possible. This micro course gives you a summary of the options including: shade trees, window treatments, whole house...
by John Krigger | Apr 1, 2022
(0.5 CEU; 30 minutes) This 10-minute video breaks down the components of summer heat gain’s including solar gains, air leakage, internal gains, and heat transmission. Understanding how our environment heats our buildings during the summer is essential to creating good...
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...
