by John Krigger | Feb 9, 2022
(1.5 CEUs) What we call “pressure diagnostics” is a group of tests and observations that help us diagnose and locate air leaks. We do pressure diagnostics during a blower door test. We take measurements of pressure and airflow, which help us to know how leaky a...
by John Krigger | Jan 21, 2022
(1.5 CEUs) This lesson explains how to do major duct repair and duct air sealing. For example, sometimes the furnace and the main duct aren’t well connected, causing the worst air leak in the home. This course explores how to fix this furnace-duct problem and...
by John Krigger | Jan 21, 2022
(1.5 CEUs) This lesson begins by talking about duct-leakage standards and duct leakage measurement. You’ll learn where to find the duct leaks in this lesson. Also, this lesson shows you the methods and materials that duct sealers used to seal ducts. We then...
by John Krigger | Jan 21, 2022
(1.5 CEU) Air barriers are an essential part of the building envelope of an energy-efficient building, but the need for air barriers in buildings isn’t well known. This Air Barrier Basics lesson covers air-barrier principles and typical air-barrier installation...
by John Krigger | Jan 21, 2022
(2.0 CEUs) A variety of common building characteristics create air leaks. In many buildings, air leakage is one of the largest sources of heat loss in winter and heat gain in summer. Air-leaks can be difficult to find, but they’re often inexpensive to fix. This lesson...
