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
(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...
by John Krigger | Jan 21, 2022
(1 CEU) Ducts can be a major energy-waster. This lesson presents an outline and overview of duct energy-efficiency problems. Ducted airflow, duct air leakage, duct heat transmission, and where the ducts are installed all affect the energy efficiency of forced-air HVAC...
by John Krigger | Jan 14, 2022
(5.0 CEUs) Duct air leakage is one of the most challenging energy wasters that energy specialists strive to reduce. Like building air leakage, duct air leakage is difficult to measure. This course discusses two distinct ways of evaluating or measuring duct leakage:...
by John Krigger | Jan 14, 2022
(8.5 CEU) Blower door testing is an important skill for reducing air leakage in buildings. Blower doors give you an initial measurement of the leakiness of a building so you can budget the appropriate time and money for air sealing. During air sealing, workers can...
