Simple Pressure Diagnostics (Mini Course)

(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...

Air Barrier Basics (Mini Course)

(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...

Finding Major Air Leaks (Mini Course)

(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...

Duct Energy Efficiency (Mini Course)

(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...

Duct Airtightness Testing (Short Course)

(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:...