Air Tightness Testing: Home Performance for HVAC Pros

Presented by:   Sam Myers   

When homeowners have comfort complaints, an HVAC contractor usually gets a phone call. But what if the HVAC system isn’t the root of the problem? What if the problem lies within the building enclosure? This is often the case when we see complaints related to hot or cold rooms, high humidity, or high energy consumption. HVAC contractors who replace or adjust the mechanical equipment without first diagnosing the source of the issue often get blamed for not solving the problem. In this presentation, we’ll show you how to do some preliminary testing to determine if the building enclosure is a source of comfort issues. This ability allows technicians to fully remedy clients’ needs and build trust by educating homeowners on the relationship between the HVAC system and the rest of the house. Fully evaluating the building enclosure’s behavior also allows mechanical designers to create more accurate load calculations. This increases the chances of creating more comfortable living spaces and happier clients. In this session, we’ll have equipment set up to do full demonstrations of blower door and duct air leakage tests. The technology has evolved quite a bit over the years, so we'll cover what's new and interesting. Learning objectives: 1. Attendees will gain an understanding of building science principles that contribute to comfort problems. 2. Attendees will learn how air tightness tests are conducted on a home and how air infiltration contributes to home comfort, energy, and indoor air quality issues. 3. Attendees will see a full demonstration of various diagnostic tests to locate issues in a home.