Retrotec Level 1 Residential Building Training (Online)

Retrotec Level 1: Residential Building Training An online residential air leakage course focused on building science, from Retrotec. It's the same content as Level 1 of the Levels 1–3 Large Building program, available in imperial or metric units. What You'll Learn Air leakage and the forces that drive it The air barrier and how to find it Duct leakage basics Blower door equipment and setup Testing and reporting Format: online, self-paced and milestone-based. The course never expires.