Technician’s Guide & Workbook for Duct Diagnostic & Repair


This Guide & Workbook is intended to provide a working knowledge of heating and cooling duct systems, an understanding of the major issues concerning efficiency, comfort, health, safety; and practical tips on diagnostics, installation and repair of duct systems.

This Guide & Workbook starts off with the basics and explains the operation of a duct system, the impacts of air leakage from ducts, and focuses on how technicians can make improvements that will result in: Lowering of operating expenses; Improving occupant comfort; Protection of occupant health and safety; and Improvements to building envelope durability.