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.
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