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Guides A-Z

Guide describing repair and reconfiguration of air handler closet and platform when replacing air handler.

Information guide providing background information about air flow in residential buildings.

Guide describing categories of direct-vent combustion space- and water-heating equipment and combustion safety testing.

Information guide describing the use of ECM fan motors in air handlers used for heating, cooling, and ventilation.

Guide describing how to provide combustion air for fireplaces and how to test fireplaces for combustion safety.

This guide describes the uses, selection process, and specification of high-MERV filters.

Guide describing how to conduct a home performance assessment before beginning retrofit projects in existing homes.

Retrofit guide describing how to assess harmful gasses such as carbon monoxide, sulfur oxides, nitrogen oxides, and soot from existing combustion appliances.

Guide describing how to evaluate existing ventilations systems before performing home upgrades.

Guide describing removal of construction debris from flex ducts and protection of ducts and HVAC equipment during construction to keep them free of dust and debris.

Guide describing how to select and install whole-house ventilation systems for existing homes.

Guide describing additional requirements for HVAC systems in warm-humid climates to operate in a dehumidification mode to maintain indoor relative humidity at or below 60 percent.