Continuously Operating Ventilation and Exhaust Fans Description Guide describing how to install continuously operating exhaust fans.
Bathroom Exhaust Fans Description Guide describing how to install a bathroom exhaust fan to remove excess moisture.
Back-Draft Dampers at Shared Common Exhaust Duct Description Guide describing how to install back-draft dampers in exhaust fans to make a shared duct possible.
Pre-Retrofit Assessment of Existing HVAC Systems Description Information guide describing considerations for before retrofitting HVAC systems, retrofit scope considerations, and HVAC system replacement options.
Air Sealing the Air Handler Closet Description Guide describing the repair and reconfiguration of the air handler closet and platform when replacing the air handler.
Compact Air Distribution Description Guide describing design and installation of compact duct systems for central heating and cooling systems.
Whole-House Dehumidification Description Guide describing options for adding dehumidification equipment to a home to maintain indoor relative humidity below 60%.
Direct Vent Equipment Description Guide describing categories of direct-vent combustion space- and water-heating equipment and combustion safety testing.
Combustion Furnaces Description Guide describing combustion furnaces with selection and installation guidance.