Guides A-Z

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

Guide describing combustion furnaces with selection and installation guidance.

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

Guide describing the use of electronically commutated motors (ECMs) in HVAC central air handler fans to reduce power consumption compared to a single-stage fan motor.

Guide describing how to upgrade or expand an existing HVAC system.

Guide describing ground-source (geothermal) heat pumps including an overview of technology and guidance on compliance and installation.

Guide describing how to analyze boiler and building performance and install thermostatic radiator valves (TRV) to reduce temperatures in over heated spaces.

Guide describing options for adding dehumidification equipment to a home to maintain indoor relative humidity below 60%.