Guide describing sizing methods for cold climate heat pumps.

Guide describing ductless heat pump systems used for single-room or whole-house heating and cooling.

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 sizing and installation of foundation heat exchangers, which can be connected to a heat pump system used for spacing conditioning as well as domestic water heating.

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

Guide describing best practices for testing and commissioning heat pump systems using smart tools during and after installation.

A guide describing how to elevate and secure HVAC equipment for protection against floods, earthquakes, and high winds.

Guide describing the split system heat pumps used for central forced air heating and cooling.