Guides A-Z

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 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.