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Direct Vent Equipment

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

Direct vent appliance installed

A direct-vent sealed-combustion furnace has dedicated pipes for combustion air and exhaust

Publication Date

Thu, 02/07/2013 - 12:00

Furnaces, boilers, and water heaters located within the home’s pressure boundary are mechanically drafted or direct-vented

Because flue temperatures are cool, intake and exhaust ducts on a Category 4 direct-vent sealed-combustion condensing furnace can be made of PVC

Publication Date

Thu, 02/07/2013 - 12:00

Combustion Furnaces

Guide describing combustion furnaces with selection and installation guidance.

Pre-Retrofit Assessment of Existing HVAC Systems

Information guide describing considerations for before retrofitting HVAC systems, retrofit scope considerations, and HVAC system replacement options.

Thermostatic Radiator Valves on Steam Heating Systems

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