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.
Combustion Appliance Zone (CAZ) Testing Description Guide describing how to conduct combustion appliance zone testing.
Combustion Furnaces Description Guide describing combustion furnaces with selection and installation guidance.
Condensing Boilers Description Guide describing condensing boilers and hot water heat distribution systems used for home heating.
Direct Vent Equipment Description Guide describing categories of direct-vent combustion space- and water-heating equipment and combustion safety testing.
Fireplaces and Wood Stoves Have Proper Ventilation Description Guide describing how to provide combustion air for fireplaces and how to test fireplaces for combustion safety.
Gas-Fired Boilers Description Guide describing gas-fired boilers and hot water heat distribution systems used for home heating.
Gas-Fired Tankless Water Heaters Description Guide describing the installation of a tankless hot water heater to provide domestic hot water that is heated on demand without the standby losses associated with tank storage water heaters.
Oil-Fired Boilers Description Guide describing oil-fired boilers and hot water heat distribution systems used for home heating.
Pre-Retrofit Assessment of Combustion Appliances Description Information guide describing things to consider before attempting retrofits including any combustion appliances, or that may affect them.
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.
Unvented Combustion Appliances Description Guide describing how to properly ventilate un-vented combustion appliances such as sealed fireplaces.