ECM Air Handler Fans Description 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.
Kitchen Exhaust Retrofit Duct Guide Description Guide describing the retrofit of kitchen exhaust systems, including duct sizing and routing considerations.
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.