Combustion Furnaces Description Guide describing combustion furnaces with selection and installation guidance.
Direct Vent Equipment Description Guide describing categories of direct-vent combustion space- and water-heating equipment and combustion safety testing.
Existing HVAC System Upgrade or Expansion Description Guide describing how to upgrade or expand an existing HVAC system.
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.
Whole-House Dehumidification Description Guide describing options for adding dehumidification equipment to a home to maintain indoor relative humidity below 60%.