Combustion Furnaces Installation and Types
Scope Description International Mechanical Code (IMC) Classification (2009 and 2012) National Fuel Gas Code (NFPA 54) Classification (2012) Category I Furnaces with Induced Draft Fans Category III Furnaces Category IV Furnaces How to Select and Install a Furnace Ensuring Success Climate Considerations ENERGY STAR and DOE Zero Energy Ready Homes have climate-specific criteria for furnace…
