Furnace draft hood with outside air supply

Furnace fireplace apparatus having separate combustion and heati

Furnace for solid fuels

Furnace for solid fuels, especially for pellets

Furnace grate

Furnace having water vapor-condensing secondary heat exchanger

Furnace heat exchanger

Furnace heating apparatus

Furnace inducer outlet box assembly

Furnace inducer outlet elbow

Furnace monitoring system

Furnace peep sight

Furnace roof jack with pivoting flashing plate

Furnace vent and intake terminal and blockage safety shut down s

Furnace vent and intake terminal and blockage safety shut down s

Furnace wall lining composition and the use thereof

Furnace with combustion air-cooled draft inducer fan

Furnace with counterflow heat exchange means

Furnace with draft-limiter and ventilation

Furnace with dual use inducer motor