Fuel stoker and furnace

Fuel-fired condensing type forced air heating furnace

Fuel-fired furnace with combustion air-cooled draft inducer...

Fuel-fired furnace with self-cooling draft inducer fan

Fuel-operated heating system, particularly an auxiliary heater f

Furnace air handler blower housing with an enlarged air...

Furnace and cold air return systems

Furnace blower with double sided impeller

Furnace condensate trap

Furnace damper means

Furnace door attachment

Furnace heat exchanger

Furnace inducer outlet elbow

Furnace with combustion air-cooled draft inducer fan

Furnace with counterflow heat exchange means

Furnace with dual use inducer motor

Furnace with heat exchanger

Furnace with split heat exchanger