Airflow diffuser for use with a forced-air space heater and a fo

Apparatus and method for burning a combustible gas, and a heat e

Apparatus and method for modulating the firing rate of furnace b

Apparatus and method for removing recuperative condensate

Apparatus for supplying heated air to an air system

Apparatus for ultra high energy efficient heating, cooling and d

Appliance combustion chamber

Arrangement of burner and heat exchanger, and air-heating...

Auxiliary heater for vehicles

Auxiliary wood burning furnace

Balancing air device for a heating unit

Bi-loop heat recovery system

Bi-loop heat recovery system for an oil fired furnace

Biomass fueled furnace

Biomass heat exchanger furnace

Biomass heat exchanger furnace

Blower deck for upflow or downflow furnace

Blower mounting arrangement for forced air furnace

Burner for a motor vehicle heater

Burner mounting assembly for gas furnace