Method and a device for the generation of hot air

Method and apparatus for adjusting airflow in draft inducer

Method and apparatus for burning solid fuels in a combustion cha

Method and apparatus for controlling a liquid fuel space heater

Method and apparatus for preventing cold spot corrosion in induc

Method and apparatus for preventing splashing condensate from ac

Method for providing variable output gas-fired furnace with a co

Method of connecting a heat exchanger to a forced air furnace an

Method of operating a natural gas furnace with propane

Methods and apparatus for ductlessly distributing and circulatin

Mobile heater

Mobile home furnace

Modulair air heater

Modular burner/blower system and method

Modular solid fuel furnace system

Modulating furnace having a low stage with an improved fuel...

Modulating furnace having improved low stage characteristics

Modulating furnace with two-speed draft inducer

Modulating gas valve furnace control method

Multi oil furnace