Furnaces Historical Data
Year-to-date total shipments by product, visualized in twenty-year charts and tables
Gas Warm Air Furnaces
- are self-contained gas-burning appliances for heating air by transfer of heat of combustion through metal to the air; and
- designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location.
Oil Warm Air Furnaces
- are self-contained oil-burning appliances for heating air by transfer of heat of combustion through metal to the air; and
- designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location.
