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2. Forced-air gas - Wikipedia

   en.wikipedia.org/wiki/Forced-air_gas

   Gas-fired forced-air furnaces have a burner in the furnace fueled by natural gas. A blower forces cold air through a heat exchanger and then through duct-work that distributes the hot air through the building. [2] Each room has an outlet from the duct system, often mounted in the floor or low on the wall – some rooms will also have an opening ...

3. Furnace (central heating) - Wikipedia

   en.wikipedia.org/wiki/Furnace_(central_heating)

   Furnace (central heating) An oil furnace. A furnace (American English), referred to as a heater or boiler in British English, is an appliance used to generate heat for all or part of a building. Furnaces are mostly used as a major component of a central heating system. Furnaces are permanently installed to provide heat to an interior space ...

4. Thermostat - Wikipedia

   en.wikipedia.org/wiki/Thermostat

   The power through the thermostat is provided by the heating device and may range from millivolts to 240 volts in common North American construction, and is used to control the heating system either directly (electric baseboard heaters and some electric furnaces) or indirectly (all gas, oil and forced hot water systems).

5. Forced-air - Wikipedia

   en.wikipedia.org/wiki/Forced-air

   Forced-air. A forced-air system includes registers located in individual rooms through which heated air is discharged. A forced-air central heating system is one which uses air as its heat transfer medium. These systems rely on ductwork, vents, and plenums as means of air distribution, separate from the actual heating and air conditioning systems.

6. Napoleon (company) - Wikipedia

   en.wikipedia.org/wiki/Napoleon_(company)

   Website. napoleon.com. Wolf Steel Ltd., better known as Napoleon, is the largest privately-owned manufacturer of fireplaces, grills, and gas furnaces in North America. [2] Based in Barrie, Ontario, Napoleon began in 1976 as a steel fabrication business under the name Wolf Steel Ltd. In 1995, Napoleon was founded after the company diversified ...

7. Annual fuel utilization efficiency - Wikipedia

   en.wikipedia.org/wiki/Annual_fuel_utilization...

   The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few' or 'A'-'F'-'U'-'E') is a thermal efficiency measure of space-heating furnaces and boilers.The AFUE differs from the true 'thermal efficiency' in that it is not a steady-state, peak measure of conversion efficiency, but instead attempts to represent the actual, season-long, average efficiency of that piece of equipment ...