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2. Furnace (central heating) - Wikipedia

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

   In some areas electrical resistance heating is used, especially where the cost of electricity is low or the primary purpose is for air conditioning. Modern high-efficiency furnaces can be up to 98% efficient and operate without a chimney, with a typical gas furnace being about 80% efficient. [ 1 ]

3. Forced-air gas - Wikipedia

   en.wikipedia.org/wiki/Forced-air_gas

   Older furnaces sometimes relied on gravity instead of a blower to circulate air. [1]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]

4. List of companies with Denver area operations - Wikipedia

   en.wikipedia.org/wiki/List_of_companies_with...

   This page was last edited on 3 December 2024, at 06:56 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

5. American Radiator Company - Wikipedia

   en.wikipedia.org/wiki/American_Radiator_Company

   The factory was acquired by the American Radiator Company in 1898, and a new company established as the Compagnie Nationale de Radiateurs, with a capital of 500,000 francs. Courtot became the managing director of the plant. [17] The company had with low wage costs and fair productivity, resulting in a saving compared to importing products.

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7. Industrial furnace - Wikipedia

   en.wikipedia.org/wiki/Industrial_furnace

   An industrial chamber furnace, used to heat steel billets for open-die forging. An industrial furnace, also known as a direct heater or a direct fired heater, is a device used to provide heat for an industrial process, typically higher than 400 degrees Celsius. [1]