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2. Furnace (central heating) - Wikipedia

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

   The second category of furnace is the forced-air having atmospheric burner style with a cast-iron or sectional steel heat exchanger. Through the 1950s and 1960s, this style of furnace was used to replace the big, natural draft systems, and was sometimes installed on the existing gravity duct work.

3. Goodman Global - Wikipedia

   en.wikipedia.org/wiki/Goodman_Global

   In October 2016, operations at the new facility ramped up and the first Goodman air conditioner and gas furnace units came off the line. [ 11 ] In 2017, the construction of the huge facility concluded to consolidate Goodman’s HVAC manufacturing, engineering, logistics, and customer support under one, very large 4.1 million square foot roof.

4. Gas heater - Wikipedia

   en.wikipedia.org/wiki/Gas_heater

   A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane, or butane. Indoor household gas heaters can be broadly categorized in one of two ways: flued or non-flued, or vented and unvented .

5. Steam cracking - Wikipedia

   en.wikipedia.org/wiki/Steam_cracking

   This degrades the efficiency of the reactor, so reaction conditions are designed to minimize this. Nonetheless, a steam cracking furnace can usually only run for a few months at a time between de-cokings. Decokes require the furnace to be isolated from the process and then a flow of steam or a steam/air mixture is passed through the furnace coils.

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