A furnace is a device used for high-temperature heating. The name derives from Latin word fornax, which means oven. The heat energy to fuel a furnace may be supplied directly by fuel combustion, by electricity such as the electric arc furnace, or through induction heating in induction furnaces.
In American English and Canadian English usage, the term furnace refers to the household heating systems based upon a central furnace, otherwise known either as a boiler, or a heater in British English. Furnace may also be a synonym for kiln, a device used in the production of ceramics.
In British English, a furnace is an industrial furnace used for many things, such as the extraction of metal from ore (smelting) or in oil refineries and other chemical plants, for example as the heat source for fractional distillation columns. The term furnace can also refer to a direct fired heater, used in boiler applications in chemical industries or for providing heat to chemical reactions for processes like cracking, and is part of the standard English names for many metallurgical furnaces worldwide.

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  1. Ruger Rich


    I've got a gas furnace acting up. I've done many of the logical things to the extent of my knowledge. So I guess it's time to call a tech in. Any of you folks have a good experience recently with gas furnace repair person and like to share with me, I would most appreciate that. I live in Milwaukie.
  2. Tony617

    Furnace and A/C replaced

    I had a new Bryant furnace and A/C units put in yesterday. It replaced the original Lennox furnace that was installed by the builder of our home. We added a Carrier A/C two years after we moved in. We had the option of a Lennox A/C but decided on a Carrier unit since was using a less harmful...
  3. etrain16

    Looking for Some Advice/Info: HVAC and Dishwasher for Struggling Family

    Question for the forum: My wife has a friend who is undergoing some issues and is facing some big expenses with limited means. They are 4 generations of girls in the same house (great-grandmother, grandmother, mother and 11-yo daughter) with no men around to help out. I just learned their...
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