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Keystoker Warm Air Coal Furnaces
Keystoker Warm Air Coal Furnaces

The Keystoker series of furnaces are automatic, efficient, and clean coal burning heaters. There are various heat outputs depending on the model, with the most powerful models being suited towards heating commercial buildings. These coal burning furnaces use anthracite coal to help produce a hotter, and cleaner burning combustion. And with the built in patented designs that increase efficiency and clean burning even further, these truly unique furnaces stand above the competition, and for a lower price!
Price: $8,185.00

Price with Selected Options: $8,185.00

Product Code: KEYFURN


Optional Accessories:
Water Heater Coil [Add $518.00]

Product Description Technical Specs Extended Information and Videos
The Keystoker series of warm air coal furnaces provide you with an efficient, clean burning and economical product. You can select a model to fulfill nearly any heating need, including for commercial buildings. With the inclusion of a 5-year limited warranty, you can take comfort in the reliability of your American made coal heater.

In this series of Keystoker coal furnaces, a patented flat grate design is incorporated which allows the furnace to have a deeper firebox. With the deeper firebox, hotter temperatures are achieved so that more heat can be distributed throughout your house, as well as creating a more efficient and clean burning combustion. Featuring another patented design, the built in heat exchange forces all heated gases to the bottom of the furnace, where it is then pushed back up through two 4" pipes, allowing the convection blower to force hot air out of the stove. This produces more even more heat to be used in heating your home or building. These clean coal furnaces use anthracite coal (in either buckwheat or rice sizes) that can save you money (compared to other fuels such as oil and gas) as well as help produce a cleaner combustion so that your carbon footprint is minimized. There are also no moving parts in these efficient coal furnaces, which gives these furnaces an extended life time because there are less things to break.

If you purchase one of these fine Keystoker coal furnaces you can not only save money, but you can also heat your home or commercial building using a very clean, and efficient automatic furnace. With the already great value this coal burning furnace has, it is increased even more by the 5-year limited warranty that comes with any model.


  • Patented Flat Grate Design Increases Efficiency And Clean Burning Capability
  • Patented Built In Heat Exchange Increases Efficiency
  • Uses Clean Burning Anthracite Coal (In Either Buckwheat Or Rice Sizes)
  • No Moving Parts In the Firebox Extends the Life Span
  • Made In America!
  • Comes With A 5-Year Limited Warranty

Model Number BTU Output
A-80 125,000
A-150 150,000
A-250 250,000
A-350 350,000
A-450 450,000

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