Tuesday, July 16, 2024

Keystoker Automatic Warm Air Coal Furnace

Keystoker Automatic Warm Air Coal Furnace

The Keystoker series of automatic coal furnaces provides a powerful and efficient source of heat for residential or commercial buildings.  These coal furnaces utilize anthracite coal as a fuel source to provide a powerful, but clean combustion that is environmentally friendly to burn.  They also have built in features that enhance these furnaces clean burning capabilities and efficiency to give you a valuable heater that stands out from other coal furnaces.

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The Keystoker series of coal furnaces are efficient, clean, and powerful options for any heating need. There are coal furnace models available for every need, whether they be commercial or residential. And with a 5-year warranty, you can take great comfort in the reliability and durability of these American made furnaces.

With a patented flat grate design that gives these furnaces a deeper firebox, a hotter fire can be achieved. The hotter fire not only produces more heat to be used throughout your home, but it also results in a much cleaner and more efficient combustion when compared with other coal furnaces. These coal burning furnaces also feature a patented 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 hotter air out of the furnace and into your home or building. These clean coal furnaces use anthracite coal (in either buckwheat or rice sizes) to make for an even cleaner burning fire that minimizes your carbon footprint while saving you money, thanks to its cheap cost (when compared to other fuels like oil, gas, or even pellets). And with no moving parts in the firebox, the operating life of these efficient coal furnaces is extended greatly because there is simply less that can go wrong.

Purchasing a Keystoker coal furnace will save you money, heat your house or commercial building exceptionally well, and give you an efficient and clean source of heat. This product is backed by Keystoker with a 5-year limited warranty, making this an exceptional and reliable addition to any home or commercial facility.


Models Available

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


Specifications Keystoker Coal Furnaces
Model Number Length x Width Height
A-80 66" x 27" 48"
A-150 78" x 30" 48"
A-250 88" x 36 3/4" 54 1/2"
A-350 94" x 41" 60"
A-450 94" x 41" 66"

Keystoker Automatic Warm Air Coal Furnace

Keystoker Automatic Warm Air Coal Furnace

Please call or email us today!  Specify the model you are interested in and your zip code.

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Freight cost is additional. Please call (406) 300-1776 or email for a complete price quote.  Please specify the model you are interested in and your delivery zip code.

Obadiah's offer's a 20% discount and free shipping on most complete chimney systems. Email our chimney specialists for an exact quote.


Keystoker Automatic Coal Boiler - Overview

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Heat Area (sq.ft.)
Fireplace Specific Options





Cooktop Material

Water Heating Options

Flue Orientation


Venting (Gas Stoves)


Viewing Area

Interior Style