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Forge 1500


$8,345  MSRP


Door - 18"W x 18"H

Firebox - 40" x 30" x 26"

Heat Transfer Area - 52 sq ft

Ash Cleanout Door - 19"W x 11"H

Grate Size - 6" x 16-7/8"

Water Capacity - 150 gal.

Weight - 1,750 lbs

Supply/Return Ports - 1 set of 1-1/4" supply and return ports (can be configured for two pumps)

Btu Rating - 150,000 Btu/hr


NOTE: Specifications are subject to change without notice. 





A Cleaner Way to Heat with Coal. Both the Forge 3500 and 1500 now comes standard with Titanium enhanced Stainless Steel.


Forge 3500


$10,470  MSRP


Door - 18"W x 18"H

Firebox - 50" x 36" x 30"

Heat Transfer Area - 74 sq ft

Ash Cleanout Door - 19"W x 11"H

Grate Size - 6" x 16-7/8"

Water Capacity - 210 gal.

Weight - 2,150 lbs

Supply/Return Ports - 1 set of 1-1/4" supply and return ports; 1 set of 3/4" supply and return ports

Btu Rating - 350,000 Btu/hr


NOTE: Specifications are subject to change without notice. 

Forge 6000


Coming soon

  • Heat Multiple Buildings - Heating multiple buildings is easy. The Forge 3500 has one set of 1-1/4” supply and return ports and one set of 3/4” supply and return ports.

  • Convenient Operation - Loading coal is easy with the large firebox door. Ergonomically designed, the firebox door is insulated and easy to open and close. Heavy-duty shaker grate, conveniently operated by handle on side of the furnace, allows ash to fall below into the ash collection area. Ash removal is easy.

  • Burn Less Coal - A hallmark of Central Boiler furnaces for over 30 years, spray-on urethane is the ultimate airtight, waterproof insulation that locks the heat in to reduce coal usage, even at temperatures of -35˚F or colder. It provides 2-3 times the effective R-value of conventional fiberglass batt insulation.

  • Ultimate Control - The FireStar™ II electronic controller monitors all functions of the furnace and can store and share operational data. The controller’s technology optimizes the combustion process by automatically adjusting the fan-forced air for a cleaner and more efficient burn. The Forge FireStar combustion controller features integrated wi-fi.

  • Safety Tested/Listed

  • 5-Year Warranty Available

  • Made in the U.S.A.

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