Small but mighty, the C150 outdoor coal furnace incorporates all the workmanship and quality of a Heatmasterss furnace in a compact package while still heating a comfortably sized building.

C 150 outdoor coal furnace

Firebox
(W” x L” x H”)

24 x 28 x 32

Firebox Door
(W” x H”)

16 x 18

Water Capacity
(US Gallons)

60

Approximate BTUs

150,000

Dimensions
(W” x L” x H”)

36 x 52 x 72

Approx. Heating Space

2,700 sq. ft.*

*Well-insulated house.

The C250 has that bit of extra capacity for larger homes or out buildings coupled with all the design, efficiency and quality that Heatmasterss customers have come to expect.

C 250 outdoor coal furnace

Firebox
(W” x L” x H”)

31 x 34 x 38

Firebox Door
(W” x H”)

20 x 20

Water Capacity
(US Gallons)

125

Approximate BTUs

250,000

Dimensions
(W” x L” x H”)

49 x 56 x 80

Approx. Heating Space

5,000 sq. ft.*

*Well-insulated house.

Our C375 furnace is a comfortable fit for adding a shop or shed with it’s 7,000 square foot heating capacity. A very flexible solution.

C 375 outdoor coal furnace

Firebox
(W” x L” x H”)

34 x 46 x 40

Firebox Door
(W” x H”)

24 x 24

Water Capacity
(US Gallons)

180

Approximate BTUs

375,000

Dimensions
(W” x L” x H”)

49 x 70 x 88

Approx. Heating Space

7,000 sq. ft.*

*Well-insulated house.

The large capacity of the C500 makes it ideal for heavy duty heating. Make the most of your coal supply with this powerful unit.

C 500 outdoor coal furnace

Firebox
(W” x L” x H”)

34 x 56 x 42

Firebox Door
(W” x H”)

24 x 24

Water Capacity
(US Gallons)

230

Approximate BTUs

500,000

Dimensions
(W” x L” x H”)

50 x 82 x 90

Approx. Heating Space

10,000 sq. ft.*

*Well-insulated house.

The largest unit we make is ready for anything. Four sets of feeds on the back make it a natural to heat multiple structures with ease.

Large coal burning furnace

Firebox
(W” x L” x H”)

52 x 60 x 52

Firebox Door
(W” x H”)

42 x 30

Water Capacity
(US Gallons)

555

Approximate BTUs

800,000

Dimensions
(W” x L” x H”)

82 x 98 x 100

Approx. Heating Space

20,000 sq. ft.*

*Well-insulated building.

Comfortable Coal Heat

A new design for our outdoor coal furnace, the C Series provides quality workmanship and materials with a design built for performance and efficiency. They work with almost any existing heating system and follow the HeatMasterss  standard for quality. Although they are very cost-effective, no shortcuts in quality were made in the production of these units.

Built for Coal, Built to Last

  • 409 Stainless Steel – Titanium enhanced and corrosion resistant, it is the only product that can provide the right blend of longevity, heat transfer and other critical traits that meet the HeatMasterSS standard of excellence.
  • Heatmasterss warranty – We back each furnace with our best-in-industry Lifetime Limited Warranty which is twice as long as the leading mild steel competitor. It confirms our confidence in our products.
  • Powder coat finish – Far more durable than paint and environmentally friendly.
  • Rounded firebox – The rounded design gives the firebox more strength with fewer welds, reducing the risks of cracks and leaks. The deep firebox of the C Series also works particularly well for an outdoor coal furnace.
  • ISO 9001 Certified – HeatMasterSS furnaces are built to the very highest manufacturing standards, employing top notch design and engineering.
  • Heavy duty multi-layer insulation

Easy for You

  • Shaker grates and removable ash pan make cleaning a breeze. Just shake the grates and pull out the ash pan to remove ash.
  • The forced air fan pushes air through the grates at the bottom of the firebox, ideal for coal burning and fast heat recovery.
  • Easy access hinged rear door – The insulated rear door is built with a unique hinge design which allows for easy access to the rear of the furnace and quick and easy removal of the door if required without the use of tools or hardware.
  • Safe easy-to-use dual firebox door latch – Our carefully designed latch catches the door so it doesn’t swing completely open and expose the user to excessive heat.

What does it mean for you? A more comfortable outdoor coal burning experience.

High Efficiency 

Although the grated design creates a very high firebox temperature, the triple heat exchange pass flue dumps this heat into the water jacket before the exhaust exits the furnace. This reduces fuel consumption by 20-30% and eliminates spark or flame from the chimney. This baffle system was also designed to minimize ash buildup, saving you time and effort.

The C800 model uses a double pass exhaust.

 

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