Outdoor Wood Furnaces


Central Boiler Classic

Central Boiler CL 5036

The Central Boiler CL 5036 is designed for average sized homes, and attached garages up to 5000 square feet depending on the efficiency of your buildings. All Central Boiler Outdoor Wood Furnace models are designed with high efficiency fireboxes, using a Central Boiler, Inc exclusive, RippleTop* construction, and water cooled HeatLock Baffle*. The waterproof urethane insulation keeps the heat in, and industrial siding means a long-lasting alternative heat source for your home, or building.

After December 31, 2015 - Classic Furnaces will only be available for Non-Residential use.


Door 23" x 23"
Firebox 50" x 36" x 30"
Heat Transfer Area 74 sq. ft.
Weight 1670 lbs
Water Capacity 196 gallons

* Replaces up to 250 gallons of fuel oil per month

Classic Model Features
  1. Vent Cap: Design eliminates evaporation.
  2. High Capacity Water Jacket: Receives multiple tests to ensure welding integrity. Certified high quality steel used - no mixed metals.
  3. Ripple Top ® Design: For increased heat transfer area and lower maintenance.
  4. Large, Insulated Cast-Iron Door: Ergonomically designed with a large door for easy loading. Door is insulated for maximum efficiency. Door parts are powder coated for increased paint durability.
  5. Automatic Draft Control: Thermostatically controls water temperature in system.
  6. Skid Base Framework: Makes installation easy with or without cement foundation. Only the CL 7260 and Pallet Burner require a slab.
  7. Welded Steel Framework: Heavy-gauge framework engineered for enhanced strength of side panels and roof.
  8. Insulated Chimney: The chimney is a type HT listed factory-built chimney for wood burning appliances. Two 4-foot chimney sections standard.
  9. Rear Exhaust Outlet: Increases efficiency. Eliminates leaks and corrosion that competitors experience from chimneys that exit through the roof. Designed for easy inspection. Reduces heat loss by over 50%.
  10. Water-Filled HeatLock Baffle™; Creates secondary combustion area. Traps heat in firebox - will not warp or burn out with extreme heat.
  11. Urethane Foam Insulation: Insulation is sprayed on and forms a 100% airtight seal around the water jacket.
  12. Rectangular Firebox: Engineered with stay pins- will not collapse like round designs can.
  13. Ash Pan: 3/8" thick, formed ash pan is durable and easy to clean.
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Why You Should Choose The Central Boiler Classic® Outdoor Wood Furnace?

It’s an alternative that eliminates the problems and increases the advantages of wood heat. It’s a choice that can improve your family’s living environment and standard of living while eliminating the fire hazards and time-consuming chore of tending a traditional wood stove.

The Central Boiler Classic outdoor wood furnace can heat 100% of your home and hot water. By virtually eliminating your heating costs, the Classic can often pay for itself in the first two years of use. Over a ten year period, a homeowner or business may save $20,000 to $100,000 or more in heating costs. And generally the Classic uses 25% to 70% less wood compared to traditional wood furnaces or other brands of outdoor wood furnaces.

The Classic saves you time and means less work because it burns larger pieces of wood. There’s less splitting which significantly reduces the time you spend preparing the wood. The large firebox is designed for easy loading of wood and removal of ash.

The Classic is beneficial for the environment because burning wood is natural. Wood is a totally renewable resource and, when burned, results in no net increases in carbon dioxide. On the other hand, fossil fuels when burned, release carbon dioxide which would otherwise be trapped in the earth. The burning of fossil fuels causes a net increase in carbon dioxide which is believed to be responsible for the heat trapping greenhouse effect.

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