Outdoor Wood Furnace for Commercial Applications

The WoodMaster 6500 outdoor wood furnace is plumbed with four heating loops and has double doors for large loads of wood. It’s built to heat multiple buildings. This model will heat up to 20,000 square feet in any combination of office space, workshop, greenhouse, wood kiln or other structures.

25 Year Warranty

A free 25-year limited warranty is available if furnace is registered at the time of purchase.

*In the U.S., this appliance is for non-residential applications only.

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Furnace Specifications

  • Fire Box: 60″ x 58″ – Titanium Stainless Steel
  • Door Size: 44″ x 31″
  • Draft Control: Fan
  • Overall Size: 7’4″ x 8’10” x 9’3″
  • Heating Area: 20,000 sq.ft.
  • Total Water Capacity: 487 gallons
  • Warranty: 25-year Limited Warranty
  • Shipping Weight: 2,987 lbs.



  • Black




No fuels enter the structure to limit smoke, soot, fire hazards and the risk of dangerous carbon monoxide buildup


Designed to deliver maximum Btu for more usable heat with less wood cutting and furnace-filling time

Long Life

The titanium-enhanced stainless steel firebox is impervious to corrosion from high-moisture wood, creosote or condensation

WoodMaster exclusives:

Round chamber design provides optimum internal air movement and water circulation for even heat transfer and more efficient burn. This design also offers:

  • Forty percent fewer seams than a square box, for less chance of cracking or leaking and minimal pitting
  • No dead spots, so creosote doesn’t build up

Digital Electronic Temperature Control (ETC) is one center for operating temperature settings, blower, reset, water level indicator and nightlight in an easy-to-read display.



Outdoor wood furnace maintenance tips:

  • Manage combustion by keep a continuous supply of oxygen and using the proper amount and type (cut, seasoned) of fuel (wood)
  • Properly build fires:
    • Completely open the damper
    • Place paper/kindling over entire bottom of fire box
    • Never use flammable liquids
    • Warm the flue
  • Inspect chimney flue, stovepipe every month
    • Look for cracked liners, missing parts, bird nests or other hazards
  • Clean joints, chimney connectors and flues as necessary
  • Maintain a briskly burning fire to reduce creosote buildup
  • If you do have a chimney fire, inspect and repair weakened parts before restarting furnace
  • Properly, regularly dispose of ashes


Product Manuals

Owners Manual

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