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Wood Master Boilers

Innovative Products, Proven Service

WoodMaster furnaces are manufactured and distributed by Northwest Manufacturing of Red Lake Falls, Minnesota. Since 1989, WoodMaster has built industry-leading outdoor furnaces, continually finding innovative uses of natural energy and alternative fuel sources.

Wood Furnaces - HOW LOW CAN YOUR HOME HEAT COSTS GO?

Heat your whole home for far less money than fuel oil, propane, natural gas and even off-peak electric rates. Calculate your savings. Owners who have scrap wood sources or cut their own basically eliminate their “fuel” costs. Energy savings allow all owners to dramatically lower their heat costs. 

WoodMaster 3300

Plumbed with a single heating loop, is an economical choice when there is no need for multiple hook-ups. The 3300 furnace comfortably heats an average sized home and its hot water.


  • Fire Box 34″ x 32″
  • Door Size 20″ x 21″
  • Thickness: 1/4″ fire drum & water jacket
  • Draft Control: Fan
  • Overall Size 5’2″ x 4’9″ x 7’10″
  • Heating Area 2,000 sq.ft.
  • Total Water Capacity 105 gallons
  • Limited Lifetime Warranty
  • Shipping Weight 1,421 lbs.

$6,175 + Sales Tax + Freight ($350)
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3300
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4400

WoodMaster 4400

Double-plumbed to heat larger homes or home-garage combinations, including hot water. Its larger firebox, larger fuel door and higher Btu output delivers ease of use and maximum efficiency.


  • Fire Box 38″ x 44″
  • Door Size 24″ x 24″
  • Thickness: 1/4″ fire drum & water jacket
  • Draft Control: Fan
  • Overall Size 5’2″ x 5’9″ x 8’1″
  • Heating Area 5,000 sq.ft.
  • Total Water Capacity 117 gallons
  • Limited Lifetime Warranty
  • Shipping Weight 1,809 lbs.

$7,295 + Sales Tax + Freight ($350)

WoodMaster 5500

Double-plumbed and ideal for farms, providing heat for a home and a large shop or midsize commercial building. Increased fuel capacity for higher heat output, plus a larger door (more than two feet by two feet) for easier loading makes this an efficient choice for agricultural applications.


  • Fire Box 50″ x 56″
  • Door Size 27″ x 27″
  • Thickness: 1/4″ fire drum & water jacket
  • Draft Control: Fan
  • Overall Size 6’ x 6’10″ x 8’6″
  • Heating Area 10,000 sq.ft.
  • Total Water Capacity 194 gallons
  • Limited Lifetime Warranty
  • Shipping Weight 2,835 lbs.

$9,495 + Sales Tax + Freight ($350)
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WoodMaster 6500

Plumbed with four heating loops and has double doors for large loads of wood. It’s built to heat commercial buildings or multiple buildings. This model will heat up to 20,000 square feet in any combination of a home, garage or workshop, pool, spa, greenhouse, wood kiln or other structures.


  • Fire Box 60″ x 58″
  • Door Size 44″ x 31″
  • Thickness: 1/4″ fire drum & water jacket
  • Draft Control: Fan
  • Overall Size 7’4″ x 8’10” x 9’3″
  • Heating Area 20,000 sq.ft.
  • Total Water Capacity 487 gallons
  • Limited Lifetime Warranty
  • Shipping Weight 3,742 lbs.

$16,295 + Sales Tax + Freight ($350)

Introducing the New CleanFire Series

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