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King 40 by Blaze King

Wood Burning Free Standing Stove

At 81% efficiency the King is the most efficient wood stove in the world. This allows you to get the most heat out of your wood to reduce your heating costs. The King has the largest and deepest firebox of any stove on the market and is for serious wood burners. This stove is great for families who live in colder climates, have larger homes or need heat for longer periods of time. You can fit up to 80 lbs. of wood into the King’s 4.35 cu.ft. firebox. That’s equal to 708,275 BTUs of available wood energy. The King can burn for 40+ hours on low or produce a tremendous amount of heat for 12 to 16 hours, depending on your installation and wood type.

Why choose Blaze King for your next freestanding wood stove? Blaze King’s deep fireboxes better contain large loads of wood and also minimize the need for frequent ash removal. All Blaze King stoves produce very fine ash because they extract every last drop of energy from the wood. As a result, you can go for very long periods before you have to empty your stove. The combination of Blaze King’s exclusive thermostat and catalytic combustor technology makes your Blaze King insert one of the most efficient wood stoves in the world, and the proof is in the flue temperatures. Many inserts have flue temperatures of 600-900° F, while Blaze King flue temperatures are between 200-300° F. This means that instead of pumping valuable heat up the flue, Blaze King keeps the heat in your home, saving you money. Plus, Blaze King’s highly efficient stoves will burn up to 33% less wood, so in turn, you cut, stack, load, and clean 33% less.

Most efficient wood stove in the world

Impressive 81% efficiency

Burn for up to 40 hours on low

Fit up to 80 lbs. of wood in the massive firebox

Choose from 3 styles: Parlor Legs, Classic Base, or Ultra Pedestal

Thermostat control (no electricity required)

Add on optional dual fan kit for better heat distribution

10 Year 100% extended warranty

Heating Capacity

Up to 3,000 sq. ft.



Firebox Capacity

4.35 cu. ft.


1.1 g./hr.

EPA 2020 Certified



Metallic Black

Appliance Width 31″
Appliance Height 32-5/8″ – 38-3/8″ (depending on base)
Appliance Depth 30-3/8″
Weight 450 lb.
Cord Wood Max BTU 57,000 BTU’s
Efficiency 81%
Constant Heat Output on High 47,809 BTU/hr. for up to 12 hours
Constant Heat Output on Low 14,313 BTU/hr. for up to 40 hours
Heating Capacity 1,500 – 3,000 sq. ft.
Wood Capacity (hard wood) 80 lb.
Wood Capacity (soft wood) 55 lb.
Average Heating Time 10 – 20 hr.
Potential Burn Time on Low 40 hr.
Emissions 1.1 g./hr.
Firebox Size 4.35 cu. ft.
Flue Size 8″
Glass Viewing Area 17-1/2″ x 10-1/2″
Door Opening 18-1/2″ x 9-3/4″


Ultra Pedestal with Ash Drawer
Parlor Legs (Satin Plated – Black)
Classic Pedestal Base


Painted Door (Black)
Satin or Gold Plated Door
Solid Door


Ash Pan (for Parlor Legs base)
Dual Fan Kit
Rear Heat Shields

See if this product works for you!