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Nature’s Comfort NCB 400 – Best Outdoor Wood Boiler .menu-item-has-children{ cursor:pointer; }sss

 Top Loading Wood Boiler 


 Machine Top Loading Wood Burning Hydronic Boiler 


 Hyprotherm Top Loading Wood Boiler Furnace from $9264 




 Hyprotherm Top Loading Boiler: Model 534 5 feet long x 3 ft wide x 4 feet tall firebox; Firebox Thickness is ONE HALF INCH! 60 cubic foot wood capacity; will heat 10% more than the one 6 foot long one below (Model 450/633) because this has a one foot deeper firebox.


 Large Machine Loading - Top Loading Furnace! Log burner! 

 COMPARE HYPROTHERM Top Loader to a Tennessee Outdoor Furnace HOSS FURNACE Top Loader - Top Loading Boiler!

 Hyprotherm Top Loading Log Boiler FEATURES:

 Propane and Waste Oil Burner and Wood Top Loader

 Stump Burner 1350L

 Model 1350L (STUMP BURNER) in production before the siding is put on. This boiler is HUGE! BURN and DISPOSE of PALLETS 


 Note the 12" water jacket which give this HUGE 1527 Gallon water capacity. That side loading door gives you a dimension of size because it is 26 1/2" X 26 1/2".  BIGGEST TOP LOADER in the WORLD!

 Forced-Air Top Loader Boiler

 The lid open on the forced-air top loader kiln furnace. 

 These fans have optional external air-cooled motors on them so that they can stay cool and  are not effected by the high temperatures of a kiln dryer. 

 The air temperature is thermostatically controlled. You can easily set the output temperature yourself; easily exceeding the 160F inside wood temperature required by USDA. (Yellow switch shown is temporary test switch for lid)  

 NCB-400-TL Top Loader Wood Boiler from Nature's Comfort 

 NCB-400-TL Specifications

 Outside Wood Boilers | TOP Machine Loading Wood Boiler | Coal Boilers |  Water-less Forced-Air Wood Furnaces |  Used outdoor wood boilers for sale


Best outdoor wood boiler for outside in Canada

Simplicity is the key and every one of Our Boilers ARE SIMPLE and easy to work on!! No circuit boards, no computerized parts, no smart phone hookup; just simple off-the-shelf parts that you can purchase anywhere and you can maintain this furnace and repair it, if need be, yourself!

Nature’s Comfort NCB 400

NCB-400G Wood Gasification Price $10,980

Wood Boiler for commercial applications – anything NON-residential; shop, garage, pool, hot tub, driveway de-ice, walkway de-ice, etc

Nature’s Comfort NCB-400G COAL Boiler

Price $11,640


  • 500,000 BTU
  • Heating Area: Up to 12,000 sq. ft.
  • Unit Size: 85L x 50W x 99H
  • Weight: 2613 lbs, COAL VERSION with cast iron shaker grate system add 250 lbs
  • Water Jacket: 400 gal, 7 gauge (3/16″)
  • Firebox: 40.0 cu/ft (54D x 30W x 36H), 1/4″ thick  (40% BIGGER than the 325 model = less loading!)
  • Fuel Door: 27W x 25.5H
  • Blower: 250 cfm

Download the NCB-400 Wood Boiler Flyer  

Download the NCB-400G Installation Manual  

Please CALL and speak to Ben at 828-683-8055 or write to: Ben@outdoorwoodfurnaceboiler.com?subject=Nature’s_Comfort 

Nature's Comfort Wood Boiler Front Fuel Door
Front Fuel Door
Front Ash Pan
Front Ash Pan
Nature's Comfort Wood Boiler 400G Controls
Rear Controls
Nature's Comfort Wood Boiler 400G Gasification Firebox

Nature’s Comfort Wood Boiler 400G Coal Version – identical to the 325G

       Nature's Comfort Wood Boiler 325G Coal Version
Nature's Comfort Boiler 325G Shaker Grate Controls    Nature's Comfort Boiler 325G Shaker Grate Control Rod    Nature's Comfort Boiler 325G Shaker Grates

This rod above the ash door is the only external visual
difference between the coal and wood boiler; as seen in
the NCB Lineup photo above – far left boiler.

Please CALL and speak to BEN 828-683-8055 or write to:




I have a 5400sqft home and had heating bills of $2,000/month until I purchased a GT-220 High Efficiency Downdraft Gasification Furnace. It’s unbelievable! When running, the only thing I can see is heat shimmer and I can now heat my entire house instead of having to close down portions trying to save money.