Nature's Comfort Outdoor Boilers

RSI Boilers - Nature's Comfort Authorized Dealer

Outdoor Wood Boilers
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NCB-120 Outdoor Wood Boiler

Coal model $700 extra

The NCB-120 is the smallest boiler that Nature's Comfort makes with an ash drawer.
Draft air enters from the back into under the grates to get a hot clean burn. As with all models that Nature's Comfort builds, it has an easy read stainless steel float gauge.
It is rated to be able to heat up to a 3000 sq ft house with good insulation or 2500 sq ft if also heating domestic hot water.
These ratings are with well seasoned hardwood and just a general reference.
In southern Wisconsin they should be reduced be about 25% with average wood.
Green wood would have further reduce capacity


  • 160,000 BTU
  • Heating Area: Up to 3,000 sqft
  • Unit Size: 65L x 440W x 87H
  • Weight: 1446 lbs
  • Water Jacket: 120 gal, 10 gauge (3/16″)
  • Firebox: 15cu/ft square 24”W x 31.5”H x 36D
  • Fuel Door: 21.5"W x 22"H
  • Blower: 148cfm
*Now comes with colored ribbed metal on sides and black front and back like 175 and larger models
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Please Contact us for more info or with any questions
Philip Howard / RSI
109 Commercial St / PO box 341
Arlington, WI 53911