Models Available Was Price Quantities
Natural Draft      
 1,500 sq. ft.  $4,127  $2,899  2 Available
 3,500 sq. ft.  $4,727  $3,499  16 Available
 6,000 sq. ft.  $5,327  $4,299  30 Available
 10,000 sq. ft.  $8,427  $7,299  3 Available
 3,500 sq. ft. $5,927 $4,699  3 Available
 6,000 sq. ft. $6,527 $5,499  3 Available
Top Loaders      
 15,000 sq. ft.  $13,500  $9,500  3 Available
 30,000 sq. ft.  $42,000  $28,500  2 Available




At Ridgewood Stove, we strive to be different from other outdoor furnace companies. Our product is simply a cut above. Our most popular burning furnace features a 500 gallon propane tank that has been refurbished to serve as a firebox. By doing this, we save our customers nearly $1,000 in new material and labor in comparison to conventional outdoor boilers. Propane tanks are 5/16” thick, one of the thickest fireboxes available! The tanks are rated for over 215 PSI, which is way more than needed. It is well known that the strongest structural design is round and the weakest is square or rectangular. This pertains to boilers as well. For longevity and strength our propane tank uses this round boiler design. Round designs have fewer welds and this is very important. Square or rectangular designs with many welds and faceted corners, could be problematic. Our water jacket is a round design as well and is 3/16" thick. The jacket is insulated with spray foam for greater efficiency; and it completly surrounds the firebox. The larger outdoor stove has a large steel 24” x 24” door and is insulated with 2200 degree ceramic fiber insulation. The chimney is 8' schedule 40 steel, 5/16” thick. Welds are 100% penetration. These are some of the heaviest built outdoor furnaces available - anywhere!

Contact us today if you are interested in learning more about an outdoor furnace option. Outdoor furnaces are ideal for both residential and commercial applications. We look forward to helping you select the right furnace model for your needs.

  • How It Heats?
  • Daily Operations
  • Corrosion

The Ridgewood outdoor furnace is a natural draft system.  It burns organic fuel and heats the water that is in the water jacket.  The furnace water jacket completely surrounds the firebox.  Water is pumped through an insulated line that is buried in the ground and attaches to a indoor furnace coil that is mounted in the duct work of your home.  When your home calls for heat, only the furnace blower turns on, blowing air through the furnace coil and heating your house with the heat created in your outdoor wood stove

Everyday, before you load your outdoor stove, you will want to pull the ash and coal pile to the front of your firebox.  Make it into a heaping pile, then load your organic fuel on and behind the coal pile.  The fire will burn through the coal pile and into the fresh organic fuel, burning coal to ash much better.

Another benefit of raking ashes forward each day is that it will make it easier when you need to empty the ashes, ever 4-6 weeks.  The ashes will already be in the front, and more of the firebox is available for heat transfer to the water jacket.  This will make your outdoor stove work faster and burn less fuel!  If you allow your outside furnace firebox to fill half way up with ashes, you will minimize the heat transfer area and will have a tough time finding room for wood.

The Ridgewood Stove Outdoor Furnace is made out of mild steel, and you know mild steel left untreated will corrode.  We use Sodium Nitrate for corrosion protection.  Basically, Sodium Nitrate removes oxygen, and without oxygen there will be no corrosion.

We maintain the levels of Sodium Nitrate by requesting one water sample, from the water jacket, per year.  The test is free, we are checking the dilution of Sodium Nitrate so we can let you know when you need more.  On average you will need to add half a gallon per year, which will cost you about $48.00.