The Ultimate Outdoor Furnace wood boiler and furnace season never ends. Tour our product lines and get information while meeting Les Radcliffe at one of our 2019 season events. Get your questions answered by the #UltimateOutdoorFurnace expert himself. Join Us for the 2019 #UltimateEvents including the 41th #MidwestFarmShow to Explore the Latest Farm and Dairy Equipment including Our Ultimate Outdoor Wood Furnaces, January 9th & 10th,  2019 @ Lacrosse Center 9:00 am - 3:30 pm

To get perfect combustion the right amounts of fuel(wood), heat, and oxygen (air) need to get thoroughly mixed with each other.

In 2014 propane prices soared to near $5.00 per gallon. I decided it was time to look at outdoor furnaces and looked at many brands and models, finally narrowing my decision to the Polar G-Class or the Portage and Main Ultimizer. My final choice was the G-Class because I believe in using seasoned wood. All gasification furnaces need seasoned wood for optimum performance. SEASONED WOOD -VS- ANY WOOD Where as all outdoor furnaces perform better with seasoned wood, the Ultimizer

This is exactly what happens at the heart of every G-CLASS Furnace inside the VOR-TECH combustion chamber. Preheated secondary air (oxygen) is mixed with the hot unburned smoke and gases (fuel) as they flow down into the VOR-TECH chamber from the primary chamber above. Incoming Gas Flow... The incoming gas flow is angled to encourage a swirling vortex inside the cylindrical chamber. The resulting 1700 - 2000°F vortex mixes the unburned smoke with the preheated secondary