Outdoor Wood Pellet or Corn Burning Furnaces
Outdoor wood pellet or corn burning furnaces arrived on the scene more recently. First wood pellet stoves became available in the mid 1970's, in response to the 1973 oil crisis and the resulting increase in cost of petroleum products in general, and heating oil in particular. The wood pellets are made of compressed wood waste products, like shavings or sawdust. Thus they are a green fuel that is carbon neutral in its use. See the article,
'Features and Options of the Best Wood Pellet Stoves,' for more information about wood pellet stoves. Corn burning stoves arrived about ten to fifteen years after wood pellet stoves, introducing an annually renewable fuel.
Wood pellet furnaces and corn burning furnaces soon came on the market as well. Wood pellet and corn furnaces and stoves burn their fuel much more efficiently and completely than a typical outdoor wood burning furnace. Thus it isn't as necessary to locate the burner outside. Both indoor and outdoor wood pellet or corn burning furnaces are available. Two examples of outdoor wood pellet or corn burning furnaces are the WoodMaster by Northwest Manufacturing, Inc, shown at the left, and the Maxim from Central Boiler, Inc, shown at the right.
The WoodMaster furnace shown has a heating capacity of up to 100,000 Btu/hr and can burn wood pellets, corn, or other small grains. A 175,000 Btu/hr model is also available. Central Boiler has Maxim models with 175.000 and 250,000 Btu/hr. Both can burn wood pellets or corn. (Click on the links to see more detailed information from the manufacturers.)