The Woodchuck Add-on furnace line can eliminate the unpleasantries of in-home woodburning. The Woodchuck is usually placed next to your present Central Heating unit instead of the main living area of your home. This means NO firewood, dirt, or bark to clean up, or hot surfaces to guard from small children. Woodchuck offers the comfort of luxurious, even heat distributed throughout your home. The cost of oil and gas DOES NOT mean you must abandon or replace the central heating system designed for your home. After all, it's the oil and gas consumption we want to reduce, not the system.