The furnace works by burning wood to heat water. The furnace works by burning wood. Electronics Cars Fashion Collectibles More Ebay Wood Burning Furnace Vintage Stoves Outdoor Wood Furnace The insulated underground pipe enters your home and connects to your water heater through a heat exchanger. How a wood furnace works . The furnace works by burning wood to heat water. A wood burning stove works by: They do not rely on petroleum. The heated water is circulated through insulated underground pipes called insulated pex pipe to the buildings being heated. A water jacket surrounds the furnace firebox and heat exchanger. Likewise, people ask, how efficient are. How does a wood burning furnace work? The insulated underground pipe enters your home and. The flue gases released from combustion boilers are at a much lower temperature since they have transferred up to 95% of the heat into the water. The heated water is circulated through insulated underground pipes ...