The ThermoPEX insulated pipe system is designed to maximize the efficiency of outdoor wood furnaces by transferring more heat from the furnace to the building(s) being heated. The PEX supply and ...

A traditional outdoor wood boiler has a large firebox surrounded by a water jacket in which up to a few hundred gallons of water are heated. This hot water is piped into the house through a buried ...

For those who want to burn cordwood, modern wood-gasification boilers offer mid-80 percent steady-state combustion efficiencies and full-cycle efficiencies in the 70-75 percent range. This is much ...