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How to Properly Install and Maintain an Outdoor Wood Burner Outdoor wood burners are commonly called wood boilers. They resemble small sheds with a short smokestack. They are heated by water, or a mix of water and antifreeze, which is then circulated throughout your house. When used in conjunction with dry wood and EPA-approved outdoor boilers, they can provide an environmentally friendly alternative to fossil heating. They still produce plenty of smoke. Energy Efficiency Since the begi