Question: Hello, I am interested in some information about outside woodburners if anyone has any experience with them? Info such a price, heating ducts,burn time, how long they last and anything else that might be helpful? Thanks, Don Answer: Most outdoor woodburners are based on Hot Water heat, which can be then transferred to hot air by the use of a heat exchange coil. These units typically do not burn as clean as the new EPA woodstoves since they are exempt from the high efficiency standards. Most outdoor units have very large fireboxes, so be prepared to burn 10-20 cords of wood if you live in a cold climate. Some outdoor units were made poorly and corroded in as little as 4-7 years. I'm sure there are others than last longer, but do your homework before laying out thousands of dollars for one.