They work by getting hot enough to heat a reserve of water that is surrounding the heat box of the wood stove. This water is pushed into your house through a special type of hosing. Your existing furnace will need to have a heat exchange added to it. This unit will make it possible for boiling water to be changed to a heat source that can actually be pushed out into your entire house with a blower. So these units work much like other types of water boiler symptoms but simply using wood as the fuel source to heat the water-and of course with the unit being outdoors.
I agree. We have an outdoor wood boiler and it heats our home well during winters. It is simply a better choice, when it comes to saving your valuable indoor real-estate space. For any more confusion you can also visit heating Morris county NJ for more knowledge!