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These are add on furnaces which you either add on to your existing furnace so you don’t have to use your fuel fired furnace and can burn wood instead. If you run out of wood, your house wont freeze because your main furnace now becomes a back up for when you run out of wood. You can also use them as a stand alone furnace as I also do in my shop. It is my primary and only way I heat my shop. |
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