Please we can not afford home heating oil its 2.99 a gallon as of this morning. We want to get one of those out door furnaces that can burn coal pellets wood anything really. After doing some research it looks like they cost 5000 dollars. Why I am not to sure,its just a big fireplace with a small building around it. We do not have that much money to spend. My husband and brother are extremely handy is there any kind of kit you can buy to build your own then just build a shed around it? Please we are freezing!! We have a oil burning hot water base board heat now. I believe you can just hook up the outdoor heater to the existing furnance? Please any help or info.......