does anyone know about the outside wood burning hot air furn...

does anyone know about the outside wood burning hot air furnaces like "sure-flame" or "wadena"

I Own a Wadena Wood Furnace and i wouldnt trade it for anything i get 8-10 hrs burn time keeps the whole house very warm even on our coldest days if you have any questions let me know i will try to answer them for you

I am considering a wadena outdoor furnace and would like to ask about them.

How long have you had your wadena?

It seems to me the firebox is made out of thin metal and I wonder what kind of life you expect and if you will have to replace the whole furnace when it is goes bad?

How much wood do you use per year?

How much do you estimate you save in fuel per year and how long before you recover the cost of your investment?

What do you wish was different about your wadena?

Thanks for the help