Shaver Outdoor Wood Burning Furnace     

The easiest way to establish your BTU needs is to look at your current furnace.
There is normally a label on the furnace that tells you the BTU output.
If not, call the manufacturer or go to their website with your model number
and they will tell you the rating. 

Any furnace rated at 164,000 BTU or less can be replaced with our Shaver Pro Series 165

Select Insulation Type Little or No Insulation Poor Average Good Climate/Region Cold-New Hampshire Temperate-Virginia Square footage to heat x Ceiling height (feet) ===>   BTU     (Watts )