Lightning wrote:There may be confusion there between face cords and full cords.
I doubt it. I used to burn nearly that much (50 face cords for the city boys) in a big farmhouse that sat between 1000 acres of open farm land and Lake Champlain. The house was a little bigger, but the point is that those big old places with drafty windows can consume a LOT of btu's. The house I live in now had a wood boiler when we moved in. The previous owners said they had heated with wood for 20 years, 15-16 cords
per year is what they averaged...plus a few tanks of heating oil per year for the spring-summer-fall. Now I am doing the same job with 9-10 tons of coal per year. Coal stoker furnaces and boilers are considerably more efficient than a traditional wood unit, mainly due to the different combustion properties of anthracite (less air required, no creosote produced).
Regardless of how many btu's were required before, now is the time to keep the wind from blowing through the house. A good rule is that 50% of a home's heat loss is due to infiltration. Seal up those gaps between the sill and foundation, make foam inserts to cover those drafty basement windows. Caulk/fill/foam as necessary to stop the drafts. Got a set of pull-down attic stairs? Make an insulated box to set over the stairwell in the attic.