kevin12973 wrote:8 tons for 150 year old 4000 sq. ft. house? That is incredible. Im on my third year with my sf 5-20, house set at 70 deg. wich also heats domestic hot water. Runs 9 months out of the year in a 2300 sq. ft new house in upstate NY. 1st year, 8 tons blashac. 2nd year, 7 tons superrior. This is a real account of fuel consumption. Still much cheaper than fuel oil. Just want you to know the truth about fuel consumption.
Check you set up there is something wrong you should never have to use that much coal for that little space.
I burned 2.5 tons of coal heating 3140 sq ft in a Non Insulated walls 1948 coal cinder block ranch in the winter months OCT to March T -Stat set at 70F House Temp 72 to 73 F . In spring and summer time heating DHW I use 1900 lbs from April to Oct. You need to check the system out You are using way to much coal for what your heating Your Numbers are
more like heating a 4200 sq ft + House .