Our 1st year-we fired up our Harman Mark 11 on Columbus weekend. We've also let it go out 4 times because of too warm weather,but now we know it doesnt put out alot of ash after checking the pipes. I think it'll run steady now. Its in the cellar-heating us by radiant heat,and doing a darn good job.Have the pellet stove in the living room for just in case days. Have 2 ton-Reading Pea coal-Dysarts-$300 a ton. We think thats what we'll use,1 ton of pellets.It'll be interesting to see,and if thats the case,we've chopped our heating bill in half.Now maybe that sheetrock can go up on the walls...?