Looking for advice about a Harman SF-260 boiler. I will only be burning wood. I am thinking about buying a used Harman SF-260. The boiler looks to be in very good condition, used two or three years. Do these boiler have a good reputation? Can this boiler be used with out storage tank? No room for storage tank in basement. Are the boilers hard to keep clean of creosote? Should I put in a damper in the stack? My chimney is 8" X 8" and has very good draft. The boiler is for sale for $1,500. I have a old Franks boiler that needs to be replaced, this has been a good boiler in the past.