I think I have decided I need a eko. My heat demand seems to fall between the 40 and 60. I am going to be heating 1400 sq ft of well insulated house and 1000 sq ft of attached garage. I also will make my hot domestic with the boiler. I have a 50 gallon tryangle tube heat storage for my domestic already and I have access to 2 250 gal heat storage. I do not want to have to run my boiler ever if I am home. Temps get to -60 here and -35 lasts for months some years. What do you all think.