I have decided to go the gasser route as opposed to a OWB. I have done heat loss calcs for the house, it came out at 43,985 btu/hr. I would also like to heat domestic hot water and eventually heat a 1200 sq ft garage, where the gasser will be located. What size eko do you think I should go with, the 25 or the 40? I will be going with storage,it will be located inthe garage with the gasser, about 35' away from the house. Any suggestions on storage size as well? Thanks for the help.