I have a eko 60 that is oversized for now. I did a heat loss and I come up with 32500 btuhr at 0 degrees outside temp and 75 degree house temp. Im thinking about storage and considering 500 gallon . I have hot water baseboard.If Im doing the math right that should get me 6 hours of heat on the coldest day plus time of burn.I live in NE Pa. most of the time it is in the 30 to 40 degree range exept for 1 or 2 weeks. Does that mean I would get 12 hrs or more at these temps? Im thinking about blocking one nozzle to extend burn time and adjusting the amount of wood I put in per fire. Also how long can I go between fires in summer for domestic hot water? I realize I should have more storage but would like to start off with 500 gallon.