I just installed an old Reflek cast iron "pot" heater aboard a 52 footer and my father-in-law has a Reflek(s) s/s pot heater aboard his 44 footer. They are burning 3 and 2.5 gallons of
fuel per day respectively, keeping their boats at around 70 deg. here in New England. Both owners live aboard and are very pleased with the performance of their heaters.
Getting and maintaining the siphon can be a bit of a wag but I installed a dedicated
fuel tank aboard the 52 footer above the level of the
stove and fed from it''s bottom,
fuel supply is no longer a problem. If you want to feed off of your existing
fuel tanks and they are below the level of your
stove, an electric
fuel pump, available at most automotive supply stores, would be able to help you. In that roll, it’s drain on your batteries would be minimal.
Pi