The Chofu stove is a precision-built, high-efficiency water heater designed specifically for hot tubs. It circulates water using the principle of “thermosiphon” – the pumping action created by rising hot water, which eliminates the need for a circulating pump or electricity. A double-walled stainless steel water-jacket surrounding the firebox makes the entire firebox a heat-transferring surface. And Chofu’s exclusive high-tech welding process makes it unmatched in durability. The Chofu wood…