The HydroGEN is the world's first and only water cooled CO2 generator. Water cooling is capable of removing 86% of the heat produced by burning propane and has loads of other options and features not available in any other CO2 generator on the market, including a completely adjustable flame (can produce anywhere between 15 and 45 cubic feet of CO2 per hr), an adjustable water flow valve, no pilot light (flame is activated by water flow), a tipover cut off, an overheat shut down sensor.