Teenwin household biogas instantaneous water heater Technical characteristics of the biogas household instantaneous water heater 1, Convenient water control: only turn on the water tap and the water heater starts. 2, High energy saving efficiency: main burner and heat exchangers contain advanced energy-saving combustion technology. 3, low water pressure activation: water control link valve can start with low water pressure and constant water flow at low water pressure to meet user demands in low water pressure region or high buildings.