... is too long to heat the water in whole tankFit for large powerUnderside heaterHeater put under bottom of water tankHeat quiet ... , footbath, washing hand, vegetable and dish. PTC water heater for drink warmer and boiler, vapor generater, detailed introduction can be seen at ... appliance.PTC as a heating element, it fits for high safety, slap-up product.For getting higher power, let water flowing or ...