It is an efficient water heater with a 3000W high-efficiency output, heating in five seconds, making it easy for your life. Safe and intelligent, no water flow stops heating. Easy to install under the bathroom or kitchen sink for washing dishes, food, clothes, faces, and other functions. 3000W output tankless electric water heater eliminates long time waiting; It heats water as the water passes the unit, instant heating, so you can use the hot water as you like.