Eemax electric tankless water heaters provide endless hot water where you need it and when you need it. This product can be used for any of your residential or commercial water heating needs. The EEM24018 is a 240 volt, 18 kilowatt unit. It can produce enough hot water for up to 1 shower and 2 sinks simultaneously in colder climates. In warmer climates it can produce enough hot water for up to 4 Showers or sinks simultaneously.