The ES3 Zip Inline Instantaneous Water Heater 2.8kW by Zip is a corded electric tankless water heater/boiler designed for indoor mounting. With its instantaneous heating system, this water heater provides hot water on demand, making it a convenient and efficient option for homes or small businesses. The Zip brand is known for its quality and reliability, ensuring that the ES3 Zip Inline Instantaneous Water Heater 2.8kW is a durable and effective heating solution. Brand new in orginal box , never opened.