The domestic water heater is installed under the sink, and its small size saves you space under the sink. Dimensions: 7.87 x 5.12 x 2.56. The Mini Tankless Water Heater is the best gift for someone with a new sink When the water passes through this unit, the 3000W output tankless electric water heater will heat up within 3 seconds, saving your water bill. You can control the temperature according to the water flow. Water temperature range: 35-50C. 110v Instantaneous Tankless Water Heater for Universal Water Line: 1/2" Diameter (in or out), 110V; Undermount Instantaneous Small Water Heater in Kitchen, Bathroom, Dishwashing, Vegetables, Clothes, Face, etc., Enjoy hot water. Small Tankless Water Heater 110v wire requires 2.5 sq ( 14 awg wire) with breaker 30 amps. Otherwise it will trip. Please check the wires for specifications. If you feel that the water heater is not heating to your liking, try waiting longer or reducing the water flow