This is a 2000watt dual element Heater. Heater raises water temperature above 185 degrees. Hotter water cleans better and with less chemical. Heater last used 3 months ago. Recirculating valve attachment also available($20.00 when purchased with heater). Call for pictures of this valve for those situations where hot water is not available. This heater is for use with portable carpet extraction units or can be plumbed in for temporary hot water where no gas is available. It is an in line heater best connected between the extractor and wand. Heater has quick connects which can be changed out depending on your extractor. Each heating element has its own on/off lighted switch. Heater can be plumbed in for temporary hot water. Uses regular 115 volt current. CALL OR TEXT WITH ANY QUESTIONS.