Patented temperature control keeps potable water at approximately 140°. Reduces the risk of scalding. Controls coolant flow through the heat exchangerAluminum tankAluminum alloy case, not stainless, eliminates dissimilar metals7/8" dia. heat exchanger for greater surface area for better heat exchangeUL/CE certified ignition protected1500W elementHot/cold connections are 1/2 NPTWith mounting plate