The Coates 1.5ILS is an in-line electric spa heater featuring a 1.5 kW, 120V, 12A output and a stainless steel tank. It incorporates replaceable titanium elements, a replaceable incoloy element, and a pressure switch designed to prevent overheating by restricting operation during low water flow conditions. The unit also includes a close differential thermostat, a manual reset high-limit switch, and an element on-light indicator.








