3 KW Constant-Temperature Water Heater — Small Thermostat Unit for Swimming Pool, Spa & Bathroom, Quiet Operation

Compact 3 KW constant-temperature water heater designed for swimming pools, spas and bathtubs. The inner tank provides excellent circulation, resists slag buildup and can be easily disassembled for service. Its small size makes installation simple — ideal for fitting into the circulating massage pipe at the bottom of a bathtub. Operation is straightforward: a mechanical temperature-control switch allows precise temperature setting to match your requirements. Safety features include a water flow switch and an ultra-high temperature protection switch for reliable, safe operation. All control components are mechanical, economical and built to last, while the unit runs quietly.