3KW Electric Thermostat Water Heater for Swimming Pool, Bathtub, SPA & Massage Hot Tub — Efficient Heating

Compact heater designed to fit into the circulation massage pipe at the bottom of a bathtub for simple in-line installation. User-friendly controls include a mechanical temperature switch for setting the water temperature to your preference. Built for safety and reliability during movement, the unit is fitted with a water flow switch and an ultra-high temperature protection switch. All mechanical control devices are economical. The heater’s internal components use 316# stainless steel and an electric heating tube, providing good corrosion resistance (chlorine corrosion). The inner tank promotes strong circulation, resists scale buildup (does not hang slag), and can be easily disassembled for maintenance.