The 5.5kW Auxiliary Heater is a robust, flow-through heating solution designed to support spa systems in maintaining consistent water temperatures, especially in larger or high-demand spas. With a 5.5kW heating element and compatibility with Balboa M7 technology, this auxiliary unit works seamlessly with VS and EL Series control systems. Its flow-through design ensures efficient heat distribution, while built-in safety features like overheat interlock protection provide peace of mind.