Balboa 15" 5.5kW Auxiliary Heater (26-58132-K)

Balboa 15" 5.5kW Auxiliary Heater (26-58132-K) provides higher-output supplemental heating for compatible spa systems designed around a separate auxiliary heater circuit. Its 5.5kW capacity and 15" configuration should be confirmed against the original assembly, as auxiliary heaters are application-specific components rather than universal replacements.

Auxiliary heaters serve a different role from the primary heater in a spa pack. They are used where the system was designed to add heating capacity through a dedicated secondary assembly, so replacing one requires more than matching kilowatt output alone. The control interface, plumbing sequence, available flow, and electrical requirements all need to correspond with the original installation.

With a 5.5kW heating rating, this model provides greater heating capacity than lower-output 1.5kW, 2.0kW, 3.0kW, or 4.0kW alternatives. That higher output can support faster temperature recovery when used in the system for which it was designed, but it also carries different electrical demands. The spa’s control system, wiring, and breaker configuration must be appropriate for the specified heater load.

Proper fitment begins with verification. Compare the existing heater’s part number, length, rated output, sensor or control connections, plumbing orientation, and electrical requirements before ordering. Spa heaters are not universally interchangeable, and taking a few minutes to confirm these details can reduce installation delays, unnecessary returns, and repeat service calls.

Once correctly matched and installed, the Balboa 26-58132-K can help restore dependable water heating, steadier temperature maintenance, and the day-to-day comfort expected from a properly operating spa.

• Auxiliary heater design for compatible supplemental-heating applications
• 5.5kW rated heating output
• 15" heater configuration for correct physical fitment
• Match original electrical, plumbing, and control-system requirements
• Supports dependable temperature recovery when correctly matched and installed