Balboa 15" 5.5kW Dual Sensor Flow Thru Heater (26-0071-DS-7S-K)

Balboa 15" 5.5kW Dual Sensor Flow Thru Heater (26-0071-DS-7S-K) is a replacement heater assembly built for spa systems that use a dual-sensor flow-through configuration. Its 5.5kW output and 15" form factor are important fitment details, since heaters that appear similar externally can differ in electrical requirements, sensor arrangement, and plumbing alignment.

Balboa’s dual-sensor approach allows the control system to monitor conditions associated with water moving through the heater rather than relying on a simple one-point mechanical switching method. When the correct heater is paired with the proper control system and circulation setup, this arrangement supports more consistent heater management and helps the system respond appropriately during normal heating cycles.

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 26-0071-DS-7S-K can help restore dependable water heating, steadier temperature maintenance, and the day-to-day comfort expected from a properly operating spa.

• Dual-sensor heater configuration for compatible Balboa systems
• 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