Hydro-Quip Water Pro BP7 5.5kW Retro-fit Kit Retrofit Kit [SpaTouch 4+] [50-BP7-S4P-55-K]

Upgrade your spa with Water Pro’s BP7 Retro-Fit Spa Control, featuring a powerful 5.5kW heater and the SpaTouch 4 Plus topside panel. This Balboa BP7 Series retrofit kit is designed to replace older control systems, delivering modern, reliable performance with a compact footprint that fits a wide range of spa configurations. The kit includes the essential components you need for a professional installation, including the system, SpaTouch 4+ panel and light cord.

Why this BP7 retrofit stands out

• 5.5kW heater design for efficient heating and reliable hot-water delivery, suitable for spas that demand quick warmups and steady temperature maintenance.
• BP7 to match your spa’s heating needs and flow requirements.
• Full circuit flexibility: all circuits are convertible to 120V or 240V, with amp receptacles for clean, code-compliant wiring and easy integration into existing electrical setups.
  
• Wi‑Fi capable and modern control options: integrate with ControlMySpa-compatible ecosystems to monitor and adjust spa settings remotely.
• Durable, reliable build with a 2-year warranty, backed by Hydro Quip’s Water Pro lineage and Balboa’s BP7 platform.

In addition to heat and control, the BP7 system includes practical features such as a 12V light assembly and convenient wiring provisions through standard Balboa components, making future service and upgrades straightforward for professional technicians.

Key specifications at a glance

• Heater version: Flow Thru
• Heater wattage: 5.5kW 
• System voltage: 115/230V (convertible across circuits)
• Topside included: SpaTouch 4 Plus
• Supported components: Pump1 + Pump2 + Blower or Pump3
• Light assembly: 12V
• Special features: Circulation pump support, Wi‑Fi capable
• Warranty: 2-year system warranty
• Professional installation is required for warranty validation

These retrofit kits are designed to replace older Balboa BP systems and BP5-era packs, providing modern controls and reliable performance in a familiar BP7 form factor. They’re compatible with a range of spa topsides and offer straightforward conversion to 120V or 240V operation for flexible installation scenarios. Installation requires a qualified spa technician to ensure correct wiring, configuration, and warranty eligibility.

Real-world use cases and what it solves

Ideal for service professionals upgrading aging spa controls or replacing failed boards in mid-size to larger hot tubs. The 5.5kW BP7 kit delivers quicker heat-up times and stable temperatures in setups that demand higher wattage, while the SpaTouch 4 Plus topside keeps control intuitive for owners. The ability to convert circuits to 120V or 240V simplifies field installations across regions with different power standards. If you’re updating from older BP models or VS/BP5 configurations, this kit provides a seamless path to modern reliability and remote-friendly operation through compatible topsides and Wi‑Fi integrations.

Who this is for

Licensed spa technicians and informed DIY enthusiasts (with professional installation) who want a future-proof, high-performance spa control system. It’s particularly well-suited for spas that require higher heat output, precise temperature control, and the option to monitor and adjust settings via Wi‑Fi-enabled platforms. If you’re replacing an aging BP5/VS pack or upgrading to a more capable platform, the BP7 Retrofit Kit offers a robust, long-term solution.

What’s included and compatibility notes

The BP7 Retrofit Kit includes the system unit, SpaTouch 4 Plus panel, and light cord, along with the necessary wiring and mounting hardware to complete a professional installation. It’s designed to replace older Balboa BP systems and is compatible with multiple Balboa topsides, making retrofits straightforward for technicians familiar with Balboa controls. Compatibility notes and installation guidelines indicate professional installation is required for warranty validation, and the kit supports 5.5kW heating with 23 GPM flow requirements for optimal performance in 5.5kW configurations.

Pro tip for installers: confirm the spa’s pump layout and flow rate to ensure the 5.5kW heater operates within its recommended GPM range. If you’re moving from a lower wattage heater, verify wiring and circuit capacity to support the increased load, and leverage the SpaTouch 4 Plus topside for a familiar, user-friendly interface that still delivers modern features and remote-ready capabilities.