Balboa BP7 4kW Retrofit Kit Complete Spa Control System (G6406)

Control Systems
Balboa Water Group
G6406
58-138-3260
G6406
389173
COMPARE AT $623.99
OUR PRICE $479.99
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Under 25 lbs. Contiguous USA
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Retrofit kits are about more than replacing one failed part. They are about giving an older spa a cleaner path into a more modern and dependable control setup. This BP7 4kW Retrofit Kit is designed as a complete spa control system package for compatible applications where a simple one-part repair is no longer the best answer.

That is what makes a complete retrofit kit so appealing. Instead of piecing together a control pack, related components, and heater compatibility one step at a time, you get a more coordinated solution that is meant to work together. That can save time and reduce the uncertainty that often comes with larger control system upgrades.

The 4kW heater pairing also helps define the intended performance range, which matters when homeowners want the replacement to preserve the feel of the original system instead of introducing an unbalanced or mismatched setup. A retrofit should make the spa feel better, not harder to understand.

Once installed in a compatible spa, this kit helps deliver a cleaner control foundation, stronger day-to-day reliability, and a more confidence-inspiring experience for anyone trying to keep an older spa worth owning.

  • Complete retrofit control system for compatible BP7 applications
  • 4kW setup supports balanced heating and control replacement
  • Helps modernize older spa systems more cleanly
  • Useful when piecemeal repairs are no longer the best option
  • Supports a more dependable and easier-to-manage spa experience
Balboa Water Group – Spa Systems, Pumps, Heaters & Control Components
Who is Balboa Water Group?

Balboa Water Group is the world’s largest manufacturer of spa systems, components, and control technology, producing an estimated 70% of all hot tub systems globally. With decades of industry leadership, Balboa is the driving force behind many of the pumps, heaters, control packs, and circuit boards used by top spa brands. Known for innovation, reliability, and engineering excellence, Balboa has become the standard for spa system performance worldwide.

What products does Balboa Water Group specialize in?

Balboa specializes in complete spa system solutions, including control systems, topside panels, circuit boards, heaters, pumps, sensors, jets, and accessories. Their systems are designed to seamlessly integrate temperature control, water flow, filtration, and lighting. Balboa products are widely used in both new spa manufacturing and replacement parts, making them one of the most commonly sourced brands for hot tub repair and upgrades.

Why choose Balboa Water Group parts for your pool or spa?

Balboa parts are trusted for their compatibility, durability, and consistent performance across a wide range of spa systems. Because Balboa components are used in the majority of hot tubs on the market, finding compatible replacement parts is easier and more reliable. Their advanced control technology allows precise management of temperature, jet functions, and energy usage, helping extend equipment life while improving the overall spa experience.

How do you identify and choose the correct Balboa Water Group part?

To select the correct Balboa part, it’s important to match your existing system’s model number, circuit board type, heater configuration, and topside control compatibility. Checking labels on control packs and referencing wiring diagrams or product manuals ensures proper fit and function. Choosing the correct Balboa component helps maintain system efficiency, prevents compatibility issues, and ensures safe operation.

Need help finding the right Balboa Water Group part?

At Bath & Spa Parts Online, we carry a wide selection of Balboa Water Group pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support.

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