Balboa FloThru Revolution Heater [18-13/32" x 2"] [4.0kW] [230v] (55691)

Type:	Heaters
Mfr	Balboa Water Group
Mfg Part #	55691
Hzn Part #	46-138-1070

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TAGS: balboawater, heaters, spaparts

Details

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SEE REPLACEMENT PART: OBSOLETE

When a spa heater starts losing its ability to warm water consistently, the whole system can feel less relaxing and less dependable. This Balboa FloThru Revolution Heater is designed for compatible 230-volt applications requiring 4.0kW output, giving homeowners a way to restore the heating side of the spa with a properly matched flow-through heater assembly.

The FloThru design matters because it helps water move efficiently through the heater body, which supports stable heat transfer and helps the heater work as part of the system instead of becoming a restriction point. That kind of smooth water passage contributes to steadier performance during normal spa use.

The specific 18-13/32 inch by 2 inch sizing is important because heater replacements need to match the original plumbing and layout closely if the repair is going to feel clean and dependable. Proper application is a big part of what makes a heater swap worthwhile.

Once installed in the correct setup, this heater helps restore more dependable temperature performance and gives the spa a stronger, more confidence-inspiring heating foundation for everyday use.

FloThru heater for compatible 230V 4.0kW spa applications
Helps restore steady and efficient water heating
Flow-through design supports cleaner heat transfer
Useful when the original heater becomes inconsistent or worn
Improves confidence in daily spa temperature performance

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.