Balboa M7™ 31" 1/4" Hi Limit Temp Sensor [2-pin] (30514KIT)

Type:	Circuit Board Parts
Mfr	Balboa Water Group
Mfg Part #	30514KIT
Hzn Part #	59-138-1066

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TAGS: balboawater, circuitboardparts, spaparts

Details

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SEE REPLACEMENT PART: OBSOLETE

A hi-limit temperature sensor is one of the small but essential parts that helps the spa keep its heating system under control, and this Balboa M7 31 inch 1/4 inch Hi Limit Temp Sensor is designed for compatible 2-pin applications where the original sensor has become unreliable. When a sensor begins to drift or fail, the heater side of the system can stop feeling predictable, even if the rest of the spa is still operating.

The 31 inch length and 1/4 inch format matter because sensor replacements need to match the original installation path and physical setup if the final repair is going to feel clean and serviceable. A sensor that fits correctly is much more likely to restore the intended relationship between the heater, the control pack, and the system’s safety logic.

The 2-pin connection also helps define the intended application, making this a focused replacement instead of a near match. That kind of precision is important in temperature-related parts, where dependable readings are central to the spa’s overall confidence and comfort.

Installed in the proper M7 setup, this sensor helps restore cleaner high-limit monitoring and supports a more stable, more trustworthy heating system overall.

Hi-limit temperature sensor for compatible Balboa M7 2-pin applications
31 inch length and 1/4 inch format support intended fit
Helps restore dependable heater-related monitoring
Useful when original sensors become unreliable or inconsistent
Improves heating-system confidence and service accuracy

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.