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We make it easy to find the right replacement part — without guessing.

  1. Find your spa model
  2. Match the part number
  3. Order with confidence
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SpaShopper makes it easy to find quality hot tub and spa replacement parts without the frustration. From spa pumps and heaters to control boards, jets, filters, and plumbing components, we stock parts that fit a wide range of popular spa brands. Whether you’re fixing a heating issue, replacing a worn pump, or upgrading aging components, SpaShopper helps you get your spa running again quickly and confidently.

Balboa Water Group

Balboa Water Group hi-limit sensors are safety temperature sensors used in Balboa
spa control systems to prevent continued overheating. These sensors monitor water
temperature independently of the main temperature sensor and will shut down the
heater or entire system if unsafe temperatures are detected.

Important clarification: A hi-limit sensor does not cause a hot tub to overheat.
Its purpose is to stop continued overheating when unsafe conditions occur. If a
spa is overheating the hi-limit sensor is doing its job and the actual cause of
overheating must be identified and corrected.

Common causes of hot tub overheating include excessive filtration or heating
cycles especially during hot ambient weather pumps running too frequently or too
long incorrect pump wiring after a recent pump replacement and trapped heat caused
by heavy insulation during summer months.

Circulation pumps run 24 hours a day by design and do not cause overheating.

Control board relay failure can cause overheating but this is rare.

In extremely hot climates venting the spa cover by breaking the seal on one side
can help release trapped heat though cooling may take several days.

This category includes hi-limit sensors designed specifically for Balboa control
systems. Balboa hi-limit sensors vary by resistance value connector style cable
length and control system compatibility and must be matched correctly to the
specific Balboa system.

Symptoms of a faulty hi-limit sensor may include nuisance shutdowns error codes
related to overheat conditions or failure to reset after cooling. Corrosion scale
buildup sensor drift or moisture intrusion can affect sensor accuracy.

Balboa hi-limit sensors are not interchangeable with sensors from other brands.
Sensors that appear similar may have different resistance values and will not
function correctly if mismatched.

Before ordering identify the Balboa control system model and existing hi-limit
sensor part number. Some Balboa systems use separate hi-limit and temperature
sensors while others use combination sensors depending on system generation.

If you are unsure which Balboa hi-limit sensor is correct for your spa do not
guess. Text clear photos of the existing sensor control box and wiring connections
and we will help confirm the correct replacement before you order.

Text photos 772 800 5445  
Call 844 500 4645

Note SpaShopper is not affiliated with Balboa Water Group or any spa manufacturer.
Brand names and part numbers are used for compatibility and identification
purposes only.

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