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Pumps, heaters, control boards, and replacement parts — without the confusion.

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Not sure which part fits your spa?

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.

Sundance & Jacuzzi Spas

Sundance and Jacuzzi hi-limit sensors are safety temperature sensors used in
Sundance and Jacuzzi spa control systems to prevent continued overheating. These
sensors monitor water temperature independently of the primary temperature
sensor and will shut down the heater or entire system when 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. If a spa is overheating the
hi-limit sensor is functioning correctly 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 for
extended periods incorrect pump wiring after a recent pump replacement and heat
being trapped due to heavy insulation during summer months.

Circulation pumps run continuously by design and do not cause overheating.

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

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

This category includes hi-limit sensors designed specifically for Sundance and
Jacuzzi control systems. These sensors vary by resistance value connector type
cable length mounting style and system generation and must be matched correctly
to the exact Sundance or Jacuzzi control system.

Symptoms of a faulty Sundance or Jacuzzi hi-limit sensor may include nuisance
shutdowns overheat-related error codes or failure to reset after the spa has
cooled. Corrosion scale buildup sensor drift or moisture intrusion can affect
sensor accuracy.

Sundance and Jacuzzi 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 Sundance or Jacuzzi spa model control system name
and existing hi-limit sensor part number. Many systems require brand-specific
sensors for proper operation.

If you are unsure which Sundance or Jacuzzi 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 Sundance Jacuzzi or any spa manufacturer.
Brand names and part numbers are used for compatibility and identification
purposes only.

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