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Temperature Sensor 72493 - Bubbles Supply

Temperature Sensor 72493

Part #: 72493

$89.87
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this sensor

The Caldera Temperature Sensor 72493 is an OEM replacement sensor designed for Caldera Spas systems. This genuine temperature sensor monitors water temperature and communicates with your spa's control system to maintain proper heating cycles. When functioning correctly, it prevents common error codes like HH (high heat), ICE (freeze protection), and OH (overheat) conditions that can disrupt your spa experience.

As an authentic Caldera part, this temperature sensor delivers exact fit guaranteed performance with our same-day shipping and comprehensive 1-year warranty. The sensor's precision temperature monitoring ensures your spa maintains optimal water temperature while protecting against dangerous heating malfunctions. Professional installation is recommended to ensure proper sensor placement and secure electrical connections for reliable long-term operation.

Exact part number

72493

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Also known as / Replaces

This part replaces or is interchangeable with:

  • Caldera temp sensor
  • hi-limit sensor
  • spa water temperature sensor
  • thermistor

Looking for an older part number? Check our supersession lookup tool

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • HH error code displayed on control panel
  • OH (overheat) error code triggering spa shutdown
  • ICE or freeze protection error code appearing incorrectly
  • Spa not heating or heating erratically
  • Spa heater cycling on and off unexpectedly
  • Control panel showing inaccurate water temperature readings

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm your spa displays error codes HH, OH, or ICE — these are the primary indicators of a failed temp sensor
  • Locate your spa's model and serial number to verify part compatibility before ordering
  • Inspect the existing sensor for visible damage — corrosion, cracked housing, or broken wiring harness
  • Check connector type on your current sensor to ensure the replacement plug matches
  • Rule out a faulty control board before replacing the sensor — a bad board can produce the same error codes

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Medium — Some experience neededTypically 30–60 minutes

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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