Jacuzzi LX Heater FAILED — I Replaced It in Under 30 Minutes!... Arizona Hot Tub Factory - Video

A 2025 Jacuzzi LX Series hot tub with a failed heater was today’s service call. In this video, I show you just how straightforward this style of Jacuzzi heater can be to replace.

Anyone who has worked on some of the older Sundance hot tubs may recognize similarities in the setup.

On the Jacuzzi LX, the heater is mounted vertically alongside the control pack. Power to the heater is handled through a quick-connect style connection at the board, making the electrical connection almost plug-and-play.

To remove the failed heater, I loosen the bonding wire/bar, disconnect the water supply and return lines, and remove the two 7/16-inch nuts holding the heater in place. From there, the old heater comes out, the replacement goes in, everything gets reconnected, and we can put the spa back into operation.

And here’s the part I really like:

I replaced the heater in less than 30 minutes while holding the camera and filming the entire repair.

This service call also involved more than the heater.

The Jacuzzi is being used at an Airbnb, so between renters it also needed a complete Flush & Fill. While we were there, we flushed the plumbing, drained and cleaned the hot tub, refilled it, and prepared it for the next guests.

FAILED HEATER → REPLACEMENT → FLUSH & FILL → BACK IN SERVICE!

If you’re dealing with a Jacuzzi LX that isn’t heating, or you’re a spa technician who hasn’t encountered this particular Jacuzzi heater design, this video gives you a real service-call look at the replacement process.

My name is Scott with Arizona Hot Tub Factory, and they call me SpaMan.

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Remember: It’s just a tub that blows bubbles and heats up. Don’t go crazy, everybody!

See you on the next video.

Hot tubs contain potentially lethal voltage. Always disconnect and verify power before servicing electrical components. Follow the manufacturer’s instructions and applicable electrical codes.