Toronto Spa internal view diagram, Ozonator circled in blue

What does the Ozonator do?

The Ozonator is just one step in the elaborate filtration process specific to our Acrylic spas.

It is a device that generates and injects ozone into the spa water to aid in maintaining water quality.

Ozone helps disinfect the water to eliminate bacteria and organic material such as body oils, dead skin cells and hair.

How do I know that the Ozonator is working?

The ozone generator will only activate when the spa is running a filtration cycleThe topside will indicate when this is happening by displaying signs like FLTR1, FLTR2, etc.

To confirm this, open the cabinet while the filtration cycle is running and check for an indicator light on the Ozonator.

The device will typically be found behind one of the cabinet panels below the Topside display.


If the spa is running a filtration cycle and you do not see an indicator light illuminated on the device, the ozonator is not working properly.

If you are getting a reminder message showing "CHEK O3" (spa models after 2016), follow the instructions above.

This message will appear once every year and is simply reminding you to check the Ozonator.

If you are experiencing a leak from your Ozonator or have found water in the clear tube, please see our solution "Troubleshooting an Ozonator Check Valve".