Truma Aqua Go filter failed

**Patriot** · 2026-06-01T18:19:21Z

This morning while doing a full systems ‘go’ inspection on Hull #634 XPLOR, I discovered when I configured the Truma water heater valve to the ON position, an impressive stream of water shot directly out of the Truma filter exterior housing. After a little troubleshooting, I removed the filter and discovered that inside the filter housing, a small black round piece of plastic had blown out of the filter housing. This rendered the filter useless. We have had 5.5 years of trouble-free service from our tankless Truma and this was a first. We like our Aqua Go.

I am posting this in the event anyone should have the same issue with their Truma filter. I have the optional antifreeze filter which works in a pinch as a back up. If you do not have the optional antifreeze filter as a back up, you will be stuck like Chuck with no hot water. In order for the Aqua Go to work, it has to have the filter element.

I contacted Oliver Service and ordered a OEM replacement and an extra back filter up of the exact one you see in the below pics. “Two is one and one is none.” 🫡🇺🇸

Replacement filters are $95.00 plus shipping. Thank you Mike Sharpe for getting my new filters shipped out.

The tiny piece of plastic that broke loose.

Here is the filter that failed. You should not be able to look through your filter. The arrow points to where this tiny piece blew out. There is no way to repair it.

I pass this on, so that if you have this issue you can just replace the filter with a new one.

Edited 1 hour ago by Patriot