If you notice a difference in the taste/odour of the water and/or experience a slowdown in the flow rate, this may indicate that your filters need cleaning. If after cleaning, the filter speed does not increase or you still notice the same taste/odour, then it is time to replace the filter elements.
See also the overview below showing the 5″, 7″ and 9″ ProOne G2.0 filter elements:
| ProOne water filter system | Content | Filter options | Replacement | Throughput |
| ProOne Traveler+ | 8,5L | 1x ProOne G2.0 5″ filter element 2x ProOne G2.0 7″ filter elements | 6 months 12 months | Approximately 3.5 hours Approximately 3 hours |
| ProOne Big II | 9,5L | 1x ProOne G2.0 5″ filter element 2x ProOne G2.0 7″ filter elements | 6 months 12 months | Approximately 4.5 hours Approximately 3.5 hours |
| ProOne Big+ | 12L | 1x ProOne G2.0 7″ filter element 2x ProOne G2.0 9″ filter elements 3x ProOne G2.0 9″ filter elements | 6 months 12 months 18 months | Approximately 4 hours Approximately 3 hours Approximately 1.5 hours |
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