Staff Answer
Aug 20, 2026 - 08:17 AM
The membrane filter should typically be changed every 2-5 years. The exact replacement time depends on your water usage and the incoming water quality. To check the membrane’s effectiveness, use a TDS meter to compare TDS levels before and after filtration. If the membrane is not removing enough TDS, it’s time to replace it. For easier calculations, visit PremierH2O.com for our TDS calculator. Use our TDS Calculator to find membrane effectiveness You can also find our recommended TDS meter using this link. Pocket TDS Meter with Case Regular monitoring ensures your system provides the best water quality for your household.
