--- title: "RO Membrane Change: When and How Firms Do It | ServicePilot" description: "RO membrane change for water purifier service firms: signs it is due, TDS checks, the replacement process, pricing the visit and reminding customers on time." url: https://servicepilot.in/blog/ro-water-purifier/ro-membrane-change/ canonical: https://servicepilot.in/blog/ro-water-purifier/ro-membrane-change/ site: ServicePilot section: Blog articles updated: 2026-10-30 keywords: "RO membrane change" language: en-IN --- RO & Water Purifier # RO Membrane Change: When It Is Due and How to Handle It By the ServicePilot Team ยท Published 30-10-2026 RO membrane change time Photo by [Bluewater Sweden](https://unsplash.com/photos/a-kitchen-with-a-sink-and-refrigerator-Ue6zqX77Ykc?utm_source=servicepilot.in&utm_medium=referral) on [Unsplash](https://unsplash.com/?utm_source=servicepilot.in&utm_medium=referral) An RO membrane change is due when product water TDS rises and stays high after the pre-filters are changed, when flow drops sharply, or when the maker's recommended interval for the local water is reached. Test feed and product TDS, change pre-filters first if they are due, then replace the membrane, flush, re-test and record the date so the next change can be reminded. The RO membrane is the costliest part a water purifier service firm replaces regularly, and the one customers question most. Doing an RO membrane change on evidence (TDS readings) and recording it builds trust and sets up the next reminder. ## Signs an RO membrane change is due - Product water TDS has risen and stays high after pre-filters are replaced - Flow of purified water has dropped sharply - Water tastes different, and the pre-filters are not the cause - The maker's interval for this water quality has passed ## The process - Record feed and product TDS before work. - Check and change pre-filters (sediment, carbon) if due. - If product TDS is still high, replace the membrane with the correct model. - Flush as per the maker, then re-test product TDS. - Record the date, part, readings and next due date; show the customer the before and after readings. ## Pricing the visit Price the membrane, labour and travel, and show them on the job card. For AMC customers, say in the plan whether the membrane is included; see the [RO AMC quotation format](https://servicepilot.in/blog/ro-water-purifier/ro-amc-quotation-format/). ## Make the next one a reminder, not a complaint Record the change on the purifier's record and set the next due date from the readings and the maker's guidance. Use the [filter change reminder system](https://servicepilot.in/blog/ro-water-purifier/ro-filter-change-reminder-system/) and the [RO service report format](https://servicepilot.in/blog/ro-water-purifier/ro-service-report-format/) for the visit. ## Each purifier with its history ServicePilot keeps each purifier as an asset on the customer's record, with parts used on every job, and the [Service Due](https://servicepilot.in/features/service-due-reminders/) list shows customers due for a filter or membrane change. [In ServicePilot See RO AMC software in ServicePilot How ServicePilot handles this for your business, with a free demo.](https://servicepilot.in/industries/ro-water-purifier/) Frequently asked questions ## Questions people ask **Q: How often should an RO membrane be changed?** A: It depends on feed water quality, usage and pre-filter care; follow the maker and the TDS readings rather than a fixed calendar. **Q: Can the membrane be cleaned instead?** A: Sometimes, for domestic units, cleaning gives a short gain; replacement is the reliable fix when TDS stays high. **Q: Should pre-filters be changed with the membrane?** A: If they are due or clogged, yes. A clogged pre-filter shortens the new membrane's life. **Q: Is the membrane covered in an AMC?** A: Only in a plan that says so. Many firms offer a top plan that includes one membrane change a year. ## Related articles [RO & Water Purifier RO Installation Charges: How Water Purifier Firms Should Price RO installation charges for water purifier service firms: what the visit includes, extra pipe and fittings, wall mounting, water test, and the AMC. Read the article](https://servicepilot.in/blog/ro-water-purifier/ro-installation-charges/)[RO & Water Purifier RO AMC Quotation Format for Water Purifier Service Firms RO AMC quotation format for water purifier service firms: plan options, visits, filters and membrane cover, price, terms and validity. Editable Word download. Read the article](https://servicepilot.in/blog/ro-water-purifier/ro-amc-quotation-format/)[RO & Water Purifier RO AMC Software for Water Purifier Service Firms RO AMC software for water purifier service firms in India: filter-change schedules, AMC contracts, reminders, parts used and GST invoices in one place. 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