Water Purifier Filter Replacement and Service
Original filter changes, TDS testing and brand-independent service for home and office purifiers.
Free calculator
See when each filter is due based on household size, water source and last change.
Results update instantly as you type.
Results are for preliminary sizing; the final design is based on water analysis and a site survey.
Typical intervals: sediment and GAC every 6 months, CTO block carbon every 12, the RO membrane every 24–36 and post-carbon and mineral filters every 12. Larger households, cooking use and hard or well water shorten these intervals.
Recommended systems
Original filter changes, TDS testing and brand-independent service for home and office purifiers.
Enclosed multi-stage RO home purifier with RO membrane, installation and filter service.
Affordable 5-stage under-sink RO purifier with 8-litre tank.
Free site survey & water analysis
We survey your site and analyse your raw water, then present the system that fits your needs and budget in a technical report.