Brondell Circle carbon and pre-filter replacement set
RF-20RF-20 contains the staged replacement filters for the Circle RC100. The system's RO membrane is RF-40 and follows a separate schedule.
Verified system-model match
Replacement filters for Brondell RC100
2 verified replacement options for this reverse osmosis system.
Verified replacement options
Brondell Circle reverse-osmosis membrane replacement
RF-40RF-40 is the RO membrane for the Circle RC100. It does not replace the shorter-life RF-20 carbon and pre-filter set.
Confirm before orderingUse the complete system model, then compare every replacement part number and stage.
Browse reverse osmosis filtersHow to confirm the match
- Confirm the system label says RC100, including every suffix.
- Compare the installed cartridge or membrane part number.
- Check the stage count and membrane capacity where applicable.
- Follow the manufacturer’s replacement schedule for each stage.
Do not choose a replacement by cartridge appearance alone. Similar housings can use different connections, capacities, or stage combinations.
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