- 1 of 3
1-Year Replacement Filter Kit for RainSoft 9591 Reverse Osmosis System (RO Membrane Sold Separately)
1-Year Filter Replacement Kit for RainSoft 9591 Reverse Osmosis System (RO Membrane Sold Separately)
- STAGE 1 - 1x Sediment Pre-Filter (93023) - Replace Every 12 Months
- STAGE 2 - 1x Carbon Block Pre-Filter (OMB934-5m) - Replace Every 12 Months
- STAGE 3 - 0x (RO Membrane TFC-RS9-12 - DISCONTINUED - Recommend converting system with the 5EZ50-RK for continued use. - Replace Every 24 Months
- STAGE 4 - 1x Carbon GAC Post Filter (CL6ROT33-BB) - Replace Every 12 Months
Note: If your Rainsoft reverse osmosis system is from 2013 or newer, it most likely is the Ultrefiner II. The Ultrefiner II requires proprietary filters that must be purchased from a Rainsoft dealer. Conversion kits to generic non-OEM replacement filters are available.
Filters may need to be replaced more often than indicated depending on incoming water contaminant levels and volume of water being treated.