The Watts WQC4RO13-100 Kwik-Change replacement filter kit delivers a complete four-stage filtration solution for your 13-inch 100 GPD reverse osmosis system. Engineered with double o-ring seals and internal shutoff valves, this kit eliminates leaks and simplifies cartridge replacement across all filtration stages.
SPECIFICATIONS
Complete Kit Components
| Model Number | Watts WQC4RO13-100 |
| System Compatibility | 13-inch 100 GPD Kwik-Change (Not Premier) |
| Stage 1 (WQCSC13) | 5 micron sediment filter, removes dirt, rust, sediment |
| Stage 2 (WQCCC13) | 10 micron carbon block, removes chlorine, taste, odor |
| Stage 3 (WQCM13-100) | 100 GPD reverse osmosis membrane |
| Stage 4 (WQCGAC13) | 10 micron GAC post-filter, polishes taste and odor |
| Seal Design | Double o-rings with internal shutoff valves |
| Replacement Interval | Every 6 months (sediment, carbon); membrane as needed |
INSTALLATION & USE
Filter Replacement Procedure
- Shut off water supply to the RO system and open faucet to relieve pressure
- Twist and remove old cartridges counterclockwise; internal valves automatically stop water flow
- Insert new cartridges and twist clockwise until fully seated and locked
- Turn water supply back on and flush system for 5 minutes to purge air and carbon fines
COMPATIBILITY
System Requirements
This Watts WQC4RO13-100 kit is designed exclusively for 13-inch Kwik-Change reverse osmosis systems rated at 100 gallons per day. It is not compatible with Watts Premier series systems or standard twist-in housings. Verify your system uses Kwik-Change cartridges with double o-ring seals before ordering.
🔧 Pro Tip: Mark your calendar when installing this kit. While carbon and sediment filters should be replaced every 6 months, the RO membrane (WQCM13-100) typically lasts 2-3 years depending on water quality. Replace only the filters that need it to save money without compromising performance.
