NEW and patented refill process! When properly installed and maintained the granules effectively prevent the release of minerals in the air.
- Granules should be replaced every 2 to 3 months; hard water usage may require more frequent replacement.
- One box includes 3 single refill packets - use just one packet per refill.
- For use with the Air-O-Swiss demineralization cartridge AOS 7531.
Air-O-Swiss offers two options for replacing the demineralization cartridge: Replace the whole cartridge with a new part (model AOS 7531) or use replacement granules to extend the life of the cartridge.