VS100-FR Vitamin C replacement cartridge
The Brondell VS100-FR is the Vitamin C replacement cartridge for the VivaSpring VS100 showerhead. It contains pharmaceutical-grade ascorbic acid crystals in a plastic housing that fits the VS100 filter body. Price: $15-$20 per cartridge at brondell.com, Amazon, and Whole Foods Market locations. Replace every 2-4 months depending on water chloramine level and shower frequency. Subscribe and save on Amazon provides approximately 10% discount with automatic delivery. Keep 2-3 spare cartridges on hand to avoid running the showerhead on an exhausted cartridge (which provides no filtration benefit).
Nayad WF02 cartridge
The Brondell Nayad WF02 is the replacement cartridge for the Nayad filtered showerhead system. It is not interchangeable with the VS100-FR -- the housing geometry differs. Price: $30-$40 per cartridge at brondell.com. Replace every 6 months at typical household use. Contact Brondell customer service at 1-877-548-3552 if the WF02 is unavailable at standard retail channels -- Brondell ships direct.
Housing cap O-ring
The VS100 filter housing cap seals with an O-ring between the cap and the housing body. If the cap drips at the seam after cartridge replacement and additional tightening does not resolve it, the O-ring is worn or displaced. Contact Brondell at 1-877-548-3552 for the correct replacement O-ring size -- Brondell ships O-rings at no charge within the warranty period. Standard O-ring sizes available at hardware stores are a backup option if the measurement can be obtained from the existing O-ring.
Brondell warranty and support
Brondell covers the VS100 and Nayad hardware under a 1-year warranty for manufacturing defects. Contact Brondell customer service at 1-877-548-3552 or via brondell.com with proof of purchase for warranty claims. For Amazon purchases, the Amazon Message Seller function reaches Brondell quickly. Cartridge depletion is not a warranty claim -- it is normal consumable use. Brondell also offers a 90-day satisfaction guarantee on direct purchases at brondell.com: if the product does not meet expectations, return it within 90 days for a full refund.