Brondell Circle Replacement Filters
Brondell Circle filter set: CF Stage 1 (sediment + carbon pre-filter, 6-month life, $35--$45) and RO Stage 2 membrane + post-carbon (12-month life, $55--$75). Annual maintenance cost: $90--$120. Available at brondell.com and Amazon. Brondell offers a filter subscription plan with 15% discount for auto-delivery. Brondell Cypress carbon filter replacement set ($40--$60 for 6-month cartridge set): at brondell.com and Amazon. All Brondell H2O+ filters use proprietary cartridges -- standard-size filters from other brands do not fit Brondell housings. Brondell provides a 1-year warranty on Circle electronics and a 5-year warranty on the housing and tubing.