How often should I replace the filters?

Your M1 has a Smart Filter Replacement Indicator that measures water flow and tells you exactly when to replace filters, which is every 3000 liters (793 gallons) for PAC and CF filters, and 6000 liters (1585 gallons) for the RO Filter. A filter club subscription will send your filters right on time and can be adjusted after purchase to any delivery schedule you like based on your usage. Don’t forget to reset the filter life indicator after replacing the filters!