Reverse osmosis water treatment system with stainless tanks and pumps

Water softener and under-sink RO annual service: salt, brine tank, resin, filters and tank charge

A softener needs a monthly salt check (WQA: refill when under half full), periodic brine tank cleaning, breaking any salt bridge and, on iron or bacteria-prone water, a resin cleaner used per the manufacturer. An RO system needs pre-filter changes roughly every 6-12 months, the membrane every few years depending on feed water, a yearly sanitize at filter change and a tank air charge check with the tank empty. Intervals vary by maker; the model manual wins.

Cross-checked ~60 min moderateBrands: All

Before you start

Read the manufacturer's instructions before adding bleach or cleaners; some resins and RO membranes are damaged by chlorine
Put the softener in bypass before working on the brine system, and turn off the RO feed valve before opening housings
Never mix bleach with resin cleaners or acids

Diagnostic steps

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