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Out of curiosity, I looked up maintenance costs on RO filters. It looks like the filters that need replacing annually are $20-$30 for the set, and the membrane
by goda90 7y ago
Out of curiosity, I looked up maintenance costs on RO filters. It looks like the filters that need replacing annually are $20-$30 for the set, and the membrane that needs to be replaced every 2-5 years is $30-$50.
- JohnJamesRambo 7y agoI’ve found those guidelines to be pretty conservative. I think I’ve maybe changed the membrane once. A simple TDS (total dissolved solids) meter can be had on Amazon for <$20 that tells you if the water quality is changing over time and it is time for a change.