Answered from our dataUpdated September 25, 2026
How long do reverse osmosis filters last?
Of the 69 reverse osmosis systems we list, 64 state a filter life; the most common is 6-12 months (62).
Five have no filter life on file.
- 69 products behind this answer
- 10 brands
- updated September 25, 2026
Counted from the filter life each maker states. How we score and check
Filter life, as the makers state it
- 6-12 months 62
- Under 6 months 2
The 69 products behind this answer
Best overall score first. Each links to its full review, where the score is broken down.
- Waterdrop9here
- APEC Water Systems14here
- Express Water12here
- Aquasana1here
- iSpring24here
- US Water Systems1here
- Aquasure4here
- Kind Water Systems1here
- Crystal Quest2here
- FilterSmart1here
Some links on this page earn us a commission. It never affects our scores or rankings. How this works
What this means
- It is the maker's figure. For the part you replace most often.
- Hard or dirty water shortens it. Expect less if your water is rough.
- A guide, not a promise. Read it as the figure for ordinary water.
The ranked lists
Every product we score in these categories, in order, with the reasons for each place.
Compare them head to head
Comparisons in Reverse Osmosis between products and brands in this answer.
Related questions
- How long do water softener filters last? Of the 35 water softeners we list, 28 state a filter life; the most common is 6-12 months (14).
- How long do shower filters last? Of the 15 shower and faucet filters we list, 14 state a filter life; the most common is 6-12 months (9).
- How long do UV filters last? Of the 35 systems with a UV stage we list, 34 state a filter life; the most common is 6-12 months (28).
Counted from our data September 25, 2026 · How we score · All answers