A certified, low mess choice for city water with chlorine, for owners who would rather pay more per cartridge than handle filters.
Amazon $422.992 3M Aqua-Pure whole-house filters ranked. Each one is scored and ranked against every brand in its build, so "#3 mid-size" means third of all mid-size whole-house filters here, not third among 3M Aqua-Pure's own.
3M Aqua-Pure makes 2 current whole-house filters: 2 cartridge. Prices run from $421.18 for the 3M Aqua-Pure AP904 to $422.99 for the 3M Aqua-Pure AP903. Its best-rated model: the 3M Aqua-Pure AP903 (#4 of 13 cartridge, rated 3.1).
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
3M Aqua-Pure whole-house filters 2
- 3M Aqua-Pure AP903#4 cartridgeFull review
A certified, low mess choice for city water with chlorine, for owners who would rather pay more per cartridge than handle filters.
Amazon $422.99$422.99$2.45 per 1,000 gal10 gpm100,000 gal - 3M Aqua-Pure AP904#6 cartridgeFull review
The AP903 with scale inhibitor added, for city water that is both chlorinated and hard.
Amazon $421.18$421.18$3.47 per 1,000 gal10 gpm100,000 gal