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AquaCrest Replacement for Aqua-Pure AP431 Scale Inhibition Cartridge

AquaCrest Replacement for Aqua-Pure AP431 Scale Inhibition Cartridge


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  • Scale and corrosion inhibition helps extend life of water heaters
  • Disposable cartridge inhibits scale for up to six months before replacement
  • Slow-dissolve rate provides consistent dosing and long cartridge life
AquaCrest AQU-AP431 is replacement for Aqua-Pure AP431 Scale Inhibition Cartridge. The AQU-AP431 is made from premium material to extend life of water heaters.

*Please note this is a compatible water filter. The water filter is not sourced by or sponsored by 3M. The manufacturer's name and part numbers have been used for reference purposes only. AquaCrest is an independent brand.

Customer Reviews
*Some reviews are from for the same product.
Great Filter

Easy to install, great packaging and date labels.
Good Value
Fits fine, good value should last as long as the 3M brand.
Works great
protects water heater and water lines from scale
We have two on demand electric water heaters, each in a different building. We originally installed water treatment units from a major manufacturer and switched from their OEM cartridge to Aquacrest about two years ago. The Aquacrest cartridge cost is less than half of the OEM cartridge and so far has performed in an equal manner.