Filters Fast PHWF-431 Replacement for 3M Aqua-Pure AP431
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Filters Fast® PHWF-431 Replacement for 3M Aqua-Pure AP431

Retail: $34.99
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3M Aqua-Pure AP431 Whole House Scale Inhibition Cartridge

Retail: $79.99
You Save: 38%
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Product Information
Filters Fast PHWF-431
Aqua-Pure AP431

The 3M Aqua-Pure AP431 Whole House Scale Inhibition Water Filter Cartridge is designed to reduce scale build-up on hot water-using appliances such as water heaters (standard and tank-less), clothes washers and dishwashing machines, and on plumbing fixtures like faucets, pipes, and shower heads. The AP431 is as easy to change-out as a light bulb.

3M Aqua-Pure AP431 Whole House Scale Inhibition Water Filter Cartridge Specifications:

  • Part Number: AP43111
  • Product Number: AP431
  • 3M ID Number: 70020319276
  • Application: Scale Inhibition, Whole House Water Filtration
  • Filter Type: Quick Change Cartridge
  • Flow Rate: 6 gpm
  • Temperature Range: 40-100° F
  • Pressure Range: 25-125 psi
  • Inlet/Outlet Size: 3/4" NPT
  • Replace every 6 months
  • Dimensions: 10-1/4" x 2-3/4"
  • Made with FDA CFR-21 compliant materials
  • Also known as part number AP43110

The AP431 is designed for use with the following:

  • AP430 Hot Water System Protector

Compatible Parts:

The Aqua-Pure AP431 is the correct replacement for the following part numbers:

Part Number
Aqua Crest aqu-ap431
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Reviews from Trustpilot

Customer Reviews

Total Reviews: 6 Average Rating: 5 / 5.0


It works. No issues with it as I have been using the same filter brand for the past 10 years.

Collected by

Does the job it’s supposed to do.

Collected by
Patrick Murphy2022-10-03

The Aqua PureAP 431 filter, seems to help reduce the lime buildup ( scale ) in our appliances.

Collected by

Keeps scale from forming on my boiler.

Collected by
Alice Clark2022-03-07

Product works as described.

Collected by

Arrived quickly and $ was very reasonable.

Collected by

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