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AP904 3M Aqua-Pure Carbon Water Filter

Price $365.99 List Price Price $522.99 Save 30%
Availability: In Stock - Free Shipping
Installs onto water line
  • Ships fast!
  • Reduces issues with hardness and scale
  • Built with corrosion resistant material
  • Protected by a 25-year warranty
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Built to be able to treat up to 100,000 gallons of water, the AP904 3M Aqua-Pure carbon water filter is ideal for use in homes or light commercial applications where both hardness and scaling issues are causing issues. Made with durable and corrosion resistant material, this filter comes complete with an electronic change indicator and product protection, via a 25 year manufacturer warranty. Protect your appliances and fixtures from issues related to water hardness by ordering the AP904 3M Aqua-Pure carbon water filter from us today!
Package Qty1
Used In BrandsAqua-Pure
Manufacturer's Id5621104
Advertised Size (in)20 x 2-1/2
MediaCarbon Block with Non-Woven Pleat Media and Scale Inhibitor
Primary Filter MediaActivated Carbon Block
Filter Life (gallons)100,000
Filter Life (liters)378,541.18
Filter Life (months)12 months
Micron Rating (Nominal)5
Operating Pressure (psi)25 - 125
Operating Temperature (°F)40 - 100
Operating Temperature (°C)4.4 - 37.8
Flow Rate (gpm)20
Flow Rate (lpm)75.71
Fitting TypeNPT
Fitting Size (inches)1 inch
Warranty Guarantee25-year limited warranty on stainless steel filter head, 1-year limited warranty on disposable filter cartridge
Includes304 Stainless Steel head assembly with mounting bracket, AP917HD-S filter cartridge

Reduced Contaminants

The AQUA-PURE-AP904 reduces the following contaminants:

  • Chlorine Taste & Odor
  • Dirt
  • Hard Scale
  • Particulates
  • Rust and Corrosion

The AQUA-PURE-AP904 is comparable with the following part numbers


The AQUA-PURE-AP904 fits the following model numbers


Installation Guide


  1. Shut off main water supply. Drain water from water lines and open faucet downstream of install location.
  2. Remove filter cartridge from filter head and set aside.
  3. Cut pipe to length needed to install filter and recommended bypass.
  4. Assemble filter on bypass system. Use three three shut-off valves and one filtration unit. Use copper pipe and sweated connections to assemble system.
  5. Install system (valves, piping and filter head) into water supply system.
  6. Use supplied bracket or pipe hangers to support the system.
  7. Install filter cartridge into head. Make sure internal key ring is positioned correctly by rotating to the right until it snaps into place.
  8. While water is running thru faucet, close valves 2 and 3 valve, open valve 1. Make sure no leaks allow water to flow through faucet.
  9. While water is running through faucet, close valve 1, open valves 2 and 3. Allow filter to fill up.
  10. Check for leaks. If no leaks occur, open faucet and let run for 15 minutes or until air is flushed from system.