Whole House Systems
  • Drinking Water Systems
  • Replacement Filters
  • verified_user Warranty Info
    Warranty Guarantee: Unconditional Product Guarantee for Life of the Product
    Tier1

    TIER1-US-WF0120

    Tier1 3US-AF01 Comparable Replacement Filter

    • Installs quickly and easily

    • 3US-AS01 Undersink Filter System

    • Reduces chlorine taste and odor and more!

    • Provides great tasting water for up to six months

    format_list_bulleted Features & Specs
    Package Qty: 1
    Manufacturer: Tier1
    Manufacturer's Id: US-WF0120
    UPC: 638845885591
    Actual Size (in): 10-7/16 inches (length) x 3-3/16 inches (outside diameter)
    Primary Filter Media: Activated Carbon Block
    Operating Pressure (psi): 25 - 125
    Operating Temperature (°F): 40 - 100
    Operating Temperature (°C): 4.4 - 37.8
    Warranty Guarantee: Unconditional Product Guarantee for Life of the Product
    Brand: Tier1
    Depth (in): 3.09 in
    Height (in): 3.2 in
    Length (in): 10.63 in
    Outside Diameter (in): 3.19 in
    Width (in): 3.09 in
    Media Type: Carbon Filter
    UPC's For Search: 638845885591
    Micron Rating Nominal: 0⋅5
    description Instructions
    1. Turn cartridge to the left (counterclockwise) until the cartridge comes to a complete stop, water will automatically turn off.
    2. Gently pull the cartridge down to remove.
    3. Push new filter cartridge into filter head and turn cartridge a quarter turn to the right until it stops.
    4. Turn on cold water at faucet for five minutes to flush new filter. Water may run cloudy initially but will clear.
    5. Write the date of installation on the filter and mark your calendar to replace with another filter after 6 months.
    workspace_premium Certifications
  • Independently Tested against NSF/ANSI Standard 42
  • warning_amber Contaminants Reduced
  • Chlorine
  • Rust And Corrosion
  • Sand
  • Sediment
  • Silt
  • Turbidity
  • filter_alt Filter Life
    Filter Life (gallons): 2000
    Filter Life (months): 6 months
    verified_user Warranty Info
    Warranty Guarantee: Unconditional Product Guarantee for Life of the Product
    warning

    Prop65 warning applies to products that contain carbon media. Click here for more details

    WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov


    The Tier1 3US-AF01 comparable Undersink Filter Replacement Cartridge Comparable by Tier1 is designed to fit the 3US-AS01 Undersink Filter System. This filter reduces chlorine taste and odor, sand, soil, silt, rust, and sediment found in your drinking water. Tier1 water filters install quickly and easily, no tools are required. Each filter lasts for up to six months, depending on use and water quality, making maintenance a breeze! Order today!


    TIER1-US-WF0120   is comparable with the following part number(s)

    • 3US-AF01
    • 3US-PF01
    • TIER1-US-WF0120
    • US-WF0120

    TIER1-US-WF0120   fits the following model number(s)

    • 3US-AS01
    • 3US-PS01
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