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S1-20BB Pentek Comparable Whole House Water Filter by Tier1

Price $23.99 List Price Price $34.99 Save 31%
Availability: In Stock
Fits PENTEK S1-20BB, American Plumber W20CLHD20 and 155305
Choose a quantity
  • 1Filter$23.99 
  • 2Filters Price $23.27 each
  • 3Filters Price $22.57 each
  • 4Filters Price $22.25 each
  • 6Filters Price $21.59 each
  • 12Filters Price $17.99 each
  • 25Filters Price $16.79 each
  • Ships fast!
  • Nominal 20-micron rating
  • Reduces sand, dirt, sediment, silt, rust and scale particles
  • Filter capacity of 24,000 gallons replace filter every 6 months
See more product details
S1-20BB Pentek Comparable Whole House Water Filter by Tier1 is available to buy in increments of 1
The S1-20BB Pentek Comparable Whole House Water Filter by Tier1 is ideal for 20 x 5 inch general water filtration and is not recommended for use with well water. Reduce the sand, dirt, sediment, silt, rust and scale particles that can disrupt your home water use. First time and veteran users alike can experience this excellent product with the protection of a 30 day 100% satisfaction guarantee. Order today!

Experience the Tier1 Difference

Tier1 manufactures high-quality filtration and household products. We take creating and maintaining a healthy home seriously. Products must undergo rigorous testing and meet demanding quality expectations in order to earn the Tier1 badge. Every purchase is backed by the Tier1® Guarantee:

  • Guaranteed Fit
  • Guaranteed Quality
  • Guaranteed Price
Package Qty1
Used In BrandsPentek, Tier1
Manufacturer's IdS20-20
Advertised Size (in)20 x 4-1/2
Actual Size (in)20 inches (length) x 4 1/2 inches (outside diameter)
Actual Size (cm)50.8 x 11.43
MediaPleated Cellulose
Primary Filter MediaPleated Cellulose
Filter Life (gallons)24,000
Filter Life (liters)90,849.84
Filter Life (months)6 months
Micron Rating (Nominal)20
Operating Temperature (°F)40 - 145
Operating Temperature (°C)4.4 - 62.8
Flow Rate (gpm)10
Flow Rate (lpm)37.854
ColorBlue / White
Warranty GuaranteeUnconditional Product Guarantee for Life of the Product
IncludesOne 20 X 4.5 Inch 20 Micron Pleated Cellulose Replacement Filter by Tier1
Primary Filter MediaPleated Cellulose

Reduced Contaminants

The TIER1-S20-20 reduces the following contaminants:

  • Dirt
  • Particles
  • Sand
  • Sediment
  • Silt

The TIER1-S20-20 is comparable with the following part numbers

American Plumber W20CLHD20


  1. Turn off water supply. Press red pressure-relief button (if present).
  2. Unscrew housing. Remove large o-ring, wipe clean and set aside.
  3. Discard used filter cartridge. Wash housing with dish soap and warm water using a nonabrasive sponge or cloth. Rinse thoroughly. Fill 1/3 with water. Add about 1 tablespoon of bleach and scrub to disinfect. Rinse thoroughly.
  4. Lubricate o-ring with clean silicone grease. Change o-ring if any damage cuts or degradation are present. Insert o-ring in groove.
  5. Insert new filter cartridge.
  6. Screw housing onto the cap and hand-tighten. Do not over tighten. Make sure cap standpipe slips into cartridge.
  7. Turn on water supply. Press pressure-relief button (if present). Check for leaks before leaving installation.