C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1

Price $13.99
Availability: Out of stock
Fits most standard 20 x 2.5-inch housings
Choose a quantity
  • 1 Filter $13.99  
  • 2 Filters Price $13.55 each
  • 4 Filters Price $12.55 each
  • Powdered Activated Carbon filter media helps capture particles 5 micron or larger
  • Ensures quality water throughout your home
  • Easy installation for a frustration-free return to better water
See more product details
The C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1 is ideal for 20 x 2.5-inch whole house water filtration systems and commercial applications. Reduce the sediment, chlorine taste and odor that 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 Qty 1
Used In Brands FilterCor, Pentek, Tier1
Manufacturer's Id C5-20
UPC 700355940975
Advertised Size (in) 20 x 2-1/2
Actual Size (in) 20 inches (length) x 2 1/2 inches (outside diameter)
Actual Size (cm) 50.8 x 6.35
Media Carbon Impregnated Cellulose
Primary Filter Media Carbon-Impregnated Fabric
Filter Life (gallons) 5,000
Filter Life (liters) 18,927.1
Micron Rating (Nominal) 5
Operating Temperature (°F) 40 - 125
Operating Temperature (°C) 4.4 - 51.7
Flow Rate (gpm) 5
Flow Rate (lpm) 18.9271
Warranty Guarantee Unconditional Product Guarantee for Life of the Product

The TIER1-C5-20 is comparable with the following part numbers

Pentek C1-20


  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
  4. Fill 1/3 with water. Add about 1 tablespoon of bleach and scrub to disinfect. Rinse thoroughly
  5. Lubricate o-ring with clean silicone grease. Change o-ring if any damage cuts or degradation are present. Insert o-ring in groove
  6. NOTE: This step is important to ensure a proper housing seal. Make certain the o-ring is seated level in the groove
  7. Insert new filter cartridge
  8. Screw housing onto the cap and hand-tighten. Do not over tighten. Make sure cap standpipe slips into cartridge
  9. Turn on water supply. Press pressure-relief button (if present). Check for leaks before leaving installation

Reset Instructions