Pentek EP-20 Carbon Water Filter Cartridge – 20-Inch, 5 Micron, 12,000 Gallon Capacity (Whole-House)

Upgrade your home water with the Pentek EP-20 carbon filter

The Pentek EP-20 is a whole-house carbon block cartridge designed to deliver clearer, better-tasting water across taps. Built around a bonded powdered activated carbon (PAC) core, this 20-inch cartridge balances adsorption capacity with steady flow, so you can enjoy water that feels crisper and more vibrant every time you turn on the faucet.

With a nominal 5 micron filtration rating, the EP-20 targets larger particles while maximizing the carbon surface area for adsorption. A high porosity design helps keep the cartridge flowing smoothly even as it captures contaminants, reducing the chance of premature pressure drop and enabling more of the carbon to do its job before replacement is needed.

Key benefits you may notice

• Greater chlorine taste and odor reduction compared to many 10 micron blocks, helping water feel cleaner at the point of use
• Seamless compatibility with all 20" standard housings, making upgrades straightforward
• High porosity design to minimize premature plugging while adsorbing contaminants
• NSF International tested and certified for added assurance in performance and safety
• 12,000 gallon capacity, with recommended replacement every ~3 months or when you notice changes in flow or quality

To further extend cartridge life, Pentek includes a uniquely formulated polyolefin bilaminate pre-filter. This pre-filter traps sediment before it reaches the carbon block, helping maintain filtration efficiency and reducing the frequency of cartridge changes in everyday use.

Typical use cases span residential homes, small-scale commercial settings, and light-duty industrial applications where consistent water quality across fixtures matters. While results can vary with local water conditions, the EP-20 is designed to offer a practical, maintenance-friendly filtration solution that supports everyday hydration, cooking, and beverage preparation with improved taste and odor characteristics.

What to expect during installation and maintenance

• Install in standard 20" housings to replace existing carbon filters without changing mounting hardware
• Monitor water quality and pressure; anticipate replacement every three months or sooner if you notice a drop in performance