The Tier1 EPM-20BB is a 20-micron carbon block filter designed to reduce chlorine taste and odor, sediment, and other contaminants from your entire home's water supply. This micron rating strikes an effective balance between strong contaminant reduction and good flow rate, making it ideal for whole house applications where you need filtered water at multiple fixtures simultaneously without significant pressure drop.

The Tier1 EPM-20BB measures 20 inches in length and 4.5 inches in diameter (often called a "Big Blue" size). It is engineered as a direct comparable replacement for the Pentek EPM-20BB and fits any standard 20" x 4.5" Big Blue whole house filter housing. Always verify your housing dimensions before ordering to ensure proper fitment and sealing.

The Tier1 EPM-20BB has a filtration life of approximately 6 months or up to 30,000 gallons, whichever comes first, under typical household conditions. Actual lifespan depends on your incoming water quality, sediment levels, and household water usage. Homes with high chlorine content or heavy daily water consumption may need to replace the filter more frequently to maintain optimal performance and flow rate.

The EPM-20BB uses a premium coconut shell carbon block to effectively reduce chlorine taste and odor, volatile organic compounds (VOCs), sediment, rust, dirt, and other particulates down to 20 microns. It delivers cleaner, better-tasting water throughout your entire home — from kitchen faucets and showers to laundry appliances — while helping protect plumbing and fixtures from chlorine damage.

The Tier1 EPM-20BB is manufactured with components tested to NSF/ANSI Standard 42 for material safety and chlorine reduction performance. It supports a flow rate of up to 8 gallons per minute (GPM), which is more than sufficient to handle simultaneous water demand in most households without a noticeable drop in pressure, making it a reliable choice for whole house filtration.