4.5 x 20 CTO Carbon Block Whole House Water Filter Replacement Cartridge for Cleaner Fresh Tasting Water

Enjoy fresher, cleaner water throughout your home with the CTO Carbon Block Whole House Water Filter Replacement Cartridge. Designed for homeowners using whole home filtration systems, this whole house water filter cartridge helps reduce chlorine, odors, and unpleasant tastes for a better everyday water experience. Its high-density activated carbon block delivers fine filtration performance while maintaining smooth water flow. The universal 4.5" x 20" design makes it an easy replacement choice for many compatible filtration housings.

Key Features

• Advanced CTO activated carbon block helps reduce chlorine, odors, bad taste, and unwanted impurities for fresher household water.
• High-density carbon structure provides up to 5-micron filtration, capturing small particles and improving water quality.
• Standard 4.5" x 20" size fits most compatible water filter replacement cartridge housings and whole home filtration systems for simple installation.
• Filters up to 100,000 gallons with an estimated 9–12 month service life depending on water conditions, helping reduce frequent replacements.
• Made without glue, adhesives, or harmful chemicals, helping deliver clean and reliable filtration with every use.

Why Choose Our 4.5 x 20 CTO Carbon Block Whole House Water Filter Replacement Cartridge

Unlike standard filter cartridges that only capture basic particles, this CTO carbon block cartridge focuses on improving water taste, odor, and chlorine reduction for a more enjoyable home water experience. Its universal sizing, long filtration capacity, and easy replacement design provide excellent value compared with frequently replaced lower-capacity filters. It is a practical upgrade for families looking for dependable whole-home water filtration performance.

Perfect For (Occasions & Uses)

Ideal for homeowners, rental properties, offices, workshops, and families using 3-stage whole home water filtration systems. Perfect for replacing worn-out carbon cartridges to maintain better tasting drinking water, cleaner showers, and improved overall household water quality.

Refresh Your Home Water Experience Today

Bring back the taste and freshness your home water deserves with the 4.5 x 20 CTO Carbon Block Whole House Water Filter Replacement Cartridge. Order today and enjoy reliable filtration, smoother water flow, and cleaner water throughout your home.