9 Best Carbon Blocks: Clearer, Fresher Water Now

Looking for the best carbon block filters? I switched to a carbon block filter and instantly enjoyed clearer, fresher‑tasting water at home.

Are you searching for better water? Do you want cleaner, fresher results? We can help you find the best carbon block filters.

I remember when my water had a funny taste. It made everything taste off. After one simple change everything was better.

We will show you top choices. Learn about chlorine removal and micron ratings. Discover long-lasting performance.

List of Top 9 Carbon Blocks

Image Title Best For Price
5 Micron 10 5 Micron 10″ x 2.5″ Whole House CTO Carbon Block Water Filter Cartridge Replacement for SCWH-5, AO-WH-PRE-RCP2, WHKF-WHWC, FXWTC, FX12P, WFPFC8002, WFPFC9001, 3WH-STDCW-F02, W5CIP (Pack of 4)

This whole house water filter cartridge is perfect for homeowners who need to replace old filters in their home water systems. It helps families get better-tasting water by removing chlorine, bad smells, and tiny dirt particles.

Matrikx 10 inch CTO Carbon Block Filter now with Chloramine Reduction, 2.5 inch x 10 inch, 32-250-10-MATRIKX, Gray Matrikx 10 inch CTO Carbon Block Filter now with Chloramine Reduction, 2.5 inch x 10 inch, 32-250-10-MATRIKX, Gray

The Matrikx 10 inch CTO Carbon Block Filter is perfect for families and homeowners who need clean, safe drinking water free from chlorine, chloramine, PFAS, and sediment. It fits well in homes where tap water has these issues.

Pentair Pentek EP-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 20 Pentair Pentek EP-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 20″ x 4.5″, 5

Tired of bad-tasting water in your whole house? The Pentair Pentek EP-20BB Big Blue Carbon Water Filter is perfect for you! It gives you cleaner, better-tasting water from every tap.

Membrane Solutions 5 Micron 2.5 Membrane Solutions 5 Micron 2.5″ x 10″ CTO Carbon Block Water Filter Cartridge Replacement for Whole House Filtration Systems, Compatible with WFPFC8002, WFPFC9001, FXWTC, WHKF-WHWC, 4-Pack

This 5 micron carbon filter pack is perfect for homeowners who want clean, tasty water in their whole house systems, under-sink filters, or RV setups. It’s also great for families who use it to make fresh coffee, ice, or drinks from tap water with chlorine.

iSpring FC15B High Capacity Activated CTO Carbon Block Filter for Under Sink and Whole House Water Filtration System, 5-Micron 10 iSpring FC15B High Capacity Activated CTO Carbon Block Filter for Under Sink and Whole House Water Filtration System, 5-Micron 10″x4.5″

This high-capacity filter is perfect for homeowners who want to remove chlorine, bad tastes, and odors from their water using an under sink or whole house system. It’s also ideal for those seeking a long-life filter that lasts up to 50,000 gallons to keep water clean at every faucet.

iSpring FC15 5 Micron 10 iSpring FC15 5 Micron 10″ Replacement CTO Carbon Block Water Filter Cartridge for Under Sink Reverse Osmosis RO Filtration System,10″ x 2-1/2″, White

Tired of bad-tasting water? This FC15 carbon filter is perfect for anyone wanting to remove chlorine, odors, and organic compounds from their drinking water. It fits most standard 10-inch under-sink systems, so you can enjoy cleaner, better-tasting water right away!

iSpring FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” for Sediment & Chlorine Removal iSpring FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” for Sediment & Chlorine Removal

Is your water smelly or funny tasting? Do you want to protect your appliances? Then the iSpring FC25B is perfect for you. It gives you cleaner, better-tasting water for your whole house.

Pentair Pentek EP-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 10 Pentair Pentek EP-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 10″ x 4.5″, 5 Micron

This water filter is perfect for anyone with a whole-house system. It helps people enjoy cleaner water with less chlorine taste.

Pentair Pentek EPM-10 Carbon Water Filter, 10-Inch, Under Sink Modified Epsilon Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 10 Pentair Pentek EPM-10 Carbon Water Filter, 10-Inch, Under Sink Modified Epsilon Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 10″ x 2.5″, 10 Micron

This Pentair Pentek EPM-10 Carbon Water Filter is perfect for anyone with an under-sink water filter system who wants an easy and cheap way to cut down on chlorine, bad tastes, smells, and small dirt in their water. It fits most 10-inch housings and can clean up to 3,000 gallons before a swap.

Detailed Reviews

These 9 carbon block filters are top‑rated. Expert analysis and real customer feedback guide the picks. Each model offers clear taste, strong chlorine removal, and easy installation. Trust this guide to find the perfect filter for you.

1. 5 Micron 10″ x 2.5″ Whole House CTO Carbon Block Water Filter Cartridge Replacement for SCWH-5, AO-WH-PRE-RCP2, WHKF-WHWC, FXWTC, FX12P, WFPFC8002, WFPFC9001, 3WH-STDCW-F02, W5CIP (Pack of 4)

5 Micron 10

This carbon block filter uses premium coconut shell activated carbon to clean water. It removes chlorine, VOCs, bad tastes, and odors for better drink.

It has 5 micron filtration that cuts down tiny particles like sediment and sand. The polypropylene backing and netting make it strong. It fits whole house systems and reverse osmosis setups.

It works with many standard housings from brands like GE and Whirlpool. Replace each cartridge every 3 to 4 months for one year of use.

Pros Cons
  • Premium carbon removes chlorine, VOCs, and bad tastes.
  • 5 micron filter catches tiny particles like sand and silt.
  • Durable design with reinforcing layers for long life.
  • Wide compatibility fits many filter systems and brands.
  • Pack of four lasts a full year with easy changes.
  • Frequent replacement needed every 3-4 months.
  • Not recommended for whole-house use at point of entry.
  • Unsuitable for untreated well water supplies.

Perfect For:

This whole house water filter cartridge is perfect for homeowners who need to replace old filters in their home water systems. It helps families get better-tasting water by removing chlorine, bad smells, and tiny dirt particles.

Ready to Purchase?

2. Matrikx 10 inch CTO Carbon Block Filter now with Chloramine Reduction, 2.5 inch x 10 inch, 32-250-10-MATRIKX, Gray

Matrikx 10 inch CTO Carbon Block Filter now with Chloramine Reduction, 2.5 inch x 10 inch, 32-250-10-MATRIKX, Gray

Upgrade your water with the Matrikx 10 inch CTO Carbon Block Filter. It now fights chlorine, PFAS, and chloramine better than ever. This gray filter is 2.5 inches by 10 inches and easy to install.

Trust its 5 micron power to clear out sand, rust, and dirt. It cuts chloramine levels by up to 83% in tough tests. Enjoy 12,000 gallons of chlorine removal and 3,250 gallons of PFAS cleanup.

NSF and WQA say it’s safe and green. Get pure water that tastes great every day.

Pros Cons
  • Chlorine, PFAS, and Chloramine reduction: Get pure, safe water now!
  • Reduces sand, rust, and sediment easily and quickly.
  • Certified safe: Giving you true peace of mind.
  • Long-lasting: Filters up to 12,000 gallons of water.
  • Needs replacement.
  • Lower flow impacts use.
  • Limited capacity for chloramine.

Perfect For:

The Matrikx 10 inch CTO Carbon Block Filter is perfect for families and homeowners who need clean, safe drinking water free from chlorine, chloramine, PFAS, and sediment. It fits well in homes where tap water has these issues.

Ready to Purchase?

3. Pentair Pentek EP-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 20″ x 4.5″, 5

Pentair Pentek EP-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 20

The Pentair Pentek EP-20BB Big Blue carbon filter removes more chlorine taste and odor than other 10 micron carbon blocks. It fits any 20-inch big blue housing, so you can swap it in easily.

This filter has a high-porosity design that keeps working well, even in tough water. It is NSF certified for safe use and lasts up to 44,000 gallons. Replace it each year or when the water flow slows.

Get clean water for your home today. Try the EP-20BB for fresh tasting results. You will love the difference.

Pros Cons
  • Get better chlorine taste and odor reduction.
  • Fits all 20″ Big Blue housings easily.
  • Keeps from plugging with its high porosity design.
  • Certified for worry-free water filtration!
  • Filters 44,000 gallons; get a whole year of use.
  • Requires a Big Blue housing to function properly.
  • Annual replacement adds to long-term costs.
  • May reduce water flow in some homes.

Perfect For:

Tired of bad-tasting water in your whole house? The Pentair Pentek EP-20BB Big Blue Carbon Water Filter is perfect for you! It gives you cleaner, better-tasting water from every tap.

Ready to Purchase?

4. Membrane Solutions 5 Micron 2.5″ x 10″ CTO Carbon Block Water Filter Cartridge Replacement for Whole House Filtration Systems, Compatible with WFPFC8002, WFPFC9001, FXWTC, WHKF-WHWC, 4-Pack

Membrane Solutions 5 Micron 2.5

Get pure, fresh water every day with the Membrane Solutions 5 Micron CTO carbon filter cartridge. This top-quality 4-pack fits most standard filtration systems for homes, RVs, and more.

It blocks dirt and chemicals like rust, sand, and chlorine to make water taste great. The activated carbon lasts up to 15,000 gallons, so you save on replacements. Install it easily yourself and enjoy clean water for your fridge and coffee maker.

Order your pack of 4 now and protect your family from bad water. You will love the better taste in every sip without more effort.

Pros Cons
  • Universal fit for most water filters.
  • Premium carbon enhances water quality.
  • Removes impurities and bad odors.
  • Lasts up to 15,000 gallons.
  • Easy to install yourself.
  • May clog quickly in very dirty water.
  • Doesn’t remove heavy metals or dissolved solids.
  • Replacement every 3-6 months can be costly.

Perfect For:

This 5 micron carbon filter pack is perfect for homeowners who want clean, tasty water in their whole house systems, under-sink filters, or RV setups. It’s also great for families who use it to make fresh coffee, ice, or drinks from tap water with chlorine.

Ready to Purchase?

5. iSpring FC15B High Capacity Activated CTO Carbon Block Filter for Under Sink and Whole House Water Filtration System, 5-Micron 10″x4.5″

iSpring FC15B High Capacity Activated CTO Carbon Block Filter for Under Sink and Whole House Water Filtration System, 5-Micron 10

Ready for water so pure, it sparkles? The iSpring FC15B filter delivers. It’s a simple upgrade for cleaner, better-tasting water. Get ready to enjoy the difference!

This filter removes chlorine, odors, and more. Your water will be fresher and healthier.

It’s easy to install and made to last. Enjoy great water from every tap. Order your iSpring filter now!

Pros Cons
  • Premium coconut carbon blocks harmful contaminants perfectly.
  • Removes 99% of chlorine for pure, fresh water.
  • Filters up to 50,000 gallons of water easily.
  • Fits standard systems and lasts six months.
  • Backs with lifetime support and money-back guarantee.
  • Filter life depends on your water quality.
  • Must replace every 6 months for best use.
  • Might not fit all 10″ x 4.5″ housings.

Perfect For:

This high-capacity filter is perfect for homeowners who want to remove chlorine, bad tastes, and odors from their water using an under sink or whole house system. It’s also ideal for those seeking a long-life filter that lasts up to 50,000 gallons to keep water clean at every faucet.

Ready to Purchase?

6. iSpring FC15 5 Micron 10″ Replacement CTO Carbon Block Water Filter Cartridge for Under Sink Reverse Osmosis RO Filtration System,10″ x 2-1/2″, White

iSpring FC15 5 Micron 10

Protect your family from chlorine and bad tastes in water. The iSpring FC15 carbon block filter removes up to 99% of chlorine and many other harmful substances.

It fits most standard 10-inch reverse osmosis systems. This filter uses coconut shell carbon for strong cleaning power. We offer a lifetime warranty and free tech support.

Pros Cons
  • Enjoy cleaner, better-tasting water for your family, always!
  • Keep your water safe and smell-free from contaminants.
  • Fits most standard 10″ water filtration systems easily.
  • Awesome tech support and warranty for peace of mind.
  • Keeps healthy minerals; does NOT reduce Total Dissolved Solids.
  • Doesn’t lower TDS in your water.
  • Must unwrap before using; extra step!
  • Replacing too soon impacts filter life.

Perfect For:

Tired of bad-tasting water? This FC15 carbon filter is perfect for anyone wanting to remove chlorine, odors, and organic compounds from their drinking water. It fits most standard 10-inch under-sink systems, so you can enjoy cleaner, better-tasting water right away!

Ready to Purchase?

7. iSpring FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” for Sediment & Chlorine Removal

iSpring FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” for Sediment & Chlorine Removal

Tired of smelly water? The iSpring FC25B filter removes up to 99% of chlorine. Enjoy better-tasting water right from your tap!

This 20” x 4.5” filter fits most standard housings. It has a minimal impact on water flow, up to 15 GPM.

Get top-notch quality with coconut shell carbon. It’s tested to meet NSF/ANSI standards. Enjoy fresh, clean water today!

Pros Cons
  • Eliminates chlorine and bad tastes effectively.
  • Fits standard 20” x 4.5” housings easily.
  • Made with high-quality coconut carbon for lasting performance.
  • Backed by lifetime tech support and peace of mind.
  • Keeps healthy minerals in your water.
  • Doesn’t remove Total Dissolved Solids.
  • Needs a separate housing to install.
  • Requires regular filter changes.

Perfect For:

Is your water smelly or funny tasting? Do you want to protect your appliances? Then the iSpring FC25B is perfect for you. It gives you cleaner, better-tasting water for your whole house.

Ready to Purchase?

8. Pentair Pentek EP-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 10″ x 4.5″, 5 Micron

Pentair Pentek EP-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 10

Is your water less than perfect? The Pentair Pentek EP-BB filter is here to help.

This high-quality filter fits all standard 10″ Big Blue housings. It is also NSF certified for your peace of mind. Enjoy cleaner, better-tasting water from every tap!

It drastically reduces chlorine taste and odor. The design stops clogs before they happen. You get up to 22,000 gallons of fresh water!

Pros Cons
  • Superior chlorine and odor removal.
  • Fits all 10-inch blue housings.
  • Prevents clogging for full capacity.
  • Certified safe by NSF standards.
  • Filters up to 22,000 gallons easily.
  • Not effective against heavy metals or sediments.
  • Needs regular replacement every 6 months.
  • Larger size may not fit smaller housings.

Perfect For:

This water filter is perfect for anyone with a whole-house system. It helps people enjoy cleaner water with less chlorine taste.

Ready to Purchase?

9. Pentair Pentek EPM-10 Carbon Water Filter, 10-Inch, Under Sink Modified Epsilon Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 10″ x 2.5″, 10 Micron

Pentair Pentek EPM-10 Carbon Water Filter, 10-Inch, Under Sink Modified Epsilon Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 10

Explore the Pentair Pentek EPM-10 Carbon Water Filter, a savvy pick for clean water at home. This cartridge slashes chlorine, odd tastes, and bad smells while trapping dirt and particles.

It snaps into any 10-inch housing, making swaps a breeze. With high-porosity design, it stops clogs and keeps flow steady. Plus, it’s NSF certified for safe, pure results.

It lasts for 3,000 gallons. Change it every 3 months. Check for low pressure or poor quality too.

Pros Cons
  • Saves you money with great filtration.
  • Fits most 10″ filter housings easily.
  • High flow rate keeps water pressure strong.
  • Certified safe for your home water use.
  • Enjoy 3,000 gallons of clear, fresh water.
  • Just 3 months of use before needing replacement.
  • 3,000 gallon capacity might not suit heavy water users.

Perfect For:

This Pentair Pentek EPM-10 Carbon Water Filter is perfect for anyone with an under-sink water filter system who wants an easy and cheap way to cut down on chlorine, bad tastes, smells, and small dirt in their water. It fits most 10-inch housings and can clean up to 3,000 gallons before a swap.

Ready to Purchase?

Buying Guide

Clean water feels good. It tastes fresh. It makes coffee better.

I once had a filter that left a bad taste. I swapped it for a carbon block. The change was clear.

  • Micron rating: This tells how small the filter can catch. A 5 micron rating stops sand and rust. It is good for most homes.

  • Carbon type: Coconut shell carbon is strong. It pulls out chlorine and bad smells. It lasts longer than cheap carbon.

  • Flow rate: Look for a filter that keeps water fast. A low flow can slow the tap. Choose a flow that matches your house.

  • Lifespan: This is how many gallons the filter can clean. A filter that lasts 10 000 gallons needs less change. It saves money.

  • Compatibility: Check the size of the filter. It must fit your housing. Most are 10 inches long and 2.5 inches wide.

  • Certifications: Look for NSF or WQA marks. They show the filter is tested. They give peace of mind.

  • Price: A cheap filter may need frequent change. A higher price can mean longer life. Balance cost and use.

  • Installation: Some filters need tools. Others snap in. Pick one you can do yourself.

These points help you pick the best carbon block. Use them to get clean, fresh water at home.