Carbon Water Filter
Explore our full line of carbon water filter replacements, including granular activated carbon (GAC) and carbon block filters. At All Filters, we have various sizes, including standard 10-inch and 20-inch filters, with 2.5-inch slim cartridges and 4.5-inch BB cartridges. Designed for reverse osmosis (RO) systems, RV water filters, whole-house filtration systems, and more, these filters effectively reduce chlorine taste and odor. Be sure to explore our NSF 42 carbon media cartridges, which provide reliable and high-performance filtration.
Size |
Rating |
SpiroPure |
Pentek |
Hydronix |
Culligan |
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|---|---|---|---|---|---|---|
Carbon Block Series |
2.5" x 5" |
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2.5" x 10" |
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2.5" x 20" |
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2.5" x 30" |
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2.5" x 40" |
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4.5" x 10" |
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4.5" x 20" |
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CC1 Series |
2.5" x 10" |
1 micron |
SP-CC1-10 |
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2.5" x 20" |
1 micron |
SP-CC1-20 |
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4.5" x 10" |
1 micron |
SP-CC1-BB |
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4.5" x 20" |
1 micron |
SP-CC1-20BB |
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GAC Series |
2.5" x 5" |
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2.5" x 10" |
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2.5" x 20" |
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4.5" x 10" |
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4.5" x 20" |
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RFC Series |
2.5" x 10" |
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2.5" x 20" |
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4.5" x 10" |
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4.5" x 20" |
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C Series |
2.5" x 5" |
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2.5" x 10" |
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2.5" x 20" |
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4.5" x 10" |
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4.5" x 20" |
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NCP Series |
2.5" x 10" |
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2.5" x 20" |
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4.5" x 10" |
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4.5" x 20" |
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Shop Carbon Water Filter Cartridges by Type
All Filters carries carbon filter cartridges in several distinct media types. Understanding the differences helps you compare options before you buy rather than guessing from a size and micron rating alone. Our carbon block (also known as powdered activated carbon), granular activated carbon (GAC), catalytic carbon, and radial flow carbon cartridges are all designed to reduce chlorine taste and odor, but each is built for a slightly different balance of filtration fineness, flow rate, and specialty performance.
Carbon Block Water Filters
Carbon block cartridges are made from powdered activated carbon compressed and bonded into a solid block, which gives them finer, more consistent filtration than loose carbon media. They're a strong choice if taste, odor, chemical, some heavy metals, and chlorine reduction are your main concerns. The compressed structure reduces channeling, which is the water finding a path of least resistance through the media instead of filtering evenly.
Granular Activated Carbon Filters
Granular activated carbon (GAC) cartridges use loose carbon granules packed into the housing, offering a higher flow rate than carbon block media since water moves through the granules with less resistance. The approximate micron rating of All Filters GAC series is 20 microns. GAC is commonly used for general taste, odor, and chlorine-related concerns in RO, RV, whole-house, and under-sink systems alike. If you're searching for an activated carbon water filter or a straightforward carbon water filter replacement, GAC is typically the right starting point.
Catalytic Carbon Filters
Catalytic carbon is a specialized form of activated carbon manufactured to more effectively break down chloramine, a chlorine-ammonia compound some municipal water systems use instead of standard chlorine for its stability over larger water distribution networks. If your water utility uses chloramine and a standard carbon filter isn't fully resolving taste or odor, SpiroPure’s 1 micron catalytic carbon cartridges are an excellent replacement for regular activated carbon. They can also handle hydrogen sulfide (that rotten egg smell) in well water. See our catalytic carbon and chloramine removal guide for more detail. Confirm system compatibility and performance specs on the product page before selecting a catalytic carbon cartridge.
Radial Flow Carbon Filters
Radial flow carbon filters are engineered so water passes through the media from the side walls across the radius, maximizing contact with the carbon while maintaining stronger flow than a standard axial-flow cartridge. This design makes radial flow carbon a good fit when you want reliable chlorine and odor reduction without the pressure drop (due to their 25 micron rating equivalent) that finer carbon block media can introduce, particularly in higher-demand whole-house or RV applications.
Choose the Right Carbon Water Filter Replacement
At All Filters, our water filter with carbon products are designed for efficient chlorine and chemical reduction, ensuring cleaner, safer drinking water for your home or business. You can find the right carbon filter cartridge for your specific system using our cross-reference chart. Our SpiroPure brand carbon water filters come in various sizes and micron ratings to fit your water filtration system. These high-quality filters offer a more cost-effective option than other branded carbon filters and activated carbon water filter products.
Match the Filter Size to Your Housing
Before ordering, check the exact size of your current cartridge or filter housing. All Filters stocks standard 10-inch and 20-inch slim (2.5") cartridges as well as 4.5-inch Big Blue (BB) sizes, covering the vast majority of residential and light commercial housings. Ordering the correct size the first time avoids a mismatched fit and a second shipment. If starting from scratch, consider water flow, usage, household size, the installation space, and replacement filter costs.
Check the Micron Rating Before You Buy
Micron rating determines what size particles a filter can capture, and it also affects water flow. A finer micron rating on a dense carbon block filter increases contact time and area but can slow flow more than a coarser, granular carbon style. Compare the micron ratings available for your size on the cross-reference chart and choose based on your water quality needs, system type, and how much flow rate matters for your application.
Confirm Compatibility with RO, RV, or Whole House Systems
All Filters carries carbon cartridges for whole-house filtration setups, reverse osmosis systems, RV water filters, and under-sink systems, but not every cartridge fits every system. Confirm your system type alongside size and micron rating before purchasing to make sure the replacement cartridge you choose is compatible with your housing or system type.
Trusted Carbon Filtration Solutions
Our website offers custom solutions to provide the best possible shopping experience, helping you find the right products. We offer competitive pricing, and our durable filters minimize the need for frequent replacements. We offer a satisfaction guarantee on many of our carbon filters along with hassle-free returns, so you can shop with peace of mind. Our team is available 7 days a week to provide customer support by phone or on live chat. Order online today and get the perfect filter for your system that provides cleaner, fresher water.
