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RCSF-7 Shower Filter Cartridges (2-PACK), 20,000 Gallon Capacity

Replacement Cartridges for SF-7C Shower Filter System
Extra 15% OFF This 2-Pack + 15% OFF Auto-Shipped Cartridges!
Two replacement cartridges will be shipped to you at a 15% discount every 12 months. You may adjust your delivery frequency at any time. (Auto-Ship is available to customers in the contiguous US only.)
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Retail $72.99
NOW $56.95
(You save $16.04 )


Retail $72.99
NOW $56.95
(You save $16.04 )


FREE Shipping + 60-Day FREE Returns! (Contiguous US)

RCSF-7 Cartridge 2-Pack Highlights

  • Powerful ThermalGuard™ for Superior Chlorine Reduction
  • IAPMO Platinum Certified - NSF/ANSI Standard 177 (Trusted filtration performance!)
  • Quick & Easy Cartridge Replacement (No tools needed.)
  • Rated Capacity of 20,000 Gallons or Up to 12 Months per 2-Pack
  • Advanced Filtration with a Low Cost per Shower!
  • Includes TWO (2) RCSF-7 Shower Filter Replacement Cartridges
  • Made in the USA


WaterChef® – Premium Shower Filter Cartridges


WaterChef® Shower Filter Replacement Cartridges (RCSF-7) utilize advanced ThermalGuard™ catalytic carbon technology to substantially reduce your exposure to chlorine, leaving your body’s natural oils and proteins intact. This results in immediate cosmetic benefits, including softer and more manageable hair, healthier and smoother skin, and reduced eye irritation. Additionally, you may notice that you use less soap and conditioner, and if you use hair color products, you may also experience longer-lasting color between treatments.

easy cartridge changes

Our advanced ThermalGuard™ catalytic carbon has been specially formulated to work well over a wide variety of temperature ranges, including hot water. Unlike competitive brand filters that still use KDF media, advanced Thermalguard™ delivers great performance while keeping the cost of replacement cartridges very economical. In fact, a single WaterChef shower filter cartridge is often less than half the price of the nearest leading competitive brand!

Sadly, the water filtration industry is riddled with manufacturers that make unvalidated and exaggerated performance claims. Rest assured knowing that WaterChef has invested in independent NSF/ANSI testing and certification by one of the industry's most trusted authorities, IAPMO R&T. IAPMO requires the strictest of testing and compliance standards and is valued by consumers, manufacturers, retailers and regulatory agencies across the globe.

IAPMO Platinum Seal

WaterChef Shower Filter Systems and Cartridges are independently tested and certified by IAPMO for NSF/ANSI Standard 177 for chlorine reduction. (NOTE: Standard 177 for chlorine reduction is the only NSF/ANSI Standard that currently exists for shower filtration performance. Any additional chemical reduction claims made by other brands are not NSF/ANSI certified claims.) Don’t be fooled – TRUST is what independently validated NSF/ANSI testing and certification is all about.



Superior Chlorine Reduction over the Life of the Cartridge
IAPMO Certified Capacity for a Single Cartridge
That’s Less Than Half the Cost of Competing Brands

Based on IAPMO testing data with typical water contitions. Actual performance may vary. Cartridge life based on two 10 minute showers per day. Cost per shower based on a 10 minute shower.

WaterChef shower filters are the best on the market. They definitely get the chlorine out of the water. I plan to continue to purchase these filters for every shower in my house.

The WaterChef shower filter does an outstanding job of removing the chlorine in our water. There is a noticeable difference in the smoothness of my hair and skin. I don't have to use as much shampoo and conditioner, since I started using the filter. My students no longer tell me that I smell like a swimming pool. I will definitely be purchasing an additional filter.



Discover the Difference


  • Powerful ThermalGuard™ Catalytic Carbon for Superior Chlorine Reduction
  • Lower Cost per Shower! (Filter More, Spend Less!)
  • IAPMO Platinum Certified - NSF/ANSI Standard 177 for Chlorine Reduction (Trusted performance.)
  • Long Lasting - 10,000 Gallons or up to 6 Months per Cartridge (20,000 Gallons per 2-Pack)
  • Quick & Easy Cartridge Changes (No tools required.)
  • BPA Free & Eco-Smart
  • Additional 15% OFF with Auto-Ship! (contiguous U.S.)
  • FREE SHIPPING & RETURNS! (contiguous U.S.)
  • 5-Star Customer Care! (We stand behind our products AND our customers!)



Because the Details Matter

RCSF-7 Cartridge
  • WaterChef® RCSF-7

  • Shower

  • WaterChef® SF-7C Shower Filtration System

  • Up to 20,000 Gal. or 12 Months
    per 2-Pack

  • IAPMO Platinum Certified – NSF/ANSI Standards 177 and 372

  • Yes

  • 30 psig - 100 psig

  • 34º F - 140º F (1º C - 60º C)

  • ThermalGuard™ Catalytic Carbon

  • Yes (NSF/ANSI 372 Certified)

  • USA

  • 2 Cartridges



What Our Customers Are Saying




Have an Additional Question? Just Ask Us.  

Our industry currently has one standard for shower filtration: NSF/ANSI Standard 177, which measures the reduction of free available chlorine. (Free available chlorine is the concentration of residual chlorine present as dissolved gas, hypochlorous acid or hypochlorite ion, not combined with ammonia or other compounds that are less readily available for disinfection).

While ThermalGuard™ catalytic carbon has the ability to reduce more than just free available chlorine, as a matter of company policy, we only publish reduction claims that have been based upon testing our products against established industry standards that have been conducted by a widely recognized, third-party laboratory such as IAPMO R&T. We recognize this may appear to put WaterChef shower filters at a disadvantage because of unvalidated performance claims made by competitive products. However, we are not comfortable with making claims that do not fit these strict criteria.

NO. All of the materials used to produce WaterChef shower filters and cartridges have been carefully selected by our engineering team during the design phase. As a further precaution, WaterChef shower filters have been independently certified for complying with the material extraction requirements under NSF/ANSI Standard 177. Essentially, this part of the standard looks for any foreign substance that may be inadvertently imparted into the filtered water. If a foreign substance is present above the limit established by the standard, the product will not meet the certification requirements.

NO. Unlike many other shower filter systems that use cheap, vinyl shower hoses, WaterChef shower filter systems use only premium quality, plated stainless steel shower hoses that contain an inner liner constructed from non-toxic and odorless silicone (No PVC!). That means no “foul plastic odor” even at high temperatures.



SF-7C Premium Shower Filtration System

How to Install Your WaterChef SF-7C Shower System

How to Change Your WaterChef Shower Filter Cartridge

Trusted Water Filtration

Superior quality and performance, backed by independent validation.

  • Water Quality
  • WQ Member
  • Planet
  • Made In USA
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  • 10% OFF Filtration Systems with Auto-Ship
  • 15% OFF Filter Cartridges with Auto-Ship
  • 15% OFF Auto-Shipped Replacement Cartridges
  • FREE Shipping on ALL Auto-Ship Orders

With Auto-Ship, your replacement cartridges are delivered right to your door, when you need them. Simply adjust your next refill date or change your refill frequency to fit your needs.

Absolutely no contracts or fees – cancel anytime! You’re only billed when an order ships.