If you’re tired of unpleasant-tasting tap water and want a simple, affordable way to enjoy cleaner, fresher water at home, the American Plumber W5CIP undersink filter replacement cartridge might be exactly what you need. This high-performance carbon filter is known for reducing chlorine, unpleasant odors, and other impurities from drinking water. In this guide, we’ll walk you through everything you should know about the W5CIP filter — from features and benefits to installation and replacement tips.
What is the American Plumber W5CIP Undersink Filter?
The W5CIP is a coconut-shell carbon-based water filter designed for undersink water filtration systems. It’s part of American Plumber’s popular W-Series replacement filters, known for improving the taste, smell, and quality of water in residential homes. The cartridge fits into standard 10-inch filter housings, making it a reliable and convenient choice.
Key Features of the W5CIP Replacement Cartridge
High Filtration Capacity
The W5CIP filter is crafted to handle a significant filtration load, ensuring your water remains fresh and clean for months.
Coconut Shell Carbon Technology
Unlike standard filters, it uses premium coconut shell carbon, which is known for stronger absorption properties and a more eco-friendly filtration process.
Universal Fit Compatibility
It fits most standard 10” undersink filter housings, making replacement simple and cost-effective.
Benefits of Using the W5CIP Filter Cartridge
Improves Taste & Odor
If your tap water tastes metallic or smells like chlorine, this filter eliminates those issues instantly.
Reduces Chlorine and Contaminants
The carbon block filtration removes sediment, chlorine, and volatile organic compounds (VOCs), making drinking water safer.
Safe and Clean Drinking Water
Perfect for cooking, drinking, coffee makers, and refrigerators with waterlines.
Specifications of the American Plumber W5CIP
- Filter Type: Carbon Block Filter
- Dimensions: 10″ x 2.5″
- Micron Rating: 5 Microns
- Capacity: Up to 12,000 gallons
- Technology: Coconut Shell Carbon
- Flow Rate: 1–2 GPM
Which Systems Use the W5CIP Filter Cartridge?
The W5CIP fits most standard 10-inch water filtration systems, including:
- American Plumber W-Series Systems
- Standard Undersink Filtration Units
- Reverse Osmosis Pre-Filters (check compatibility)
How the W5CIP Undersink Filter Cartridge Works
Filtration Process
Water passes through a carbon block that traps sediments and chemical impurities.
Absorption Method
Coconut carbon absorbs chlorine, chemicals, and odor-causing particles like a sponge, leaving water crisp and clean.
Installation Guide: How to Replace the W5CIP Cartridge
Tools You May Need
- Filter housing wrench
- Towel
- Bucket (optional)
Step-by-Step Instructions
- Turn off the water supply.
- Place a towel or bucket under the filter housing.
- Use the wrench to open the canister.
- Remove the old cartridge and rinse the housing.
- Insert the new W5CIP cartridge.
- Close the housing tightly and turn water back on.
- Run water for 3–5 minutes to flush before use.
How Often Should You Replace the W5CIP Filter?
Replace every 6 months or after 12,000 gallons — whichever comes first.
Signs That Your Filter Cartridge Needs Replacement
- Unpleasant water taste or odor
- Slower water flow
- Cloudy or discolored water
- Visible sediment
Maintenance Tips for Longer Filter Life
- Flush after installation
- Check housing monthly
- Maintain water pressure between 30–90 PSI
W5CIP vs Other American Plumber Models
| Feature | W5CIP | W5C | W5P |
|---|---|---|---|
| Carbon Block | ✅ | ❌ | ❌ |
| Sediment Removal | ✅ | ✅ | ✅ |
| Chlorine Removal | ✅ | ❌ | ❌ |
| Micron Rating | 5 | 5 | 30 |
Where to Buy the American Plumber W5CIP Undersink Filter Cartridge
You can purchase it at:
- Amazon
- Home Depot
- Lowe’s
- Plumbing Supply Stores
- Water Filtration Retailers
Pricing: Is the W5CIP Worth It?
With an average price of $15–$25, the W5CIP is affordable considering its strong performance. It’s a cost-efficient investment for better water quality.
Customer Reviews and Real User Experiences
Users praise:
- Better-tasting beverages
- Easy DIY installation
- Long-lasting performance
Most agree it provides great value for the price.
Pros and Cons of the W5CIP Filter Cartridge
✅ Pros:
- Improves taste and odor
- Affordable
- Easy to install
- Fits most 10” housings
❌ Cons:
- Not ideal for high-mineral well water
- Requires timely replacement
Conclusion
The American Plumber W5CIP undersink filter replacement cartridge is a reliable, efficient choice for anyone looking to enhance the quality of their drinking water. With effective carbon block filtration, easy installation, and a universal fit, it brings outstanding value and performance to any home. If you want cleaner, fresher water for your family, this filter is a smart pick.



