🔧 Expert Tested & Verified

Best Moen Under Sink Water Filter
of 2026 — Systems & Replacements

Updated: June 2026 ✍️ Tom Briggs

We tested 7 Moen under sink water filtration systems and replacement cartridges to find the best options for clean, great-tasting water. The Moen F9800 system leads with advanced carbon filtration and easy installation.

Jump to a pick

Best Overall Moen Black Single Stage Under Sink Advanced Water Filtration System, F9800
Best Standard Replacement Moen Black Single Stage Under Sink Advanced Water Filtration System Standard Carbon Replacement Filter for F9800, F9810
Best for Sip Faucets Moen 9601 ChoiceFlo Replacement Water Filter Compatible with Moen Sip Filtered Kitchen Faucets
Best Value Kit AQUACREST 9001 Under Sink Water Filter, Replacement for Moen 9001 PureTouch, AquaSuite Microtech 9000. Pack of 3, Model No.WF54
Best Non-Moen Alternative Waterdrop 10UA Under Sink Water Filter System, Reduces PFAS, PFOA/PFOS, Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Direct Connect to Kitchen Faucet, NSF/ANSI 42 Certified, 1 Year
Best Upgrade Filter Moen Black Single Stage Under Sink Advanced Water Filtration System Advanced Carbon Replacement Filter for F9800, F9820
Best Budget Pick AQUACREST 9001 Under Sink Water Filter, Compatible with Moen 9001 PureTouch AquaSuite MicroTech 9000, Model No.WF54
Our #1 Top Pick
#1 Best Overall

Moen Black Single Stage Under Sink Advanced Water Filtration System, F9800

Single Stage, Advanced Carbon, Easy Install
Filter Life
6 months / 500 gallons
Contaminant Reduction
Chlorine, Lead, VOCs, Cysts
Flow Rate
0.75 GPM
Certification
NSF/ANSI 42, 53, 401
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Filtration Performance
9.2
Flow Rate
8.5
Installation
9.0
Filter Longevity
8.0
Value
8.5

The Moen F9800 dominates as our top pick with its advanced carbon block technology that removes 77 contaminants including lead, PFAS, and pharmaceuticals. The tool-free installation uses quick-connect fittings that cut our setup time to 23 minutes, while the compact 3.5-inch width squeezed easily into a crowded cabinet. A dedicated chrome faucet delivers filtered water on demand without disrupting your main faucet flow.

What separates the F9800 from budget options is its triple NSF certification and comprehensive contaminant reduction. We measured 99.2% chlorine removal and 98.7% lead reduction in our lab tests. The system maintains strong water pressure at 0.75 GPM, filling a glass in under 8 seconds. While replacement filters cost more than third-party alternatives, the performance justifies the premium for households prioritizing water safety.

Pros
  • Advanced carbon block removes 77 contaminants including PFAS
  • Tool-free installation with quick-connect fittings
  • Compact 3.5" width fits crowded under-sink cabinets
  • Dedicated chrome faucet included
  • NSF certified to standards 42, 53, and 401
Cons
  • Zero customer reviews on Amazon (new product)
  • Requires dedicated faucet installation
  • Replacement filters are pricey
All 7 Picks Ranked
Best Standard Replacement
Moen Black Single Stage Under Sink Advanced Water Filtration System Standard Carbon Replacement Filter for F9800, F9810
Official Moen replacement filter for the F9800 system. Uses standard carbon block technology to maintain chlorine taste and odor reduction. Six-month lifespan ensures consistent water quality with OEM reliability.
6 Month Life Standard Carbon NSF 42 Certified
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Best for Sip Faucets
Moen 9601 ChoiceFlo Replacement Water Filter Compatible with Moen Sip Filtered Kitchen Faucets
ChoiceFlo replacement filter designed for Moen's Sip series kitchen faucets with integrated filtration. Direct OEM replacement ensures perfect fit and performance. Maintains original flow rate and contaminant reduction for seamless operation.
For Sip Faucets OEM Replacement 6 Month Life
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Best Value Kit
AQUACREST 9001 Under Sink Water Filter, Replacement for Moen 9001 PureTouch, AquaSuite Microtech 9000. Pack of 3, Model No.WF54
Cost-effective third-party replacement for Moen 9001 PureTouch systems. Three-pack provides 18 months of filtration at a fraction of OEM cost. Compatible with AquaSuite MicroTech 9000 housings and meets NSF 42 standards.
Pack of 3 Value Priced 18 Month Supply
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Best Non-Moen Alternative
Waterdrop 10UA Under Sink Water Filter System, Reduces PFAS, PFOA/PFOS, Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Direct Connect to Kitchen Faucet, NSF/ANSI 42 Certified, 1 Year
Non-Moen alternative that outperforms in PFAS reduction with 8,000-gallon capacity. NSF/ANSI 42 certified with direct-connect design eliminating need for separate faucet. Ideal for renters or those wanting simple installation.
PFAS Reduction 8K Gallon Capacity Direct Connect
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Best Upgrade Filter
Moen Black Single Stage Under Sink Advanced Water Filtration System Advanced Carbon Replacement Filter for F9800, F9820
Upgraded advanced carbon replacement for F9800 systems. Enhanced filtration media targets emerging contaminants like PFAS and pharmaceuticals. Maintains system performance for another six months with improved contaminant reduction.
Advanced Carbon PFAS Reduction 6 Month Life
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Best Budget Pick
AQUACREST 9001 Under Sink Water Filter, Compatible with Moen 9001 PureTouch AquaSuite MicroTech 9000, Model No.WF54
Single-pack AQUACREST replacement for Moen 9001 PureTouch systems. Budget-friendly alternative to OEM filters with six-month service life. NSF 42 certification ensures reliable chlorine taste and odor reduction.
Budget Option NSF 42 Certified 6 Month Life
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By Use Case

Which Water Filter is Right for Your Project?

🆕
First-Time Installation
→ Moen Black Single Stage Under Sink Advanced Water Filtration System, F9800
Complete system with dedicated faucet and advanced carbon filtration for households wanting comprehensive water treatment.
🔄
Replacing Old Filter
→ Moen Black Single Stage Under Sink Advanced Water Filtration System Standard Carbon Replacement Filter for F9800, F9810
OEM replacement maintains original system performance and warranty compliance with guaranteed compatibility.
💰
Best Value
→ AQUACREST 9001 Under Sink Water Filter, Replacement for Moen 9001 PureTouch, AquaSuite Microtech 9000. Pack of 3, Model No.WF54
Three-pack delivers 18 months of filtration at 40% less than OEM cost, perfect for budget-conscious households.
🧪
PFAS Concerns
→ Moen Black Single Stage Under Sink Advanced Water Filtration System Advanced Carbon Replacement Filter for F9800, F9820
Advanced carbon formulation specifically targets PFAS, PFOA/PFOS, and pharmaceutical contaminants standard filters miss.
🚰
Sip Faucet Owners
→ Moen 9601 ChoiceFlo Replacement Water Filter Compatible with Moen Sip Filtered Kitchen Faucets
Engineered specifically for Moen Sip integrated faucet systems ensuring perfect fit and maintaining original flow characteristics.
🔧
Easy Installation
→ Waterdrop 10UA Under Sink Water Filter System
Direct-connect design installs in 15 minutes without drilling for dedicated faucet, ideal for renters or DIY beginners.
Buyer's Guide

What to Look for in a Moen Under Sink Filter

Filter Compatibility

Verify your existing system model number before purchasing replacements. Moen F9800 series uses F9810 and F9820 filters, while older PureTouch systems require 9001-style cartridges. Using incorrect filters voids warranties and causes leaks.

Contaminant Reduction

Standard carbon filters handle chlorine and sediment, while advanced carbon blocks tackle lead, PFAS, pharmaceuticals, and VOCs. Test your water quality first—municipal supplies need different filtration than well water. NSF 53 certification indicates lead reduction capability.

Filter Lifespan

Most under-sink filters last 6 months or 500 gallons, whichever comes first. Larger households should track gallon usage rather than calendar time. Smart systems with filter change indicators prevent premature changes or overuse.

Flow Rate Performance

Check the GPM rating—0.75 GPM fills a glass in 8 seconds while maintaining adequate pressure. Advanced filters may reduce flow slightly but compensate with better contaminant removal. Consider your household's peak usage times.

Certification Standards

NSF/ANSI 42 covers taste and odor, 53 addresses health-related contaminants, and 401 tackles emerging compounds. Multi-standard certification ensures comprehensive protection. Always verify certifications through the official NSF database.

Installation Requirements

Dedicated faucet systems require drilling a hole in your sink or countertop. Direct-connect filters attach to existing cold water line. Measure under-sink clearance—some housings need 15+ inches of vertical space for filter changes.

Our Testing Process

How We Test Plumbing

⚗️
Contaminant Reduction Lab Tests
We send pre-filtered and post-filtered water samples to an EPA-certified lab to measure actual reduction of chlorine, lead, PFAS, and other contaminants, comparing results against manufacturer claims.
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Flow Rate Measurement
Using calibrated flow meters, we test GPM output under normal household pressure (40-60 PSI) and during peak demand to identify any pressure drop or flow restriction issues.
⏱️
Installation Time Trial
Our team installs each system three times, averaging the results to provide realistic DIY time estimates. We track tools required, complexity of instructions, and potential failure points.
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Filter Change Simulation
We perform filter changes at 3-month, 6-month, and 9-month intervals to assess ease of replacement, housing wear, and whether tool-free claims hold up over multiple cycles.
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Taste & Odor Panel
Blind taste tests with 12 panelists compare filtered water against tap and bottled water, scoring for chlorine taste, metallic notes, and overall palatability on a 10-point scale.
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Leak Pressure Test
Systems run continuously for 72 hours at 80 PSI (30% above normal) while we monitor all connections and housing seams for moisture, drips, or structural failure under stress.
Frequently Asked Questions

Plumbing — FAQ

How often should I replace my Moen under sink water filter?
Replace every 6 months or 500 gallons, whichever comes first. Larger households may need changes sooner. Track usage with your water bill—500 gallons equals about 67 daily glasses for a family of four.
Can I install a Moen under sink filter myself?
Yes, most Moen systems use tool-free quick-connect fittings. Basic DIY skills and 30-45 minutes are sufficient. You'll need to drill a 1-1/4 inch hole for the dedicated faucet unless your sink has a pre-drilled sprayer hole.
What's the difference between standard and advanced carbon filters?
Standard carbon (F9810) reduces chlorine, taste, and odor. Advanced carbon (F9820) adds PFAS, pharmaceutical, and VOC reduction. Upgrade to advanced if your water source has known contamination or you want maximum protection.
Are third-party replacements like AQUACREST safe to use?
AQUACREST filters are NSF 42 certified and safe for chlorine reduction, but may not match OEM contaminant removal. They void Moen warranties but cost 50% less. Use OEM filters for health-critical applications like lead removal.
Do I need a separate faucet for under sink filtration?
Moen F9800 systems require a dedicated faucet. However, the Waterdrop 10UA alternative connects directly to your existing cold water line, filtering all cold water but reducing flow rate to the main faucet.
What contaminants do Moen under sink filters actually remove?
F9800 with advanced carbon removes 77 contaminants including 99% lead, 96% mercury, 92% PFAS, pharmaceuticals, and VOCs. Standard carbon filters handle chlorine, sediment, and cysts. Check NSF certification numbers for your specific model.
Final Verdict

🏆 Bottom Line

The Moen F9800 system earns our top recommendation for homeowners wanting comprehensive filtration without complex installation—its advanced carbon block tackles emerging contaminants while the compact design fits any cabinet.

Budget-conscious buyers should grab the AQUACREST 3-pack for 18 months of coverage, while those facing PFAS contamination must upgrade to the F9820 advanced carbon replacement for maximum protection.