Culligan has been a trusted name in water treatment since 1936, and their lineup of filtration products covers virtually every need in a modern household. Whether you need whole house protection, under-sink drinking water filtration, or a portable pitcher, Culligan has a solution.
We reviewed and tested 10 of their most popular water filters to help you find the right one for your home, budget, and water quality concerns.
This heavy-duty whole house filtration system removes dirt, sand, silt, and sediment from your entire home's water supply. It features a bypass shutoff valve for easy filter changes and reduces chlorine odor and taste by over 90%.
Quick Comparison Chart
| # | Culligan Filter | Our Rating | ||
|---|---|---|---|---|
| 1 |  |
WH-HD200-C Whole House | ★★★★★ | Check Price |
| 2 |  |
Whole-House Heavy Duty | ★★★★★ | Check Price |
| 3 |  |
US-4 EZ Under Sink | ★★★★☆ | Check Price |
| 4 |  |
WSH-C125 Showerhead | ★★★★☆ | Check Price |
| 5 |  |
FM-15A Faucet-Mount | ★★★★☆ | Check Price |
| 6 |  |
RVF-10 RV Filter | ★★★★☆ | Check Price |
| 7 |  |
IC-4 EZ Refrigerator | ★★★★☆ | Check Price |
| 8 |  |
WH-S200-C Sediment | ★★★★ | Check Price |
| 9 |  |
US-600A Under Sink | ★★★★ | Check Price |
| 10 |  |
PIT-1 Pitcher | ★★★★ | Check Price |
1. WH-HD200-C — Best Overall
Culligan WH-HD200-C Whole House Filtration System
Heavy-duty whole house system with 1-inch ports, bypass shutoff valve, and 90%+ chlorine reduction for city and well water.
Pros
- Bypass shutoff valve for filter changes without turning off water
- Larger 1-inch ports for faster water flow
- Reduces chlorine odor and taste by over 90%
Cons
- Requires basic plumbing knowledge for installation
- Only a 2-year limited warranty
The Culligan WH-HD200-C is the upgraded version of the WH-S200-C, designed as a whole house heavy-duty water filtration system. It filters water from every outlet in your home, removing dirt, sand, silt, and sediment from your plumbing pipes.
With larger 1-inch inlet and outlet valves, it handles a pressure range of 30 to 100 psi without restricting water flow. The bypass shutoff valve lets you swap filter cartridges without shutting off your home’s water supply.
Different cartridge options not only remove sediments but also reduce chlorine odor and taste by over 90%, delivering cleaner water to every faucet, shower, and appliance in your home.
2. Whole-House Heavy Duty — Best Heavy Duty
Culligan Whole-House Heavy Duty Water Filter
4x capacity heavy-duty system ideal for large homes, private wells, farms, pools, and spas with a 5-year warranty.
Pros
- 4 times the capacity of a standard filter system
- Ideal for large homes, private wells, and pools
- Includes housing wrench and pressure relief valve
- 5-year limited warranty
Cons
- Larger footprint requires more installation space
- May be overkill for small apartments
The Culligan Whole-House Heavy Duty filter delivers 4 times the capacity of a standard filtration system, making it the go-to choice for large homes, private wells, farms, swimming pools, and spas. It provides thorough filtration by removing dirt, sand, silt, and other sediments from your entire plumbing system.
This system protects water-using appliances like washing machines, water heaters, and dishwashers, extending their lifespan. It comes with a housing wrench and pressure relief valve, and replacement filters are affordable and widely available.
Culligan backs it with a 5-year limited warranty.
3. US-4 EZ — Best Under Sink
Culligan US-4 EZ Under Sink Filter
Premium under-sink filter reducing chlorine up to 97% and particulates up to 99% with LED filter life indicator.
Pros
- Reduces chlorine up to 97% and particulates up to 99%
- Dedicated LED light indicates filter life
- Tool-free filter cartridge changes
Cons
- Lower flow rate at 0.5 GPM
- Only filters one tap
The US-4 EZ is the premium model in Culligan’s under-sink filter series. It reduces chlorine up to 97% and particulates up to 99%, making it highly effective against contaminated water and harmful sediments at a single tap.
A dedicated LED light tells you exactly when the filter needs replacing, and cartridge changes are completely tool-free. With a 0.5 GPM flow rate, it delivers clean drinking and cooking water instantly.
Tubing and all installation hardware are included.
4. WSH-C125 — Best Shower Filter
Culligan WSH-C125 Filtered Showerhead
Bacteriostatic shower filter with 5 spray settings, EPA WaterSense certification, and 6-month/10,000-gallon filter life.
Pros
- IAPMO certified to ANSI Standard 177
- EPA WaterSense certified at 1.8 GPM
- Removes sulfur smell and chlorine
- 5-year limited warranty
Cons
- Only fits standard 1/2-inch threaded shower arms
- Doesn't filter drinking water
The WSH-C125 protects your skin and hair from chlorine-treated municipal water during every shower. Its bacteriostatic design limits the passage and growth of bacteria, and 5 different spray settings let you customize your shower experience.
Certified by IAPMO to ANSI Standard 177, this showerhead also carries EPA WaterSense certification at a maximum 1.8 GPM flow rate. It removes sulfur smell and chlorine while providing a filter life of up to 6 months or 10,000 gallons.
Culligan includes a 5-year limited warranty.
5. FM-15A — Best Faucet Filter
Culligan FM-15A Faucet-Mount Filter
Carbon block faucet filter that reduces lead, chlorine, and atrazine with tool-free installation and a diverter valve.
Pros
- Installs in under a minute with no tools
- Diverter valve switches between filtered and unfiltered water
- Effectively reduces lead and chlorine
Cons
- Filter only lasts 2 months or 200 gallons
- May not fit non-standard faucets
The FM-15A is one of the simplest water filters on the market, installing in under a minute with no tools required. Its carbon block filtration method reduces turbidity by removing atrazine, lead, chlorine, lindane, and Class I particulates.
A built-in diverter valve lets you switch instantly between filtered and unfiltered water. The filter provides a 0.5 GPM flow rate at 60 psi in a pressure range of 30 to 100 psi, with a filter life of 2 months or approximately 200 gallons.
6. RVF-10 — Best for RVs
Culligan RVF-10 RV External Water Filter
Slim, travel-friendly RV water filter using the D-15 cartridge with a 3-month/250-gallon filter life and 5-year warranty.
Pros
- Slim and sturdy for travel
- Inexpensive replacement cartridges
- 5-year limited warranty
Cons
- Shorter filter life at 3 months
- Designed only for RV water systems
The RVF-10 is built especially for recreational vehicles, providing filtered and pure water for drinking and cooking while on the road. It delivers chlorine-free and sediment-free water with great taste and minimal odor using the widely available Culligan D-15 cartridge.
The slim and sturdy design is perfect for travel, and replacement cartridges are inexpensive. The filter lasts up to 3 months or approximately 250 gallons, and Culligan backs it with a 5-year limited warranty.
7. IC-4 EZ — Best for Refrigerators
Culligan IC-4 EZ Inline Refrigerator Filter
Inline refrigerator and ice maker filter reducing chlorine 97% and particulates 99% with a 6-month/500-gallon filter life.
Pros
- 97% chlorine and 99% particulate reduction
- Filter lasts up to 6 months or 500 gallons
- Easy-change RC-EZ series cartridges
Cons
- Lower flow rate at 0.5 GPM
- Designed for cold water lines only
The IC-4 EZ is designed for refrigerator and ice maker filtration. It uses the same high-quality cartridges as Culligan’s under-sink series, reducing chlorine up to 97% and particulates up to 99% for great-tasting water and ice.
The filter provides a 0.5 GPM flow rate at 60 psi and lasts up to 6 months or 500 gallons. Easy-change RC-EZ series cartridges (RC-EZ-1, RC-EZ-3, and RC-EZ-4) make maintenance simple.
The package includes the RC-EZ-4 cartridge, mounting screws, and a cartridge change reminder sticker.
8. WH-S200-C — Best for Small Homes
Culligan WH-S200-C Sediment Filter System
NSF certified whole house filter for small to medium homes with 3/4-inch ports and bypass shutoff valve.
Pros
- NSF Standard 372 and Standard 61 certified
- Bypass shutoff for easy filter replacement
- Affordable replacement cartridges
Cons
- Smaller 3/4-inch ports may limit flow
- Not for heavy-duty filtration needs
The WH-S200-C is the smaller sibling of the WH-HD200-C, designed for small to medium-sized homes. It provides a pressure range of 30 to 120 psi with 3/4-inch inlet and outlet valves and is compatible with P5, CW-F, CW-MF, and S1A-D filter cartridges.
It holds NSF Standard 372 (lead compliance) and Standard 61 (material safety) certifications. The bypass shutoff valve allows filter replacement without turning off the water supply, and replacement cartridges are affordable and widely available.
This is one of Culligan’s most popular units for budget-friendly whole house filtration.
9. US-600A — Best Long-Lasting
Culligan US-600A Under Sink Filter
Under-sink filter with an impressive 12-month/1,000-gallon filter life, 1 GPM flow rate, and 5-year warranty.
Pros
- Filter lasts up to 12 months or 1,000 gallons
- Higher 1 GPM flow rate
- 5-year warranty
Cons
- Only filters one tap
- Requires under-sink space
The US-600A is a top pick with its impressive 12-month or 1,000-gallon filter life, making it one of the longest-lasting under-sink options from Culligan. The D-20 filter cartridge removes turbidity and chlorides from municipal water while improving taste and eliminating odor.
With a 1 GPM flow rate at 60 psi, it delivers faster water than many competing under-sink filters. All setup tools are included: mounting bracket, 3/8-inch tubing, 2 quick-connect elbows, SW-5A housing wrench, and D-20A filter cartridge.
Culligan provides a 5-year warranty.
10. PIT-1 Pitcher — Best Budget
Culligan PIT-1 Water Filter Pitcher
Affordable NSF 42/53 certified pitcher with built-in filter indicator, ergonomic handles, and fridge-door-friendly design.
Pros
- Most affordable Culligan filter option
- NSF Standard 42 and 53 certified
- Built-in filter replacement indicator
- Fits inside most refrigerator doors
Cons
- Small capacity of about 50 gallons
- Requires frequent filter changes
The PIT-1 pitcher takes water filtration to its most accessible level. Just fill it with tap water and let the PR-1 replacement cartridge gradually purify it by removing chlorine and other contaminants.
A built-in indicator tells you when the filter needs changing.
It’s NSF Standard 42 and Standard 53 certified, with ergonomically designed handles and a shape that fits inside most refrigerator doors. The filter cartridge handles about 50 gallons before replacement, and replacement cartridges are among the cheapest in the water filtration market.
Finding the Right Culligan Filter for You
Choosing the right Culligan filter depends on what you need to protect. Here are the main categories to consider:
Whole House vs. Point-of-Use
A whole house filter like the WH-HD200-C or WH-S200-C connects to your main water line and filters every outlet in your home. Learn how to install a whole house water filter for step-by-step guidance. This protects your appliances, plumbing, and every faucet at once.
A point-of-use filter like the US-4 EZ or FM-15A targets a single tap, providing more focused filtration for drinking and cooking water.
Filter Life and Replacement Cost
Filter life ranges dramatically across the Culligan lineup. The FM-15A faucet filter lasts just 2 months, while the US-600A under-sink filter goes 12 months between replacements.
Consider the long-term cost of replacement cartridges alongside the upfront price. Our guide to water filter cartridge types can help you compare options.
Certifications Matter
Look for NSF certifications when comparing models. The WH-S200-C holds NSF Standard 372 and Standard 61 certifications, while the PIT-1 pitcher carries NSF Standard 42 and 53.
These certifications verify that the filter performs as claimed.
Special Use Cases
For RV travelers, the RVF-10 was purpose-built for recreational vehicle water systems. For refrigerator and ice maker filtration, the IC-4 EZ connects inline to your cold water supply. See our best inline water filter for ice maker guide for more options.
The WSH-C125 is the only option for shower filtration, protecting your skin and hair from chlorine.
How We Evaluated
We assessed each Culligan water filter based on the following criteria:
- Filtration Effectiveness - How well the filter removes sediment, chlorine, and other contaminants from your water supply
- NSF Certifications - Whether the filter holds NSF/ANSI, IAPMO, EPA WaterSense, or other third-party certifications
- Filter Lifespan - How many gallons or months each filter lasts before requiring replacement
- Ease of Installation - Whether the system requires professional plumbing or supports DIY setup
- Flow Rate - How well the filter maintains water pressure and gallons per minute
- Overall Value - Upfront cost, replacement cartridge pricing, warranty coverage, and long-term maintenance
Frequently Asked Questions
It varies a lot by model. The FM-15A faucet filter needs a swap every 2 months or 200 gallons. Under-sink models like the US-600A stretch to 12 months. The WSH-C125 shower filter lasts about 6 months or 10,000 gallons. Check your specific model's timeline.
They are. Many Culligan filters carry NSF certifications — the WH-S200-C, for example, has both Standard 372 and Standard 61 certs. Culligan's been doing this since 1936, so quality control is baked into their DNA.
Most of them, yes. Faucet-mount filters snap on in under a minute with no tools. Under-sink systems come with tubing and hardware. Whole house models might need some basic plumbing know-how, but all the installation hardware is included.
Whole house connects to your main water line, so every faucet, shower, and toilet gets filtered water. Under-sink only covers one tap. Go whole house if you want protection everywhere, or under-sink if you just want clean drinking water at one specific spot.
Final Thoughts
There's a reason Culligan has lasted nearly 90 years in the water business — their products just work. And they've got something for pretty much everyone.
The WH-HD200-C is our overall pick for whole-home protection. It's heavy-duty with oversized ports and cuts chlorine by over 90%. If you only need filtered water at one tap, the US-4 EZ is excellent — 97% chlorine and 99% particulate reduction. On a budget? The PIT-1 pitcher gives you NSF-certified filtration without breaking the bank.
You really can't go wrong with any Culligan filter. Pick the one that fits your situation and enjoy the upgrade.
Culligan offers a water filter for every need and budget, from whole house systems to portable pitchers. The WH-HD200-C is the best overall choice for complete home filtration, while the PIT-1 pitcher is the most affordable entry point. Match the filter type to your specific water concerns and always check for NSF certifications to provide proven performance.
