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Culligan FM-25 Faucet vs DuPont Faucet Mount (WFFM100XCH) Side-by-Side Comparison

Can’t decide between the Culligan FM-25 and the DuPont Faucet Mount (WFF100XCH) filter? This short comparison guide can help you pick!

By , , and ·Updated
Two faucet-mount water faucets, the Culligan FM-25 Faucet and DuPont Faucet Mount (WFFM100XCH), held side-by-side by a reviewer for comparison purposes.

Overall Verdict

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Both water filters did well in our hands-on performance tests. The Culligan FM-25 and the DuPont WFFM100XCH have perfect chlorine filtration performance. 

However, the DuPont has a lower filtering flow rate than the Culligan at 0.44 GPM. It’s one of the very few models in our database that failed the flow rate test.

On the other hand, the Culligan FM-25 managed to pass the test, but only barely, with a recorded flow rate of 0.5 GPM.

Both models aren’t ideal if you have a high-pressure faucet at home and are looking for a faucet-mount filter to maintain the flow speed. But if you have to choose between either, then the Culligan FM-25 will be the better option in this case.

Design-wise, both models are great. They’re made from sturdy materials, and we didn’t find any serious issues with their design.

Pros & Cons

  • Excellent chlorine filtering ability with a near-100% filtration rate.
  • Good build quality, premium materials.
  • The locking collar fixes the filter solidly to the tap, preventing it from wiggling around.
  • The push/pull routing valve is easy to use. Automatically reset after the tap is shut off.
  • Replacement filters are cheap, easy to find.
  • Chrome-plated design gives it a sharp appearance
  • Excellent chlorine filtering capability
  • Decent flow rate
  • Easy to install and use
  • Very low flow rate in filtration mode (0.5 GPM).
  • The filter of our unit leaked during testing.
  • The filter has a very low maximum filtering capacity (100 gallons)
  • Only has one nozzle, so it’s hard to know what mode the filter has been switched into until you look at the routing valve’s handle

Key Specs

Dimensions
L3 x W4.5 x H3.5 inches
0.46 GPM
Weight
1.1 lbs (0.5 kg)
100 gallons
Capacity
200 gals
ANSI Standard 42 and 53
Qualifications
NSF/ANSI Standard 42 and 53
L5.5 x W2 x H5.25 inches
Filtering flow rate
0.5 GPM
0.9 pounds
Warranty
2 years
2 years

Where to Buy

Price at publication
$40.27
$22.30

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Analysis and Test Results

Performance

Overall Performance Scoring
7.0
6.8

Chlorine Test

10
10
The Culligan FM-25 filter mounted on a tap. To its left is the testing result pad with two activated test strips.
Two testing kits overlaid on the color pad showing the test results. One from the control sample (left) and one from the filtered water sample (right).
The Culligan FM-25 filter mounted on a tap. To its left is the testing result pad with two activated test strips.
Culligan FM-25 Faucet Mount Filter Chlorine Test 3
The color chart with two used test strips stuck to it is held to the right of the DuPont WFFM100XCH.
Activated testing strips can be seen on the color chart. The one to the left is the strip for the control sample, the one to the right is the strip for the DuPont WFFM100XCH’s filtered water.
The color chart with two used test strips stuck to it is held to the right of the DuPont WFFM100XCH.
DuPont Faucet Mount Water Filter Chlorine Test
Before
10+ mg/l
10+ mg/l
After
~0 mg/l
~0 mg/l

Flow Rate Test

5.0
4.7
Duration
20 secs
20 secs
Amount
0.172 gallons
0.155 gallons
Flow Rate
0.5 GPM
0.46 GPM

Design

Overall Design Scoring
8.3
8.4

In the Box

The glossy housing of the Culligan FM-25 faucet-mount water filter next to its shipping box, adapters, and paperwork.
The glossy housing of the Culligan FM-25 faucet-mount water filter next to its shipping box, adapters, and paperwork.
Two faucet adapters made from white plastic with black rubber seals at the top
The silver, metallic DuPont WFFM100XCH filter is in the center, surrounded by the shipping box, manuals, and accessories.

Dimensions

Culligan FM-25 Faucet Mount Filter Dimensions
The dimensions of the DuPont WFFM100XCH. Length is 5.5 inches, width is 2 inches, and height is 5.25 inches.
Length
3.0" (7.6 cm)
5.5" (14.0 cm)
Width
4.5" (11.4 cm)
2.0" (5.1 cm)
Height
3.5" (8.9 cm)
5.3" (13.3 cm)
Weight
1.1 lbs (0.5 kg)
0.9 lbs (0.4 kg)

Build Quality

8.3
8.5
The Culligan FM-25 filter’s side profile, showing its large filter compartment, slip-on collar, and routing valve’s knob.
The Culligan FM-25 filter’s side profile, showing its large filter compartment, slip-on collar, and routing valve’s knob.
The main filter nozzle of the Culligan FM-25, with the “Remove Before Installing” sticker removed.
The side profile of the silvery and glossy DuPont WFFM100XCH faucet-mount water filter on a grey table.
The side profile of the silvery and glossy DuPont WFFM100XCH faucet-mount water filter on a grey table.
A close-up of the DuPont WFFM100XCH filter’s mounting port, with black plastic rotating ring and golden metallic threading.

Filter Piece

8.0
8.0
The filter piece of the Culligan FM-25 faucet-mount water filter, with white plastic casing and chrome-plated end piece.
The filter piece that comes with the Culligan FM-25.
The white plastic filter cartridge that comes with the filter. Printed on it are the DuPont logo and the number 100.
The white plastic filter cartridge that comes with the filter. Printed on it are the DuPont logo and the number 100.
The interior of the DuPont WFFM100XCH’s filter compartment, revealing the insertion ports for the filter cartridge.
Filter Model
Culligan FM-25R and FM-25RA
DuPont WFFMC300X replacement filter
Filtration Process
Activated Carbon and Ionization Filtration
Granulated Activated Carbon (GAC)
Certifications
ANSI Standard 42 and 53
ANSI Standard 42 and 53
Filter Capacity
200 gallons
100 gallons

Routing Valve

10
10
A close-up view of the push-pull routing valve on the side of the Culligan FM-25 faucet-mount water filter.
A close-up view of the push-pull routing valve on the side of the Culligan FM-25 faucet-mount water filter.
A top-down view of the mounting collar of the Culligan FM-25 along with the push-pull routing valve.
Type of Valve
Push/pull
Rotating

Usability

Overall Usability Scoring
9.8
9.7

Installation

10
10
The Culligan FM-25 faucet-mount water faucet with a faucet adapter attached to the filter’s mounting port.
The filter with a faucet adapter attached to the mounting port.
A close-up of the DuPont WFFM100XCH’s mounting port with a metal adapter in place.
The DuPont WFFM100XCH equipped with a metal adapter, which allows it to connect to a faucet with internal threading.

Ease of Use

10
9.0
A close-up of the only nozzle, equipped with a grey plastic aerator, on the DuPont WFFM100XCH filter.
The sole nozzle at the bottom of the DuPont WFFM100XCH filter.

Leak

10
10

Maintenance

8.0
10
The Culligan FM-25 faucet-mount water filter next to the Culligan FM-25R filter piece.
The Culligan FM-25 faucet-mount water filter next to the Culligan FM-25R filter piece.
An upside down FM-25R filter piece, with chrome-plated end piece and housing made from white plastic.
The 100-gallon filter cartridge of the DuPont WFFM100XCH alongside the pieces of the filter.
Filter Indicator
N/A
No
Replacement
2 months
1-2 months