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Culligan FM-25 Faucet Water Filter vs Waterdrop CTF-01 Countertop Water Filter

The Waterdrop CTF-01 is the better long-term pick: a 12-month, 8,000-gallon cartridge and a 5-stage filter mean far fewer changes and broader contaminant coverage than the Culligan FM-25. The Culligan is smaller, lighter and simpler to swap, and its scores (7.75 overall, 8.1 professional) show solid, if unremarkable, performance. Buy the Culligan for a small sink and low upfront commitment; buy the Waterdrop if you want to set it and forget it.

  • Choose the Culligan FM-25 if you have a compact faucet, want a light unit that swaps in seconds, and prefer a low-commitment first filter.
  • Choose the Waterdrop CTF-01 if you want a year between cartridge changes, a faster 1.6 gpm flow and 5-stage filtration.

Prices

  • Culligan FM-25 Faucet Water Filter: $22.28 at eBay (checked today)
  • Waterdrop CTF-01 Countertop Water Filter: $59.99 at Home Depot (checked today)
  • Difference: the Culligan FM-25 Faucet Water Filter is $37.71 cheaper than the Waterdrop CTF-01 Countertop Water Filter today
Culligan
Culligan FM-25 Faucet-Mount Advanced Water Filtration System

Culligan FM-25 Faucet Water Filter

Culligan FM-25 Faucet-Mount Advanced Water Filtration System

$22.28at eBayObserved at 4:13 AM
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Pros
  • Small and light on the faucet
  • Simple tool-free install and cartridge swap
  • Respected water-treatment brand
  • Solid professional review score
Cons
  • Cartridge lasts only about 2 months
  • Two-stage carbon filtration only
  • Lower consumer score than professional score
Waterdrop
Waterdrop CTF-01

Waterdrop CTF-01 Countertop Water Filter

Waterdrop CTF-01

$59.99at Home DepotObserved at 4:16 AM
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Pros
  • 12-month, 8,000-gallon cartridge
  • 5-stage filtration
  • 1.6 gpm flow rate
  • Fewer changes and less waste
Cons
  • Tall 12.5 in body can crowd the sink
  • Bulkier and heavier than the Culligan
  • No widely published review scores

What separates them

Culligan FM-25 Faucet Water FilterWaterdrop CTF-01 Countertop Water Filter
Cartridge life200 gallons or about 2 months12 months, rated 8,000 gallons
Filtration stagesActivated carbon and carbon block5 stages
Flow rateNot published; standard faucet-mount flow1.6 gpm
Size and weightCompact plastic and stainless body, about 6.5 cm tall12.5 in tall, bulkier on the faucet
InstallationCountertop faucet mount, tool-freeCountertop faucet mount
Maintenance frequencyCartridge every 2 monthsCartridge once a year
Reviewer scores7.75 overall, 8.1 professional, 7.4 consumerNo comparable published scores

Price history

  • Culligan FM-25 Faucet Water Filter: lowest $16.17 on Oct 29.
  • Waterdrop CTF-01 Countertop Water Filter: lowest $59.99 on Nov 9 at Home Depot.

Prices at every store

Culligan FM-25 Faucet Water Filter

  • eBayOpen box

    Availability unknownSold by drews_spot (99.6% positive, 260 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $20.96Free shippingObserved at 4:13 AM
    Visit eBay
  • eBayNew

    Availability unknownSold by inhomeoutlet (99.7% positive, 64,000 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $22.28Free shippingObserved at 4:13 AM
    Visit eBay

Also available at

  • eBayCheck price at eBay

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Prices and history →

Waterdrop CTF-01 Countertop Water Filter

  • Home DepotNew

    In stock

    $59.99Free shippingObserved at 4:16 AM
    Visit Home Depot
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $59.99Free shippingObserved at 4:14 AM
    Visit Amazon
  • eBayNew

    Availability unknown

    $69.99Observed at 4:16 AM
    Visit eBay
  • eBayNew

    Availability unknownShips from Canada · duties may apply

    $69.99Observed at 4:16 AM
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Store links may earn us a commission.

All 6 stores and price history →

Specs compared

SpecCulligan FM-25 Faucet Water FilterWaterdrop CTF-01 Countertop Water Filter
Filter life200 gallons or 2 months12 months filter life
Capacity200 Gallons8000 gal
Installation typeCountertopCountertop
Temperature range40 –100°F—
Operating pressure range30–100 psi—
Product dimensions5.5L x 3.5W x 6.5H centimetres—
MaterialPlastic Stainless Steel—
Purification methodActivated Carbon, Carbon Block—
Power sourceAdapter—
Included componentsFilter, Instruction Manual—
Filter Life Cycle—12 months
Maximum Flow Rate—1.6 gpm
Show all 16 specsShow fewer specs
SpecCulligan FM-25 Faucet Water FilterWaterdrop CTF-01 Countertop Water Filter
Dimensions—4.92 x 3.51 x 12.51 in
Number Of Stages—5 stages
Height—12.5 in high
Flow Rate—1.6 gpm

What reviewers say

Culligan FM-25 Faucet Water Filter

Owners generally see the FM-25 as an inexpensive fix for chlorine taste and smell in tap water. Many like the simple screw-on install. Complaints center on short filter life and slower flow.

What people mention
  • Taste and odorPraisedOwners say chlorine taste and smell drop noticeably after installing it.
  • InstallationPraisedReviewers find it screws onto standard faucets quickly without tools.
  • Filter lifeCriticisedMany say the cartridge needs changing before the rated two months.
  • Water flowCriticisedUsers report the filtered stream is slower than unfiltered tap water.

Questions and answers

Which is better for a family that uses a lot of filtered water?
The Waterdrop CTF-01. Its 8,000-gallon, 12-month cartridge and 1.6 gpm flow handle heavy daily use without constant changes. The Culligan needs a new cartridge roughly every 2 months.
Which lasts longer between cartridge changes?
The Waterdrop by a wide margin: 12 months versus about 2 months for the Culligan. Over a year that is one cartridge versus about six.
Is the Waterdrop worth stepping up to?
Yes if you want broader 5-stage filtration and far fewer cartridge swaps. The Culligan makes more sense for a small sink or a short-term rental.
Will the Waterdrop fit a small kitchen faucet?
It is 12.5 in tall, so check clearance above the faucet and under cabinets. The Culligan is much smaller and fits tight spaces more easily.
Does the Culligan filter as much as the Waterdrop?
No. The Culligan uses activated carbon and a carbon block; the Waterdrop runs 5 stages. The Culligan covers taste and chlorine-type concerns, the Waterdrop goes further.
Which is easier to install?
Both mount on the faucet without tools. The Culligan is lighter and quicker to fit; the Waterdrop is heavier and taller but still a countertop screw-on.

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