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Waterdrop King Tank vs Culligan Gravity with MaxClear

Buy the Culligan Gravity with MaxClear if you want a low-cost countertop gravity filter and can accept a 6-month filter swap. Buy the Waterdrop King Tank if you want long filter life and fluoride removal and will pay for it. As of November 6, 2026, the Culligan is $44.96 at eBay and the Waterdrop is $239.99 at Amazon, a gap of about $195.

Today the Culligan Gravity with MaxClear costs $195.03 less at its best price.

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Waterdrop
Waterdrop King Tank

Waterdrop King Tank

$239.99at AmazonObserved at 7:05 AM
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Choose the Waterdrop King Tank if you want fluoride reduction and up to 6,000 gallons per carbon filter pair, and the $239.99 Amazon price fits your budget.

Pros
  • Fluoride filter rated up to 1,000 gallons per pair
  • Carbon filter pair rated up to 6,000 gallons
  • Chlorine reduction up to 98.95%
  • 2.25-gallon capacity matches the Culligan
Cons
  • Costs about $195 more than the Culligan
  • Only one store prices it new
  • Fluoride filter needs replacing far sooner than the carbon filter
Culligan
Culligan Gravity with MaxClear

Culligan Gravity with MaxClear

$44.96at eBayObserved at 7:05 AM
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Choose the Culligan Gravity with MaxClear if you want a stainless steel gravity dispenser at $44.96 at eBay and are fine replacing the filter every 6 months.

Pros
  • Lowest price of the two at $44.96
  • Stainless steel body
  • Six stores price it new, so comparison shopping is easy
  • Handles source water up to 1000 TDS
Cons
  • Filter life is 6 months, not a gallon rating
  • No fluoride reduction listed
  • No chlorine reduction figure stated

What separates them

Waterdrop King TankCulligan Gravity with MaxClear
Price (as of November 6, 2026)$239.99 at Amazon$44.96 at eBay
Carbon filter lifeUp to 6,000 gallons per pair6 months per filter
Fluoride reductionDedicated fluoride filter, up to 1,000 gallons per pairNot listed; ceramic and granular carbon only
Purification methodCarbon block plus fluoride filterCeramic plus granular activated carbon
Chlorine reductionUp to 98.95%Not stated
Capacity2.25 gallons2.25 gallons
Power sourceGravityGravity
Footprint and weightNot listed8.6" x 8.6" x 26", 4.54 kg

Price history

  • Waterdrop King Tank: lowest $239.99 on Nov 6 at Amazon.
  • Culligan Gravity with MaxClear: lowest $44.96 on Nov 6 at eBay.

Prices at every store

Waterdrop King Tank

  • eBayPre-owned

    Availability unknown

    $179.99Free shippingObserved at 7:34 AM
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  • AmazonNew

    Availability unknown

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

    $239.99Free shippingObserved at 7:05 AM
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Also available at

  • eBayCheck price at eBay
All 2 stores and price history →

Culligan Gravity with MaxClear

  • eBayNew

    In stockSold by momto3blueeyedboys

    $44.96Free shippingObserved at 7:05 AM
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  • Home DepotNew

    In stock

    $78.98Free shippingObserved at 7:05 AM
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  • AmazonNew

    Availability unknown

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

    $155.00Free shippingObserved at 7:05 AM
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Also available at

  • eBayCheck price at eBay
All 3 stores and price history →

Specs compared

SpecWaterdrop King TankCulligan Gravity with MaxClear
Model NumberWD-Tank-King-F+SMCS701P
System Capacity2.25 gallons—
Carbon Filter CapacityUp to 6,000 gallons/pair—
Fluoride Filter CapacityUp to 1,000 gallons/pair—
Operating Temperature40-100°F (4-37°C)—
Chlorine Reductionup to 98.95%—
Capacity—2.25 gallons
Filter life—6 months
Installation type—Countertop
Material—Stainless Steel
Power source—Gravity
Purification method—Ceramic, Granular Activated Carbon
Show all 17 specsShow fewer specs
SpecWaterdrop King TankCulligan Gravity with MaxClear
Item dimensions—8.6"L x 8.6"W x 26"H
Item weight—4.54 kg
Max TDS level—1000
Container type—Dispenser
Included components—User Manual

What reviewers say

Culligan Gravity with MaxClear

Owners of gravity dispensers like this one generally value the no-power, no-plumbing setup and the taste of carbon-filtered water. Complaints center on slow flow and the lack of cold water.

What people mention
  • Flow rateCriticisedOwners say gravity dispensing is slow and filling a large container takes a while.
  • FiltrationPraisedUsers report cleaner-tasting water and less sediment with the ceramic and carbon filter.
  • Power-free setupPraisedBuyers like that it needs no outlet or plumbing and works anywhere.
  • Water temperatureCriticisedReviewers note the water is room temperature with no chilling.
Reviews
  • Best Water Filters and Dispensers, Lab-Tested by CNET

Questions and answers

Which removes fluoride?
Only the Waterdrop King Tank lists a fluoride filter, rated up to 1,000 gallons per pair. The Culligan lists ceramic and granular activated carbon, with no fluoride claim.
Which is cheaper to run?
The Waterdrop's carbon filter pair is rated up to 6,000 gallons, far longer than the Culligan's 6-month filter. The Culligan costs much less up front, so the winner depends on how much water you filter and local filter prices.
Do they hold the same amount?
Yes. Both are 2.25-gallon gravity dispensers, so capacity is not a reason to pick one.
Is the Waterdrop worth about $195 more?
Only if you need fluoride reduction or want to change filters rarely. If you just want basic gravity filtration, the Culligan does the job for far less.
Which has more buying options?
The Culligan. Six stores price it new as of November 6, 2026, against one store for the Waterdrop.
Which is easier to place on a counter?
The Culligan's dimensions are listed at 8.6" wide and 26" tall and 4.54 kg. The Waterdrop's footprint and weight are not listed, so measure your space before ordering it.

More comparisons

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  • Berkey Big Berkey Gravity-Fed Water Filter System vs Waterdrop King Tank
  • ProPur ProOne Big+ Gravity Water Filter System vs Waterdrop King Tank
  • GlacierFresh 2.25 Gallon Gravity Water Filter System vs Culligan Gravity with MaxClear

Buying guides that pick them

  • Best countertop gravity-fed water filtration systems