The Scout with its full set of two filters. Buy this one if you will fill the tank daily.
Amazon $199
For people who want faster flow than a two-filter 2.25 gal system and can do without a certification claim.
- 2.2 galCapacity
- None statedCertification
- 3,000 gal eachElement life
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
- Three filters out of the box for faster flow
- 9,000 gallons of rated filter life across the set
- No certification claimed in the listing
- Only a one-year warranty
The Waterdrop King Tank family
Every Waterdrop King Tank model we rank, smallest first. Ratings compare each against its own capacity.
| Model | Capacity | Rating | Price |
|---|---|---|---|
| Waterdrop TK15-A | 1.5 gal | 3.4/5 | $119.99 |
| Waterdrop TK-A | 2.2 gal | 3.5/5 | $159.99 |
| Waterdrop TK-AE (this one) | 2.2 gal | 3.0/5 | $189.99 |
| Waterdrop TK-AB-FS | 2.2 gal | 3.3/5 | $199.99 |
| Waterdrop TK-FS | 2.2 gal | 3.3/5 | $239.99 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its capacity. How we rank explains each one.
Specifications
| Model number | WD-TK-AE |
|---|---|
| Capacity and flow | |
| Tank capacity | 2.2 gal |
| Price per gallon of capacity | $84.44 |
| Elements included | 3 |
| Maximum elements | 3 |
| Filtration | |
| Element type | Coconut shell carbon filter (black) |
| Certified | None stated |
| Certification detail | Listing makes no certification claim for this three-filter model. |
| Running cost | |
| Rated life per element | 3,000 gal each |
| Build | |
| Material | 304 stainless steel |
| Warranty | 1 year |
Alternatives in this capacity
The 3-stage Purewell with a water-level window. It costs a little more than the certified PW-OB.
Amazon $158.99For homes with fluoridated water they would rather not drink. Plan on replacing the fluoride filters much sooner than the carbon ones.
Amazon $229Compare
Compare the Waterdrop TK-AE with any other gravity water filter →
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