The entry Culligan MaxClear with a certified filter for people who want a name-brand 2.25 gal system at a low price.
Amazon $155The Culligan MaxClear Scout 1 Filter is the better gravity water filter overall, rated 3.4 to 3.3. The Culligan MaxClear Scout 1 Filter leads on warranty and value. The Waterdrop TK-FS wins on certification. The Culligan MaxClear Scout 1 Filter costs $84.99 less ($155 vs $239.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
The Waterdrop with fluoride filters in the box. Costs $80 more than the TK-A, which can take fluoride filters as an add-on.
Amazon $239.99Which should you buy?
- Choose the Culligan MaxClear Scout 1 Filter for warranty (5-year warranty vs 1-year warranty) and value ($68.89 per gallon of capacity ($155, 2.2 gal) vs $106.66 per gallon of capacity ($239.99, 2.2 gal)).
- Choose the Waterdrop TK-FS for certification (states certification to NSF/ANSI 42, NSF/ANSI 372 vs states certification to NSF/ANSI 42).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 2.25 gal gravity water filter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Culligan MaxClear Scout 1 Filter | Waterdrop TK-FS |
|---|---|---|
| Overall rating | 3.4/5 | 3.3/5 |
| Value 25% | 80 $68.89 per gallon of capacity ($155, 2.2 gal) | 53 $106.66 per gallon of capacity ($239.99, 2.2 gal) |
| Running cost 15% | 50 replacement cost or element life not published (neutral score used) | 75 $0.012 per gallon filtered ($34.99 per element, 3,000 gal each) |
| Capacity 15% | 17 2.2 gal tank | 17 2.2 gal tank |
| Certification 20% | 30 states certification to NSF/ANSI 42 | 40 states certification to NSF/ANSI 42, NSF/ANSI 372 |
| Element life 15% | 50 element life in gallons not published (neutral score used) | 100 3,000 gal rated per element |
| Warranty 10% | 100 5-year warranty | 11 1-year warranty |
Specifications
| Culligan MaxClear Scout 1 Filter | Waterdrop TK-FS | |
|---|---|---|
| Capacity and flow | ||
| Tank capacity | 2.2 gal | 2.2 gal |
| Price per gallon of capacity | $68.89 | $106.66 |
| Elements included | 1 | 4 |
| Maximum elements | 2 | 4 |
| Filtration | ||
| Element type | MaxClear ceramic shell with carbon media | Coconut shell carbon filter (black) |
| Certified | NSF/ANSI 42 | NSF/ANSI 42, NSF/ANSI 372 |
| Certification detail | Listing: IAPMO certified to NSF/ANSI 42 to reduce microplastics, lead and Total PFAS. The listing does not name the standards behind the lead and PFAS claims. | Listing: system certified to NSF/ANSI 372 and the black carbon filter to NSF/ANSI 42. The listing does not say the fluoride filters are certified. |
| Fluoride | - | Included |
| Fluoride element life | - | 1,000 gal |
| Running cost | ||
| Rated life per element | - | 3,000 gal each |
| Replacement element | 79 $ | 35 $ |
| Cost per gallon filtered | - | $0.012 |
| Build | ||
| Material | brushed or polished stainless steel | 304 stainless steel |
| Height | 26 in | - |
| Diameter | 8.6 in | - |
| Warranty | 5 years | 1 year |
