Culligan MaxClear Venture 3 Filters
The fully loaded Venture. It makes sense for a busy kitchen where a one-filter system would hold up the line.
Amazon $309$309
The Culligan MaxClear Venture 3 Filters is the better gravity water filter overall, rated 3.2 to 3.1. The ProOne Big+ 3 Gal wins on value. The ProOne Big+ 3 Gal costs $79.05 less ($229.95 vs $309).
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.
ProOne Big+ 3 Gal
A 3 gal stainless gravity filter that uses ProOne G2.0 filters. A mid-priced option, though the listing publishes little about flow, filter gallons or warranty.
Amazon $229.95$229.95
Which should you buy?
- Choose the ProOne Big+ 3 Gal for value ($76.65 per gallon of capacity ($229.95, 3 gal) vs $103 per gallon of capacity ($309, 3 gal)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 2.5 to 3.5 gal gravity water filter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Culligan MaxClear Venture 3 Filters | ProOne Big+ 3 Gal |
|---|---|---|
| Overall rating | 3.2/5 | 3.1/5 |
| Value 25% | 55 $103 per gallon of capacity ($309, 3 gal) | 73 $76.65 per gallon of capacity ($229.95, 3 gal) |
| Running cost 15% | 50 replacement cost or element life not published (neutral score used) | 50 replacement cost or element life not published (neutral score used) |
| Capacity 15% | 33 3 gal tank | 33 3 gal tank |
| Certification 20% | 30 states certification to NSF/ANSI 42 | 30 states certification to NSF/ANSI 42 |
| Element life 15% | 50 element life in gallons not published (neutral score used) | 50 element life in gallons not published (neutral score used) |
| Warranty 10% | 100 5-year warranty | 0 warranty not published, scored as none |
Specifications
| Culligan MaxClear Venture 3 Filters | ProOne Big+ 3 Gal | |
|---|---|---|
| Capacity and flow | ||
| Tank capacity | 3 gal | 3 gal |
| Price per gallon of capacity | $103 | $76.65 |
| Elements included | 3 | - |
| Maximum elements | 3 | - |
| Filtration | ||
| Element type | MaxClear ceramic shell with carbon media | ProOne G2.0 ceramic and carbon element, 7 in |
| Certified | NSF/ANSI 42 | NSF/ANSI 42 |
| 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: G2.0 filters carry NSF/ANSI 42 certification and were tested by an independent lab to other NSF standards. The title also says IAPMO certified to reduce lead, total PFAS and microplastics. |
| Running cost | ||
| Replacement element | 79 $ | - |
| Build | ||
| Material | brushed or polished stainless steel | stainless steel |
| Height | 27.6 in | - |
| Diameter | 9.4 in | - |
| Warranty | 5 years | - |