A Black Friday "deal" is often a normal price next to an inflated list price. Here a gravity water filter only counts as on sale when its checked price is at least 15% below its own typical price over the last 90 days, from our price history. The best-rated models are listed too, since many are good value without a sale. See deals in every category.
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.
On sale now
No gravity water filter rated 3.8 or higher is 15% or more below its typical price at the last price check (November 9, 2026). Prices are rechecked through the sales; this list updates when one drops. See the recent price changes.
Best buys at their normal price
The top-rated models in each capacity. A sale on one of these is worth more than a big discount on a weaker model.
Best Gravity Water Filters Up to 2.25 Gallons
- Purewell 3-Stage PW-OB#1 of 17Full review
A low-priced, certified-filter 2.25 gal system for chlorine, taste and sediment. Fluoride needs a different model.
Amazon $145.99$145.992.2 galNSF/ANSI 42, NSF/ANSI 3723,000 gal each - Waterdrop TK-A#2 of 17Full review
A well-priced 2.25 gal system with certified carbon filters. The easy pick if you want Berkey-size capacity for less.
Amazon $159.99$159.992.2 galNSF/ANSI 42, NSF/ANSI 3723,000 gal each - Culligan MaxClear Scout 1 Filter#3 of 17Full review
The entry Culligan MaxClear with a certified filter for people who want a name-brand 2.25 gal system at a low price.
Amazon $155$1552.2 galNSF/ANSI 42-
Best Gravity Water Filters of 2.5 to 3.5 Gallons
- Culligan MaxClear Venture 1 Filter#1 of 6Full review
A 3 gal MaxClear that can grow into three filters. A good base if you plan to add filters later.
Amazon $199$1993 galNSF/ANSI 42- - Culligan MaxClear Venture 3 Filters#2 of 6Full review
The fully loaded Venture. It makes sense for a busy kitchen where a one-filter system would hold up the line.
Amazon $309$3093 galNSF/ANSI 42- - ProOne Big+ 3 Gal#3 of 6Full review
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$229.953 galNSF/ANSI 42-
Best Large Gravity Water Filters (4.5 Gallons and Up)
- Crown Berkey#1 of 2Full review
The largest Berkey, for a large family, a church kitchen or a workplace. Cheapest per gallon of capacity among the Berkeys.
Amazon $478$4786 galTested only3,000 gal each - Imperial Berkey#2 of 2Full review
For a big household or a shared office. It costs about $100 per gallon of capacity, a better rate than the smaller Berkeys.
Amazon $451$4514.5 galTested only3,000 gal each
