ProOne Big+ Gravity Water Filter System
- 3 gallon stainless steel gravity system
- 2 ProOne G2.0 filters, 7 inch
- Up to 9 months per filter with daily use
- NSF/ANSI-42 certified filters
- No power needed
- 10 x 10 x 15 inches with stand, spigot and mat
Updated 5 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A countertop gravity filter in stainless steel for home, RV or emergency use that runs without power. It does not plumb in, so filling the top chamber by hand is part of daily use.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B08L5KJH8MCategory: Undersink & Countertop Water Filters
Overview
ProOne builds the Big+ as a stainless steel gravity filter: you pour water into the top chamber and it drips through the filters into the lower one. It needs no electricity, works on a counter or in an RV, and dispenses from a stainless spigot.
Clean drinking water without plumbing or power suits homes, campers and emergency kits alike. Silver-infused filters last for months and leave minerals in. Filling by hand and waiting on gravity flow is the daily routine, which some households find slow.
Who it's for
Families who drink a lot of filtered water and want a backup during outages will use it daily. Renters with no counter space, or people expecting faucet-speed flow, should look at an under-sink or pitcher option.
Pros and cons
- Works without electricity
- Stainless steel body resists rust
- Long filter life
- Leaves calcium and minerals in
- Must be filled by hand
- Flow rate not listed
- Takes counter space
- Lead and PFAS claims not in bullets
Performance notes
Flow depends on water height in the top chamber and how clogged the filters are, so it slows as the upper tank empties. Silver infusion limits growth inside the filter between uses. Cleaning the chambers and priming new filters affect how quickly water passes.
Specifications
| Brand | ProOne |
|---|---|
| Dimensions & fit | |
| Item Dimensions D X W X H | 10 x 10 x 15 inches |
| Capacity & performance | |
| Capacity | 3 gallons |
| Filter Life Cycle | Up to 9 months with regular daily use |
| Power & efficiency | |
| Power Source | No power source |
| Construction & materials | |
| Material Type | Stainless steel |
| Color | Silver |
| Compatibility & installation | |
| Installation Type | Countertop |
| Included components | |
| Included Components | Gravity system, two 7 inch filters, stand, mat, gravity system kit, stainless steel spigot |
| Other details | |
| Purification Method | Gravity filtration, silver-infused filters |
| External Testing Certification | NSF/ANSI-42 |
| Item Type Name | Gravity Filter |
| Style Name | Two Filters |
Frequently asked questions
How do I clean the ProOne Big+ water filter?
The polished stainless steel is easy to clean and resists corrosion and rust. The listing does not give step-by-step cleaning directions.
How long do ProOne Big+ filters last?
Each filter lasts up to 9 months with regular daily use.
Does the ProOne Big+ need electricity?
No. It works by gravity and functions without electricity.
Does the ProOne Big+ remove minerals?
No. The listing says beneficial minerals like calcium are left in the water.