96.6
Best for long distance thru-hikers and weight-conscious backpackers
- Removes 99.999999% of bacteria
- Filters up to 100,000 gallons
- Fits standard soda and water bottles
$46
Head to head · Water Filtration
Big Berkey 2.25 Gal Gravity Water Filter System vs RCC7AK-BN NSF Certified, 75 GPD
Ravvy scores Big Berkey 2.25 Gal Gravity Water Filter System at 89.51 and RCC7AK-BN NSF Certified, 75 GPD at 93.61. RCC7AK-BN NSF Certified, 75 GPD takes the overall pick, best for health-conscious families and diy homeowners who dislike the taste of flat ro water.
$367
The Big Berkey is the gold standard for independent water filtration, provided you are willing to manage the manual priming process and occasional maintenance of the filter elements.
Ravvy pick
93.6
$235
The iSpring RCC7AK-BN is the ideal choice for those seeking bottled-quality alkaline water at home, provided you have the under-sink clearance for its multi-stage footprint.
How they score
| Factor | Big Berkey 2.25 Gal Gravity Water Filter System | RCC7AK-BN NSF Certified, 75 GPD |
|---|---|---|
| Portability | 85 | – |
| Build Quality | 93.5 | – |
| Long Term Value | 98 | – |
| Filtration Power | 95 | – |
| Setup Difficulty | 70 | – |
| Flow Rate | – | 85.5 |
| Maintenance Cost | – | 92 |
| Water Efficiency | – | 78 |
| Filtration Quality | – | 96.5 |
| Ease of Installation | – | 89 |
Big Berkey 2.25 Gal Gravity Water Filter System
What owners praise
- Extremely long filter life up to 6000 gallons
- No electricity or plumbing required for operation
- High quality 304 stainless steel construction
- Effective for both tap and raw untreated water
- Significant cost savings over time per gallon
What to know first
- High upfront investment cost
- Filter priming can be tedious for new users
- Slow filtration speed compared to tap systems
- Limited shipping availability in certain US states
Skip it if renters with very limited counter space or residents of california and iowa
RCC7AK-BN NSF Certified, 75 GPD
What owners praise
- Remineralization stage improves water taste and pH balance
- Top-mount faucet simplifies the most difficult part of installation
- Transparent first-stage housing for easy visual maintenance
- NSF/ANSI 58 certified for the entire system, not just components
- High daily output capacity suitable for large families
What to know first
- Six stages and a storage tank require significant under-sink space
- Requires a dedicated hole in the countertop for the faucet
- Higher wastewater ratio compared to expensive motorized systems
Skip it if apartment renters with zero space under the sink or those wanting instant-hot features
Specs side by side
| Spec | Big Berkey 2.25 Gal Gravity Water Filter System | RCC7AK-BN NSF Certified, 75 GPD |
|---|---|---|
| UPC | 197644669424 | 662425038015 |
| ASIN | B00CYW3EVO | B005LJ8EXU |
| GTIN | 197644669424 | 662425038015 |
| Brand | Berkey | iSpring |
| Capacity | 8.5 liters | 75 gallons |
| Material | Stainless Steel | Acrylonitrile Butadiene Styrene, Plastic, Polyethylene, Polypropylene, Polystyrene |
| Brand Name | Berkey | iSpring |
| Model Name | BER-BU2 | RCC7AK-BN |
| Unit Count | 1 Count | 1 Count |
| Item Weight | 0.27 g | 12.5 kg |
| Part Number | BER-BU2 | RCC7AK-BN |
| Manufacturer | Berkey | iSpring |
Other options in this category
93.7
Membrane Solutions
Personal Water Filter Straw S1 4 Pack Blue
Best for backcountry hikers, international travelers, and disaster preparedness kits
- 0.1 Micron Ultrafiltration
- 5,000 Liter Capacity
- NSF 42, 372, and 401 Certified
$30
93.5
Best for group campers, rv owners, and emergency preppers
- 400 Gallon Total Capacity
- NSF 60 Certified Formula
- 30-Minute Rapid Action
$33