iSpring RCC7AKF3 Alkaline Reverse Osmosis System
- Capacity: 75 gallons
- Purification: Reverse Osmosis
- Install Type: Under-Sink
- Material: Plastic
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A standard under-sink RO system with a stated 75-gallon capacity, suited to buyers ready for a permanent under-sink install rather than a plug-and-pour filter.
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ASIN: B0FZM654GGModel: RCC7AKF3Category: Water Filtration Systems
Overview
An under-sink reverse osmosis filtration system from iSpring rated for 75 gallons of output, built with a plastic housing sized at roughly 15.5 by 5 by 18.5 inches and weighing about 27 pounds. It is meant to mount below a kitchen sink and feed a dedicated faucet.
Reverse osmosis systems like this one push tap water through a semi-permeable membrane to remove a wide range of dissolved contaminants, a different mechanism than a simple carbon pitcher filter. The 75-gallon rating describes the system's output capacity, not a single filter cartridge's life.
- Reverse osmosis purification
- 75-gallon rated capacity
- Under-sink install, plastic housing
- About 27 lb unit weight
Who it's for
Homeowners who want under-sink RO filtration and are comfortable with a below-sink installation and periodic cartridge changes. Not for renters who cannot modify plumbing or anyone wanting a countertop, no-install option.
Pros and cons
- Reverse osmosis removes more than carbon alone
- Compact footprint at about 15.5 x 5 x 18.5 in
- Defined 75-gallon output rating
- Requires permanent under-sink installation
- Plastic housing rather than metal
Performance notes
Reverse osmosis forces water through a membrane under pressure, which is what separates it from carbon-only filters and lets it target a broader range of dissolved solids. The listed 75-gallon capacity and 27-pound unit weight point to a compact multi-stage cartridge setup rather than a large storage tank system.
Specifications
| Brand | iSpring |
|---|---|
| Model | RCC7AKF3 |
| Dimensions & fit | |
| Weight | 27 poundshigher than 88% of 41 water filtration systems |
| Dimensions | 15.5 × 5 × 18.5 inches |
| Dimensions | 15.5 x 5 x 18.5 in |
| Capacity & performance | |
| Capacity | 75 gallons |
| Construction & materials | |
| Material | Plastic |
| Compatibility & installation | |
| Install Type | Under-Sink |
| Other details | |
| Purification | Reverse Osmosis |
Closest rivals on specs
Apec Water ROES-100 Water Filtration System- Capacity 75 vs 100 gallons (-25%)
Bluevua RO100ROPOT Countertop Reverse Osmosis System- Capacity 75 vs 0.4 gallons (+18650%)
- Weight 27 vs 23.2 pounds (+16%)
Waterdrop WD-A2G Water Filtration System- Capacity 75 vs 1.2 gallons (+6150%)
- Weight 27 vs 22 pounds (+23%)
Frequently asked questions
Is the iSpring RCC7AKF3 a reverse osmosis system?
Yes, it uses reverse osmosis purification and is rated for 75 gallons of output.
Does the RCC7AKF3 install under the sink?
Yes, it is built for under-sink installation rather than countertop use.
How much does the iSpring RCC7AKF3 weigh?
The unit weighs about 27 pounds and measures roughly 15.5 x 5 x 18.5 inches.