iSpring RCC7AK-BN Alkaline Reverse Osmosis System 75 GPD
- 75 GPD reverse osmosis output
- 6 stages, with alkaline mineral stage
- NSF/ANSI 58 certified as a full system
- 93 to 98% TDS reduction, PFAS 96 to 99%
- 750 ppm TDS max supported feed water
- No power needed, under sink install
- 6 month filter life cycle
- 1 year warranty, lifetime tech support
Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A certified under sink reverse osmosis system that adds minerals back after filtering and installs its faucet from above the counter. Plan on regular filter purchases, and the tank size is not stated.
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ASIN: B005LJ8EXUModel: RCC7AKCategory: Undersink & Countertop Water Filters
Overview
Not a pitcher or faucet attachment, the iSpring is a full reverse osmosis system that mounts under the sink and feeds its own brushed nickel faucet. Water moves through carbon stages, a membrane and an alkaline stage that adds minerals back.
Certification of the whole system, not just one filter, is the reason to buy, along with a faucet that tightens from above the counter. The mineral stage raises pH after the membrane strips the water. Owners take on a recurring filter schedule and need room under the sink for the tank and housings.
Who it's for
Kitchens where drinking and cooking water come from the tap gain a separate faucet for filtered water on demand. Homes with crowded sink cabinets, or source water carrying dissolved solids above the listed limit, should look elsewhere.
Pros and cons
- Whole system carries NSF certification
- Faucet installs entirely from above
- Clear first housing shows buildup
- Alkaline stage adds minerals back
- Storage tank size not listed
- Filters need regular replacement
- Takes up cabinet space under the sink
- Short limited warranty on hardware
Performance notes
Output depends on incoming water pressure and temperature, because the membrane relies on pressure to push water through and cold water slows production. Feed water with high dissolved solids shortens membrane life and lowers the reduction figures. Changing filters on schedule holds flow and taste steady.
Specifications
| Brand | iSpring |
|---|---|
| Model | RCC7AK |
| Dimensions & fit | |
| Item Weight | 27.56 pounds |
| Item Dimensions L X W X H | 15.5 × 16 × 18 inches |
| Capacity & performance | |
| Capacity | 75 gallons |
| Maximum Flow Rate | 284 liters per day |
| Filter Life Cycle | 6 months |
| Operating Pressure Range | 70 psi |
| Lowertemperature Range | 40 °F |
| Upper Temperature Rating | 100 °F |
| Power & efficiency | |
| Power Source | Manual |
| Construction & materials | |
| Material Type | Acrylonitrile Butadiene Styrene, Plastic, Polyethylene, Polypropylene, Polystyrene |
| Compatibility & installation | |
| Installation Type | Under-Sink |
| Included components | |
| Number Of Packs | 1 |
| Unit Count | 1 |
| Included Components | RO System, Brushed Nickel Faucet, Storage Tank, Extra Tool Set |
| Warranty & support | |
| Warranty Description | 1 year |
| Supported Water Tds Level Maximum Ppm | 750 |
| Other details | |
| Purification Method | Reverse Osmosis, Alkaline, Activated Carbon, Carbon Block |
| Container Type | Tube |
| Eu Spare Part Availability Duration | 3 years |
| Number Of Items | 1 |
| Other Special Features Of The Product | Multi Stage Filtrartion, NSF Certified |
| Part Number | RCC7AK-BN |
| Item Type Name | Reverse Osmosis System |
Frequently asked questions
Which replacement filters fit the iSpring RCC7AK-BN?
iSpring lists the F4AK set for 6 months, F9K for 1 year, F19K75 for 2 years and F28K75 for 3 years.
Does the iSpring RCC7AK-BN remove fluoride and lead?
The listing claims over 97.4% fluoride reduction and over 98.9% lead reduction, along with more than 1,000 other contaminants.
Can I install the iSpring RCC7AK-BN myself?
The listing describes a DIY friendly design with quick fitting connections, a manual and step by step videos. The faucet fastener tightens from above the counter, so there is no nut to reach under the sink.
Is the iSpring RCC7AK-BN a countertop filter?
No. The system installs under the sink, and only its faucet shows on the counter.