iSpring RCC1UP Filtration System Review
Our verdict
The iSpring RCC1UP is a high-flow under-sink reverse osmosis system rated at 100 gallons per day, built around brass fittings for durability at $419.99. Its small review count of 106 means you are relying on limited buyer data, but the 4.6-star rating is encouraging.
Check price on AmazonBest for
Households that want a high daily output RO system and prefer brass construction over plastic fittings for long-term durability.
Skip if
You want a well-reviewed system with thousands of buyer opinions behind it, or if cabinet weight is a concern since the unit weighs 35 pounds.
- Purification Reverse Osmosis
- Capacity / life 100 Gallons
- Install Under-Sink
- Material Brass
- Dimensions 14.5 X 5.25 X 19 In
- Weight 35.0 lb
- Priced 36% above the category median ($307.99 across 65 tracked models)
- Weight of 35.0 lb - heavier than 100% of the 65 models we track
Our scorecard
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Owner rating4.6/5
4.6 average across 106 owner ratings
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Popularity1.8/5
106 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other water filtration: replacement filters, under-sink and reverse osmosis systems, filter pitchers, water dispensers, coolers, faucet filters and softeners we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The iSpring RCC1UP is an under-sink reverse osmosis system with a rated output of 100 gallons per day, sitting in a brass-constructed housing. At 14.5 x 5.25 x 19 inches and 35 pounds, it is a substantial unit that needs a reasonably sized cabinet and proper mounting. The brass material is a distinction from many systems in this category that use plastic or polypropylene housings.
Reverse osmosis uses a semi-permeable membrane to reduce dissolved solids, and is designed to address a broad range of contaminants. No third-party certification data is confirmed in the product facts, so buyers should consult iSpring directly or check current product listings for NSF or WQA testing details before making a purchase decision.
At $419.99 it sits at the higher end of mid-range RO pricing. The 106-review base gives it a 4.6-star average, which is solid but represents a narrower sample than many competing models. For buyers who value brass construction and a 100-GPD capacity, the RCC1UP is worth a closer look.
Pros
- 100 gallons per day output is higher than many standard 75-GPD systems
- Brass construction for durability compared to plastic alternatives
- Under-sink install keeps the countertop clear
- 4.6-star average from available reviewers
Cons
- Only 106 reviews, giving limited buyer data to draw on
- 35 pounds is heavy, requiring solid cabinet support and careful installation
- No confirmed certification data in product facts
- Dimensions of 14.5 x 5.25 x 19 inches need a spacious cabinet
Specifications
| Purification | Reverse Osmosis |
|---|---|
| Capacity / life | 100 Gallons |
| Install | Under-Sink |
| Material | Brass |
| Dimensions | 14.5 X 5.25 X 19 In |
| Weight | 35.0 lb |
Performance notes
Reverse osmosis membranes are designed to reduce dissolved solids including certain heavy metals, fluoride, nitrates, and chlorine taste and odor compounds. The 100-gallon-per-day rating indicates daily production capacity under optimal inlet conditions, not an instantaneous flow rate. A storage tank (common with traditional RO systems) would be needed for on-demand delivery. The brass fittings are more resistant to corrosion and chemical leaching than plastic in long-term water contact applications. No NSF or other third-party certification was listed in the available product data.
What buyers say
The 4.6-star rating across 106 reviews points to a mostly satisfied buyer pool, but the review count is modest. Buyers comfortable with iSpring's product line and looking for a heavier-duty, higher-output system appear to be the primary audience. Wider adoption data is limited compared to iSpring's more popular models.
More from iSpring
Similar water filtration: replacement filters, under-sink and reverse osmosis systems, filter pitchers, water dispensers, coolers, faucet filters and softeners to consider
Frequently asked questions
What makes the RCC1UP different from standard 75-GPD iSpring RO systems?
The RCC1UP is rated at 100 gallons per day versus the 75-GPD output on many iSpring standard models. It also uses brass construction for its fittings, which some buyers prefer over plastic for durability. The trade-off is greater weight at 35 pounds and a higher price.
Is the iSpring RCC1UP certified by NSF or a similar body?
No third-party certification was confirmed in the product data available to us. iSpring markets several systems with NSF-certified components, but we cannot confirm the certification status of this specific model. Check the current Amazon listing and iSpring's website for up-to-date testing documentation.
Does this system come with a storage tank?
The product data does not confirm tank inclusion. Traditional RO systems typically pair with a pressurized storage tank to provide on-demand water flow. Verify what is included in the current kit before purchase, and factor in tank dimensions when assessing cabinet space requirements.