Kelmora
Rill C4 Countertop RO System
$429.00
Rill C4 is a countertop reverse osmosis system for renters and households of one or two that want filtered tap water without a plumbing connection. Its 0.0001 micron membrane produces up to 7.5 L per hour. A 5 L feed tank and 1.2 L glass carafe support daily drinking and cooking.
Made for kitchens without a filter tap
Use Rill C4 in an apartment, office kitchen, or small home where drilling the counter is not an option. Fill the rear tank from the tap, select a volume, and place the carafe under the outlet. No faucet adapter is needed.
Four filtration stages
A sediment and carbon prefilter handles particles and chlorine. The reverse osmosis membrane reduces dissolved solids and lead. Water then passes through a carbon postfilter and a calcium mineral cartridge.
Less concentrate to empty
The system produces 4 L of purified water for each 1 L of concentrate under standard test conditions. Concentrate remains in the removable feed tank for disposal. Rated daily production is 22 L.
Materials and care
The water path uses food-contact polypropylene and silicone. The carafe is borosilicate glass with a stainless steel lid. Wash both removable tanks weekly, replace the composite prefilter every 6 months, and replace the RO membrane every 24 months.
Key attributes
- Filtration
- 4-stage reverse osmosis
- RO membrane
- 0.0001 micron nominal pore size
- Certification
- NSF/ANSI 58 certified
- TDS reduction
- 94.2% average under standard test conditions
- Lead reduction
- 98.7% average under standard test conditions
- Feed tank capacity
- 5.0 L
- Carafe capacity
- 1.2 L
- Dispensing rate
- Up to 7.5 L per hour at 25 degrees Celsius and 60 psi equivalent feed pressure processing conditions. Rated daily output is 22 L, with automatic pauses between cycles.
Fit and sizing
The unit measures 38.4 cm wide by 21.6 cm deep by 39.8 cm high and weighs 8.6 kg empty. Allow 8 cm behind it for airflow and 15 cm above it to lift out the feed tank. The carafe bay fits vessels from 8 to 22 cm tall. A 1.5 m power cord reaches a standard 120 V outlet.
Questions and answers
Does the Rill C4 need a plumbing connection?
How much filtered water does it make?
Does it reduce fluoride and lead?
What happens to the concentrated water?
Can it filter well water?
Does the system add minerals after reverse osmosis?
How often do the filters need replacement?
Is the glass carafe dishwasher safe?
Reviews
★ 4.8 · 37 ratingsRatings and reviews on this page are simulated. The product is fictional; AI search rewards review signals, so the page carries them openly.
I rent, so I needed something that did not touch the faucet. It fits beside my coffee maker and fills the carafe in about 10 minutes.
The feed tank is easy to carry from the sink. I empty the concentrate after each full cycle, which is simpler than I expected.
The water tastes neutral and the controls are clear. I needed the full 15 cm of space above it to remove the rear tank.
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