Countertop RO.
Just plug it in.
Fill the tank. Leave your plumbing alone.
Compare two RKIN systems and choose your everyday upgrade.
Clear Money Guide compares two RKIN models. We may earn a commission if you buy through our links, at no extra cost to you.
Great water.
Keep it simple.
Room-temperature RO water for your glass, bottle, or kettle.
$369.95 listed price
Choose color & filter edition on the product page.
- No plumbing connection or installation project
- Front-access tanks fit neatly under cabinets
- Mineral-added or zero-TDS filter editions
Is ZIP the right fit for me?
Start here if you want straightforward drinking water at the lower upfront price. Fill the reservoir with treated household tap water and run a batch; about half a gallon takes approximately 15 minutes, sometimes up to 20.
Size: 9.5″ wide × 14.5″ deep × 16.25″ high. Tanks pull out from the front. You’ll need a power outlet, refill the reservoir, empty reject water, and replace filters periodically.
ZIP does not heat or cool water. AlcaPure adds minerals back after RO; OnliPure targets zero TDS. A TDS reading alone does not establish water safety.
Your water.
Your temperature.
Hot, ambient, and cooled water with adjustable hot-water settings.
$875 listed new-unit price
Review the selected model and current delivery options.
- Hot-water convenience for everyday drinks
- Refillable design—no plumbing connection
- Wi-Fi/app-connected U1-W model
Is U1-W the right fit for me?
Compare U1-W if hot-water dispensing and more temperature choices will be useful every day. The higher price buys those features; ZIP remains the simpler room-temperature option.
Size: 9.5″ wide × 19″ deep × 17″ high. Allow access to refill the tank and check counter depth, overhead space, and electrical requirements before ordering.
Cool, not instant ice-cold: RKIN says approximately 15 ounces cool to 59°F in around 15 minutes. Allow time between cooling batches. Hot water requires care around children.
Prices checked September 5, 2026. Final price, stock, taxes, shipping and selected variants are set by RKIN. Manufacturer images; comparison based on published specifications, not hands-on testing.
Choose for the way
you’ll actually use it.
| Feature | ZIP | U1-W |
|---|---|---|
| Starting point | Simple drinking water | More temperature choices |
| Listed price | $369.95 | $875 new |
| Water temperature | Room temperature | Hot, ambient & cooled* |
| Batch production | ½ gal in ~15–20 min | ½ gal in under 7 min |
| W × D × H | 9.5 × 14.5 × 16.25 in | 9.5 × 19 × 17 in |
| Plumbing hookup | Not required | Not required |
| First filters | Preinstalled | Preinstalled |
| Manufacturer warranty | 1 year | 1 year |
*Cooling: approximately 15 oz to 59°F in 15 minutes. Not instant ice-cold water.
Pick it here. Make it yours at RKIN.
Each shopping button opens that exact product. Review colors or model options, delivery information, owner reviews, and your final total before checkout. There’s no CMG signup or contact form.
Before it reaches your counter.
What ongoing upkeep should I expect?
Both systems need electricity, manual tank refills, periodic cleaning, reject-water disposal, and replacement filters. Check RKIN’s filter prices and replacement schedule for your chosen model. Usage and source-water quality affect upkeep.
What about filtration and certification?
RKIN lists ZIP as certified by IAPMO R&T to NSF/ANSI 58 for reduction of total dissolved solids, fluoride, lead, hexavalent chromium, and trivalent chromium. This is not a claim that it removes every contaminant, and ZIP’s certification does not extend to U1-W.
RKIN provides separate third-party test documentation for U1-W. Review the exact model’s performance data for your needs. Start with treated household tap water and follow feed-water limits; untreated well water or a safety concern calls for appropriate testing and treatment first.
Where can I check shipping and delivery?
These comparisons are for US shoppers. RKIN’s product pages advertise free shipping in the contiguous US; confirm your address, stock and current terms on the merchant page. We don’t promise an arrival date.
How do returns and the warranty work?
RKIN lists a one-year manufacturer warranty for these new systems. Returns require authorization and customer-paid return shipping. After 30 days, its one-year return program involves a 25% restocking fee and store credit, not an unconditional cash refund. Read the current return policy before ordering.
How did you choose these two products?
This is a comparison of two models from our affiliate partner RKIN—not a ranking of every brand. We use published prices, features and specifications to show the practical choice between simpler room-temperature water and added temperature controls. We may earn a commission when you purchase through our links.