Tankless RO System Manufacturer
1000 GPD Direct Flow — OEM From $45
The best tankless RO system for homes, offices & commercial use. Fills a glass in 6 seconds, 3:1 pure-to-drain ratio, fits under any sink. OEM & private label ready.
What Is a Tankless Reverse Osmosis System?
A tankless reverse osmosis system (also called a direct-flow RO or tankless RO water filter) purifies water on demand without storing it in a pressurized tank. Traditional RO systems use a small membrane (50–100 GPD) and a 3.2-gallon storage tank that takes 1–2 hours to refill. Tankless RO systems use high-output membranes (400–1000 GPD) to deliver purified water directly to the faucet — fast enough that no tank is needed.
The result: 70% less space under the sink, no risk of tank-borne bacteria, fresh water on every pour (no TDS creep from stagnant water), and a 3:1 pure-to-drain ratio that wastes far less water than older tank systems. Our 1000 GPD model fills a standard glass in approximately 6 seconds.
Tankless RO is now the dominant format in the under-sink water purifier market. Brands like Waterdrop, Frizzlife, and iSpring have proven the category — and we manufacture equivalent systems at OEM cost, enabling brands to retail at $199–$299 vs. $399–$539 for branded alternatives. Read our detailed tankless vs. tank RO comparison →
The market pain points we solve
“Consumers complain about slow flow”
1000 GPD direct flow — fills a glass in 6 seconds. 25% faster than 800 GPD competitors.
“RO tanks breed bacteria & take up space”
Tankless design eliminates the storage tank entirely. Fresh water on demand, 70% less cabinet space.
“Installation is too complex (60-90 min)”
Quick-connect fittings throughout. Color-coded tubing. Average DIY install under 30 minutes.
“TDS creep after idle periods”
Auto-flush function clears stagnant water from the membrane. Consistent TDS from the first pour.
“Competitors charge $400-$500+ retail”
Our 1000 GPD OEM cost enables retail pricing at $199-$299 — significantly undercutting Waterdrop and Frizzlife.
“Filter replacement costs are too high”
Standard composite filters with 12-24 month life. Your brand controls the replacement cartridge revenue stream.
Technical Specifications
Base specifications for our 1000 GPD tankless RO platform. All parameters are customizable for OEM projects.
| Parameter | Specification |
|---|---|
| Flow Rate | 1000 GPD (2.6 L/min) |
| Type | Direct flow, tankless |
| Booster Pump | Not required (works at 14.5–87 psi) |
| Pure-to-Drain Ratio | 3:1 (75% recovery) |
| TDS Rejection | ≥ 95% |
| Filtration Stages | 5-stage (PP + Carbon + RO + Carbon + Post) |
| RO Membrane | Composite, 1000 GPD rated |
| Filter Life | 12–24 months (usage dependent) |
| Dimensions | 550 × 330 × 300 mm |
| Weight | ~10 kg |
| Installation | Under-sink, quick-connect fittings |
| Auto-Flush | Yes (membrane protection) |
OEM Customization Options
- Custom GPD rating (400 / 600 / 800 / 1000)
- Smart faucet with TDS display (optional add-on)
- UV sterilization stage (optional add-on)
- Remineralization / alkaline post-filter
- Housing color: white / black / custom RAL
- Private label: your logo, packaging, manual, barcode
- Certification support: NSF/ANSI 42, 53, 58, 372
Pricing & MOQ
FOB Ningbo pricing. Volume discounts at 200+ / 500+ / 1000+ units. Custom OEM tooling (new molds) takes 30-45 days on first order.
How XZH compares to market leaders
Our OEM platform matches or exceeds the specs of the best-selling tankless RO brands — at a fraction of the cost.
| Spec | XZH OEM | Waterdrop G3P800 | Frizzlife PD600 | iSpring Tankless |
|---|---|---|---|---|
| GPD | 1000 | 800 | 600 | 800 |
| Pure:Drain | 3:1 | 3:1 | 1.5:1 | 2:1 |
| Pump Required | No | Yes (internal) | Yes (internal) | Yes (internal) |
| Retail Price | $199-$299* | $399-$539 | $299-$376 | $250-$350 |
| Smart Faucet | Optional | Included | No | No |
| UV Stage | Optional | Included | No | No |
| Private Label | Yes | No | No | No |
* Suggested retail price based on OEM cost + typical distributor margin. Actual retail pricing is set by the brand owner. All competitor trademarks are property of their respective owners.
Who sources tankless RO systems from XZH?
Amazon Private Label Brands
Launch your own tankless RO brand on Amazon with our white-label system. We handle production, you handle marketing.
Water Filter Distributors
Add a high-margin tankless RO line to your existing filtration catalog. Replacement filters lock in recurring revenue.
Plumbing & Home Improvement
Offer under-sink RO installation services with your own branded system. Higher margins than reselling big brands.
Existing RO Brands
Expand your product line to 1000 GPD without building production in-house. We manufacture, you brand and sell.
Request a Quick Quote
Learn More About RO Systems
Tankless vs. Tank RO: Which Should You Stock?
Flow rate, footprint, secondary contamination, and which format wins for offices, cafes, and import catalogs.
RO vs UF vs NF Membrane Comparison
Rejection rates, flow, cost, and which membrane technology fits each water condition.
RO Membrane Cartridge Sourcing Guide
How to evaluate membrane quality, GPD ratings, and OEM sourcing from China.
Ready to launch your tankless RO brand?
Send us your requirements — GPD, features, target retail price. We'll reply with a detailed OEM proposal within 24 hours.
Tankless RO OEM — Frequently Asked Questions
Q1. What is the minimum order quantity for tankless RO systems?
Trial orders start at MOQ 50 units. For custom branding (your logo, packaging, manual), MOQ is 200 units. Volume pricing is available at 500+ and 1000+ units.
Q2. Can I customize the GPD rating?
Yes. We offer 400, 600, 800, and 1000 GPD configurations on the same platform. The membrane and housing size are adjusted accordingly. Most OEM customers choose 600 or 800 GPD for price-sensitive markets, and 1000 GPD for premium positioning.
Q3. Does the system really work without a pump?
Yes. Our direct-flow design uses high-rejection composite membranes optimized for residential water pressure (14.5-87 psi / 1-6 bar). No booster pump means lower noise, lower power consumption, and fewer failure points.
Q4. What certifications can you provide?
We use NSF-certified raw materials and can support your NSF/ANSI 42, 53, 58, and 372 certification applications. We also assist with CE, RoHS, and other regional certifications. The factory is ISO 9001:2015 certified.
Q5. How does your pricing compare to Waterdrop or Frizzlife?
Our OEM cost for a 1000 GPD system is significantly below the wholesale cost of equivalent branded products. This enables our OEM partners to retail at $199-$299 while maintaining healthy margins — compared to Waterdrop G3P800 at $399-$539.
Q6. Can you add a smart faucet with TDS display?
Yes, this is an optional add-on. We offer both standard chrome faucets and smart LED faucets with real-time TDS reading. The smart faucet adds approximately $8-$12 to the OEM cost.
Q7. What is the difference between a tankless RO and a regular RO system?
A traditional RO system uses a small membrane (50-100 GPD) and a 3.2-gallon pressurized storage tank. The membrane slowly fills the tank over 1-2 hours. A tankless RO system uses a high-output membrane (400-1000 GPD) to produce purified water on demand — no tank needed. Benefits: 70% less space under the sink, no risk of bacteria growth in a stagnant tank, fresher water on every pour, and a 3:1 pure-to-drain ratio that wastes far less water than older tank systems.
Q8. Is a tankless reverse osmosis system worth it?
For most households with municipal water, yes. A 1000 GPD tankless RO system fills a glass in about 6 seconds, takes up 70% less space than a tank system, produces fresher water (no stagnation), and modern models achieve 3:1 pure-to-drain ratios (75% water efficiency). The price gap has narrowed significantly — OEM tankless systems now retail at $199-$299, comparable to mid-range tank systems. The only scenario where a tank system is clearly better is in homes with very low water pressure (below 14.5 psi) and no electrical outlet under the sink.
