Echo Flow Under-Sink Hydrogen Water Machine

General Information

• Manufacturer: Echo Water
• Product: Echo Flow® Hydrogen Water Machine
• Former Model Name: Echo H2® Server
• System Type: Under-Sink Molecular Hydrogen Water Generator
• Primary Application: Home & Light Commercial Use
• Installation Location: Under-Counter / Under-Sink

Hydrogen Generation & Performance

• Hydrogen Technology: Proprietary Echo Hydrogen Module™
• Hydrogen Generation: On-Demand Molecular Hydrogen Infusion
• Dissolved Hydrogen Concentration: Up to 1.21 ppm (1.21 mg/L)
• Molecular Hydrogen Purity: 99.99% (Manufacturer-Stated)
• Oxidation-Reduction Potential (ORP): Up to −500 mV
• Maximum Water Flow Rate: 1.2 L/min (Approximately 0.32 GPM)
• Water Delivery: Integrated Internal Pump
• Activation: Automatic Flow-Sensing Technology
• Water pH: No Intentional pH Modification

Water Filtration & Compatibility

• Integrated Filtration: None — External Prefiltration Required
• Compatible Filtration: Reverse Osmosis or Suitable Whole-House Filtration
• Recommended Filtration System: Echo RO™ Tankless Reverse Osmosis System
• Minimum Inlet Water Pressure: 10 PSI
• Water Line Compatibility: 1/4-Inch Tubing
• Tubing Material: Food-Grade Polyethylene (PE)
• Tubing Certification: NSF/ANSI 61 (Manufacturer-Stated)
• Unfiltered Water Compatibility: Not Supported

Water Dispensing & Faucet Options

• Dispensing Method: Dedicated Accessory Faucet or Compatible Water Outlet
• Faucet Compatibility: Echo RO/Flow Faucet™ or Compatible Third-Party Faucet
• Available Faucet Finishes: Chrome, Stainless Steel, Matte Black, Oil-Rubbed Bronze
• Additional Connections: Compatible Refrigerator Water Dispensers & Ice Makers
• Faucet Mounting Hole: 15/16–1 Inch Diameter

Electrical & Operating Requirements

• Power Consumption: 100 W
• DC Input: 12V / 8.3A
• Power Connection: Standard Household Electrical Outlet via Power Supply
• Power Availability: Continuous Electrical Supply Required
• Operating Temperature: 41°F–104°F

Dimensions & Construction

• Product Height: 9.5 Inches
• Product Width: 9.5 Inches
• Product Depth: 3.5 Inches
• Product Weight: 3.85 lbs
• Housing Finish: Silver Metallic
• Installation Profile: Compact, Wall-Mountable Under-Sink Design

Warranty

• Manufacturer Warranty: 10-Year Limited Warranty
• Prefiltration Requirement: Required for Warranty Coverage
• Manufacturer Support: USA-Based Customer Service

Designed for convenient under-sink installation, the Echo Flow Hydrogen Water Machine features a compact, space-saving profile measuring just 9.5 inches high, 9.5 inches wide, and 3.5 inches deep. Its slim design allows the system to mount inside a kitchen sink cabinet, helping preserve valuable storage space while keeping countertops clear of additional equipment.

Ideal for residential kitchens and compatible light-commercial environments, the Echo Flow integrates with existing reverse osmosis or suitable whole-house filtration systems. Its discreet installation allows hydrogen-enriched water to be dispensed through a dedicated accessory faucet or compatible refrigerator water connection, bringing everyday convenience to hydrogen-rich hydration without disrupting the surrounding space.

The Echo FLOW Hydrogen Water Machine is backed by a manufacturer-provided 10-year limited warranty, reflecting Echo Water’s commitment to long-term product support and reliability.

Warranty coverage applies to qualifying manufacturing defects and follows a prorated schedule. During the first two years, eligible warranty claims receive 100% coverage under the manufacturer's terms, with decreasing coverage levels in subsequent years. Echo Water may provide repairs, replacement equipment, or warranty credit at its discretion. Shipping, handling, and certain other expenses may remain the customer's responsibility.

Warranty coverage is provided directly by Echo Water, applies to the original owner, and is subject to the manufacturer's terms, conditions, and exclusions. Please see the SanaVi Warranty Policy Page for further details and information.

Echo Water provides dedicated U.S.-based customer support to assist with product questions, installation guidance, troubleshooting, filter replacement, and warranty-related inquiries for the Echo Flow device. Support is available through phone, email, and an online help center, offering resources for both countertop and under-sink configurations.

Ongoing support includes access to user guides, step-by-step operating instructions, filtration maintenance guidance, and troubleshooting articles designed to help maintain consistent system performance. For warranty claims or service-related needs, Echo Water follows a defined support process to assist customers with product concerns and resolution.

For setup/assembly guidance and operation please refer to the ECHO Flow User Manual.

Please refer to the Echo Flow Manual included in your delivery for product related safety information.

For important health and safety information, please review SanaVi's Medical & Safety Disclaimer Page before using this equipment.

By purchasing or using products distributed by SanaVi Health Systems LLC, customers acknowledge that they have read and understood this Medical & Safety Disclaimer and agree to use all equipment responsibly and in accordance with Manufacturer guidance.

What is the Echo FLOW Hydrogen Water Machine?

The Echo FLOW Hydrogen Water Machine is an under-sink hydrogen water generator designed to enrich prefiltered drinking water with dissolved molecular hydrogen (H₂). It produces hydrogen-rich water on demand, delivering concentrations up to 1.21 parts per million (ppm) without changing the water's pH. Its compact, filter-less design integrates with compatible reverse osmosis or whole-house filtration systems and can supply hydrogen-enriched water to a dedicated faucet, refrigerator, or ice maker.

Are the Echo Flow and Echo H2 Server the same machine?

Yes. The Echo Flow Hydrogen Water Machine was formerly marketed as the Echo H2 Server. Both names refer to Echo Water's under-sink molecular hydrogen enrichment system, designed to add dissolved hydrogen to prefiltered drinking water without altering its pH. Echo Flow is the current product name, while Echo H2 Server may still appear in older product documentation, reviews, and online references.

How does the Echo FLOW Hydrogen Water Machine work?

The Echo FLOW uses Echo Water's hydrogen enrichment technology to introduce molecular hydrogen gas into an existing stream of filtered drinking water. An internal pump supports water delivery at flow rates up to 1.2 liters per minute, while automatic sensing activates hydrogen production when water is dispensed and stops when flow ends. The process adds dissolved hydrogen without altering the water's pH and does not require a separate hydrogen-water storage tank.

What are the potential benefits of drinking hydrogen-rich water?

Hydrogen-rich water is being studied for its potential effects on oxidative stress, antioxidant activity, exercise-related recovery, and cellular health. Molecular hydrogen has attracted scientific interest because of its possible interactions with reactive oxygen species and biological signaling pathways. Research is ongoing, and although some human studies have reported promising findings, larger and more rigorous clinical trials are needed to establish consistent health benefits. The Echo FLOW provides a convenient way to incorporate hydrogen-enriched water into everyday hydration routines.

Does hydrogen water actually work?

Hydrogen water can deliver dissolved molecular hydrogen, and scientific studies have investigated its potential biological effects. Some clinical trials have reported favorable changes in selected markers of oxidative stress, inflammation, and exercise-related recovery, while other findings remain inconsistent or preliminary. The effectiveness of hydrogen-rich water for specific health outcomes has not been conclusively established. The Echo FLOW is designed to produce hydrogen-enriched drinking water, with a manufacturer-reported concentration of up to 1.21 ppm under specified operating conditions.

Does the Echo FLOW require a reverse osmosis system?

The Echo FLOW requires compatible prefiltration before water enters the machine, but a reverse osmosis system is not the only option. It can operate downstream of the Echo RO, compatible third-party reverse osmosis equipment, or suitable whole-house filtration systems. Incoming water pressure must meet the manufacturer's minimum requirement of 10 psi. Prefiltration is necessary to protect the hydrogen enrichment module and maintain warranty eligibility. Unfiltered municipal or well water should not be connected directly to the Echo FLOW.

Can the Echo FLOW Hydrogen Water Machine be installed under a kitchen sink?

Yes. The Echo FLOW is designed for under-counter installation and measures approximately 9.5 × 9.5 × 3.5 inches, weighing approximately 3.85 pounds. Its compact housing allows it to fit inside many standard kitchen sink cabinets alongside compatible water filtration equipment. Installation requires an appropriate filtered water supply, suitable plumbing connections, and a continuously powered electrical outlet. A dedicated drinking-water faucet may also require an available countertop opening measuring approximately 15/16 to 1 inch.

Can the Echo FLOW supply hydrogen water to a refrigerator or ice maker?

Yes. The Echo FLOW can be connected to compatible refrigerator water dispensers and ice-maker supply lines, extending hydrogen enrichment beyond a dedicated drinking-water faucet. This configuration allows hydrogen-enriched water to be delivered through connected household appliances. However, dissolved hydrogen concentrations may decrease with storage, refrigeration, freezing, or time, so the hydrogen content of dispensed water or ice may differ from the concentration produced directly by the machine. Installation compatibility should be confirmed before connecting multiple water outlets.

What does 1.21 ppm hydrogen concentration mean?

The Echo FLOW's rated hydrogen concentration of up to 1.21 ppm refers to the amount of dissolved molecular hydrogen in the water. In water, 1.21 ppm is approximately equivalent to 1.21 milligrams of hydrogen per liter. This measurement describes hydrogen concentration rather than water purity, mineral content, or pH. Actual concentrations can vary depending on water characteristics, flow rate, and operating conditions. The 1.21 ppm specification represents the manufacturer's stated maximum production level, not a guaranteed concentration under every installation condition.

Can I connect the Echo FLOW to my existing kitchen faucet?

The Echo FLOW is designed to work with a dedicated drinking-water outlet rather than directly replacing or automatically supplying hydrogen water through a standard kitchen faucet. Echo offers compatible accessory faucets in several finishes, and certain third-party drinking-water faucets may also be suitable. Customers with an existing reverse osmosis faucet may be able to incorporate the FLOW into their current plumbing configuration, depending on faucet and connection compatibility. Verify the installation requirements before selecting a faucet or modifying existing plumbing.

What should I consider before purchasing the Echo FLOW Hydrogen Water Machine?

Before purchasing the Echo FLOW, consider your existing water filtration equipment, available under-sink space, incoming water pressure, electrical access, and preferred dispensing locations. The system requires compatible prefiltration, a minimum inlet pressure of 10 psi, and a continuously powered electrical outlet. Customers should also determine whether they need an Echo accessory faucet or can use an existing compatible drinking-water faucet. Refrigerator and ice-maker connections may require additional plumbing considerations. Reviewing these requirements before purchase helps determine whether the FLOW fits your home's existing water system.

Does the Echo FLOW filter or purify drinking water?

No. The Echo FLOW is a hydrogen enrichment system, not a water filtration or purification device. It introduces dissolved molecular hydrogen into drinking water but does not independently remove sediment, chlorine, heavy metals, microorganisms, or other potential contaminants. The FLOW contains no internal filtration cartridges and requires compatible upstream prefiltration, such as a reverse osmosis or whole-house filtration system. It can be paired with the Echo RO to combine water purification and hydrogen enrichment in a connected under-sink system.

For proper setup, operation, and ongoing use, please refer to the ECHO Flow User Manual included with your unit. The manual provides step-by-step guidance on installation, program selection, safety considerations, and recommended usage to help ensure consistent and appropriate performance over time.

For additional assistance, Echo Water provides live, U.S.-based customer support to help with setup questions, operating guidance, troubleshooting, maintenance, and warranty-related inquiries.

The Echo FLOW Hydrogen Water Machine is designed for low-maintenance operation, with no internal filtration cartridges requiring routine replacement. Maintaining a clean, properly functioning upstream water filtration system is essential for consistent water flow, hydrogen production, and long-term equipment performance. Periodically inspect the water supply lines for kinks or restrictions, check connections for leaks, and clean or replace upstream filtration components according to their manufacturer's recommendations.

For exterior care, gently wipe the unit with a soft, damp cloth using water only. Avoid solvents, alcohol-based cleaners, abrasive materials, or excessive moisture around electrical components. Keep the FLOW installed in a cool, dry location with adequate ventilation, and avoid operating the system continuously for more than 10 minutes without allowing a five-minute rest period.

If the system experiences reduced water flow, unusual water taste, or diminished hydrogen output, inspect the incoming water supply and prefiltration system first. Flush the system with clean, filtered water when appropriate, and contact Echo Water for technical assistance if performance issues persist. Do not disassemble the hydrogen generator or introduce cleaning solutions into the system unless specifically instructed by the manufacturer.

For complete care, troubleshooting, and maintenance instructions, please refer to the user manual that comes with your delivery.

Free shipping to all 50 U.S. states, U.S. territories, and AA/AE/AP military addresses is included with this product, along with shipping insurance.

Orders are typically processed within 1-2 business days, with tracking information provided once shipped so you can follow delivery progress in real time.

Delivery timelines may vary slightly based on location, carrier routing, or seasonal factors such as weather and holidays.

Standard delivery times to the lower 48 U.S. States is approximately 2-7 business days depending on your location. Shipping times to Hawaii, Alaska and U.S. territories may take longer due to distance, port delays and logistics.

For any questions regarding your order, Echo Water provides ongoing support, and SanaVi Health Systems is also available to assist with order updates as needed.

• Orders typically ship within 1–2 business days after processing
• Shipping transit times within the United States generally takes 2–7 business days
• Shipping transit times to Alaska, Hawaii, U.S. territories and Military addresses generally take 3-14 days
• Tracking information is provided with every order for real-time updates
• Orders are delivered via standard carriers on business days (Monday–Friday)
• Delivery timing may vary based on location, weather, holidays, or carrier logistics
• For complete information about shipping, delivery, freight inspection, and damage reporting, please review our Shipping, Delivery & Damage page.

Getting started with the Echo FLOW Hydrogen Water Machine begins with connecting the unit to a compatible prefiltered water supply and designated drinking-water outlet. Designed for under-sink installation, the FLOW integrates with suitable reverse osmosis or whole-house filtration systems to provide hydrogen-enriched drinking water on demand.

Once properly installed, connected to electrical power, and prepared for operation according to the manufacturer's instructions, the FLOW automatically activates hydrogen production when water is dispensed and stops when water flow ends. Its automated operation eliminates the need to manually initiate individual hydrogen production cycles.

For complete installation instructions, connection diagrams, and initial operating guidance, please refer to the official Echo Manual which is provided with your delivery.

We offer flexible financing through Shop Pay Installments in partnership with Affirm. To explore available payment plans, simply click the “Check your purchasing power” link below the Shop Pay logo which is located below the "Add To Cart" button, or select the “Buy with Shop” button. Available installment options will appear during checkout based on eligibility.

Additionally, if you choose PayPal at checkout, you may also access PayPal’s Buy Now, Pay Later options directly through PayPal. After selecting PayPal as your payment method, their available installment plans will be presented within the PayPal checkout environment.

Financing availability and terms are determined by the respective provider and subject to their eligibility approval.

For more details please see our Payments & Financing Page.

This product is governed by the Echo Water-specific return terms below. Review the current SanaVi Returns & Cancellations Policy prior to purchase for complete return eligibility, fees, conditions, and instructions.

• Return window: 60 days from delivery
  
• Condition: Product must be in resalable condition
  
• Returns: Accepted for both defective and non-defective products
  
• Return label: Prepaid return shipping label provided for approved returns
  
• Return shipping costs: Covered when the provided prepaid label is used
  
• Restocking fee: None
  
• Exchanges: Available for eligible products within 60 days
  
• Refund processing: Within 14 days after the return is received, inspected, and approved
  
• Cancellations: Orders may be canceled as long as the order has not yet shipped

Echo Water is a hydrogen wellness company focused on advancing hydration through systems that generate hydrogen-rich water using molecular hydrogen technology. Operating within a growing area of interest around hydrogen-based approaches, the company develops solutions designed to bring controlled hydrogen generation into everyday use. Their product line centers on delivering hydrogen-rich water through repeatable, system-based processes, with the Echo Flask offering a portable solution for daily routines.

With an emphasis on engineering, material integrity, and consistent performance, Echo Water continues to refine hydrogen generation technology for both reliability and convenience. Supported by U.S.-based operations and manufacturing ties within the United States, the company positions itself at the intersection of wellness and applied technology—developing solutions designed to integrate seamlessly into modern lifestyles focused on performance, balance, and long-term health.

We make every reasonable effort to keep product information accurate. Because some products are updated or fulfilled directly by the manufacturer, specifications, included components, packaging, images, or minor design details may change without notice. If a material change affects an order, SanaVi will review the matter in good faith and work toward a reasonable resolution.

For more information, please see the Manufacturer Product Updates & Specification Changes section of our Terms of Service.

Medical and Safety Warnings:

The Echo FLOW Hydrogen Water Machine is designed to produce hydrogen-enriched drinking water for everyday hydration and general wellness use. It is not intended to diagnose, treat, cure, or prevent any disease. Individuals with existing medical conditions, specific health concerns, or medically prescribed fluid restrictions should consult a qualified healthcare professional before incorporating hydrogen-rich water into their wellness routine.

For safe operation, the FLOW must be connected to a compatible prefiltered, potable water supply and installed according to the manufacturer's plumbing, electrical, and operating requirements. Do not modify, disassemble, or operate the system if electrical components, tubing, or connections appear damaged. Discontinue use if the system exhibits unusual operation, leaks, or other performance concerns.

Please follow all installation, operation, maintenance, and safety instructions provided in the official Echo FLOW User Manual.

*** For important health and safety information, please review SanaVi's Medical & Safety Disclaimer Page before using this equipment.

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