ECHO Flow For households that already have a quality filtration system in place and want to add the power of molecular hydrogen to every drop that flows through their home, the Echo Flow is the perfect solution. Compact, filterless, and remarkably versatile, the Echo Flow is an under-sink hydrogen water generator that partners seamlessly with your existing reverse osmosis or whole-house filtration system to deliver pure hydrogen-enriched water on demand — straight from your faucet, refrigerator, and even your ice maker. Unlike the Echo H2 and Echo Ultimate which include their own built-in filtration, the Echo Flow is designed to work downstream of your existing water filtration setup. Your water is already clean and purified before it reaches the Echo Flow, which then focuses exclusively on one thing — infusing it with molecular hydrogen using the proprietary Echo Hydrogen Module technology. The result is hydrogen-enriched water with up to 1.21 ppm of dissolved hydrogen and a negative ORP of up to -500mV, delivered at a flow rate of up to 1.2 liters per minute — enough to supply an entire household without any waiting or storing. Because the Echo Flow is filterless it requires virtually no ongoing maintenance beyond the machine itself. There are no filter cartridges to track, replace, or purchase — your existing filtration system handles all of that. This makes the Echo Flow an ideal long-term solution for health-conscious families who want the benefits of hydrogen water woven into every part of their daily routine without adding complexity to their kitchen setup. The unit is remarkably compact at just 9.5 inches tall, 9.5 inches wide, and 3.5 inches deep, and weighs only 3.85 lbs, making it easy to fit in even the tightest under-sink cabinet. Installation requires a standard electrical outlet, a connection to your existing filtration system with a minimum water pressure of 10 psi, and a dedicated faucet hole in your countertop or sink. The Echo Flow comes with the Echo RO/Server Faucet and is also compatible with many third-party faucets if you prefer an alternative finish. Many kitchen sinks already have a pre-drilled accessory hole — if yours does not, a countertop professional can drill one quickly and affordably. Please note the Echo Flow requires pre-filtration via an existing reverse osmosis or whole-house filtration system. It is not designed to be used with unfiltered tap water directly. If you do not currently have a filtration system in place we recommend pairing it with the Echo Reverse Osmosis system, available separately on our site. Specifications Model: Echo Flow (formerly Echo H2 Server) Type: Under-sink filterless hydrogen water generator Hydrogen production: Up to 1.21 ppm of dissolved molecular hydrogen ORP: Up to -500mV Flow rate: Up to 1.2 liters per minute Technology: Proprietary Echo Hydrogen Module pH: Water pH is not altered Dimensions: 9.5 inches tall x 9.5 inches wide x 3.5 inches deep Weight: 3.85 lbs Installation: Under-sink, requires existing RO or whole-house filtration system (minimum 10 psi) Power: Standard electrical outlet, can share power with garbage disposal Connectivity: Connects to kitchen faucet, refrigerator water line, and ice maker simultaneously Faucet finish options: Oiled bronze, chrome, stainless steel, and matte black BPA-free construction Warranty: 10-year manufacturer warranty Pre-Filtration Requirement The Echo Flow must be used with a pre-existing reverse osmosis or whole-house filtration system. It is compatible with the Echo Reverse Osmosis Filter and most third-party RO and whole-house systems. Features Filterless Design: No filter cartridges to buy, track, or replace — works downstream of your existing filtration system for truly hands-off maintenance Proprietary Echo Hydrogen Module: Infuses water with molecular hydrogen without using acids or altering the water's natural pH Up to 1.21 ppm Hydrogen Production: Powerful hydrogen concentration with a negative ORP of up to -500mV for selective antioxidant support High Flow Rate: Up to 1.2 liters per minute delivers enough hydrogen-enriched water for an entire household without waiting or storing Multi-Point Connectivity: Connects simultaneously to your kitchen faucet, refrigerator water line, and ice maker for hydrogen water throughout your home On-Demand Generation: Advanced sensing technology produces hydrogen-enriched water the moment you turn on the tap — no pre-filling or waiting Ultra-Compact Under-Sink Design: At just 3.85 lbs and a slim 3.5-inch depth it fits easily in even the most space-limited under-sink cabinet BPA-Free Construction: No harmful additives, preservatives, or artificial flavors — just pure hydrogen-enriched water Neutral pH Water: Hydrogen is infused without altering the acidity of your water keeping it clean, balanced, and gentle for daily drinking Compatible with Echo RO and Third-Party Systems: Works with the Echo Reverse Osmosis Filter and most existing whole-house or RO filtration setups How It Compares to the Echo H2 and Echo Ultimate The Echo Flow is the right choice if you already have a whole-house or reverse osmosis filtration system and want to add hydrogen water to your home without adding another filtration layer. The Echo H2 includes its own built-in five-stage filtration and is the better choice for households without an existing filtration system who want a standalone countertop or under-sink hydrogen water machine. The Echo Ultimate is the all-in-one premium choice offering hydrogen, alkaline, acidic, and filtered water from a single unit. If simplicity, whole-home hydrogen coverage, and minimal maintenance are your priorities, the Echo Flow delivers beautifully. Warranty 10-Year Manufacturer Warranty: Long-term confidence in your investment backed by one of the strongest warranties in the category
