ECHO Flow® Hydrogen Water Machine
A filter-less hydrogen machine that fits under the sink and connects with the water filtration you already have. One compact unit with an up to 1.21 ppm flow rate at the faucet, the fridge, or the ice maker.
Faucet finish
Unit only · use your own faucet
The Echo RO/Flow Faucet™ is a secondary faucet — it sits in the corner of the sink and does not replace your primary one. Already own a compatible third-party faucet? Choose No Faucet.
10-Year WarrantyIncluded
Every ECHO Flow includes a 10-year limited warranty at no extra cost. No registration required. You're covered from day one.
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ECHO Flow® · No Faucet
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- dissolved H₂
- 1.21 ppmdissolved H₂
- internal pump
- 1.2 L/mininternal pump
- ORP, up to
- −500 mVORP, up to
- fits the cabinet
- 3.85 lbsfits the cabinet
★★★★★
“Smaller than I thought it would be which is great! Can see the bubbles from the hydrogen gas infused in the water.”
Filter-less by design
You already filter your water. Get into a healthy Flow by adding hydrogen.
Most hydrogen machines make you replace their filtration too. The Flow doesn't — it sits downstream of your reverse osmosis or whole-house system and does one job extremely well: dissolve 99.99% pure molecular hydrogen into water that's already clean, without touching its pH.
- 01
No filters to buy
Zero consumables in the hydrogen path. Your existing prefiltration keeps its own schedule; the Flow adds nothing to the shopping list.
- 02
pH stays put
The Echo Hydrogen Module™ infuses H₂ gas directly. No ionization, no mineral cartridges — the water tastes like your water.
- 03
On demand, not batched
Advanced sensing starts production the moment you open the tap and stops when you close it. Nothing sits in a tank going flat.
- 04
Enough for the house
An internal pump holds up to 1.2 litres a minute — a family’s worth of hydrogen water from one under-sink unit.
Where it plugs in
One unit. Every outlet in the kitchen.
Because the Flow lives in the cabinet rather than on the counter, its output can be split to more than one endpoint — you decide which taps in the kitchen pour hydrogen water.
- 01
The accessory faucet
The Echo RO/Flow Faucet™ installs in a spare countertop hole beside your main tap. Hydrogen water on its own dedicated spout.
- 02
The refrigerator line
Tee the Flow into your fridge’s water supply so the chilled water dispenser pours hydrogen-enriched water.
- 03
The ice maker
Same line, same result — ice made from hydrogen water, with no extra hardware on the counter.
- 04
A third-party faucet
Already have an accessory tap you like? The Flow pairs with many third-party faucets; order it without ours.
The machine
Fits well wherever it's installed.
The Flow is 9.5 × 9.5 inches on the face and 3.5 inches deep, weighing in at under four pounds. It mounts flat against the back of the cabinet, leaving the space under your sink usable.
Echo Hydrogen Module™
Our proprietary infusion module dissolves 99.99% pure molecular hydrogen into the water stream without altering pH — up to 1.21 ppm at the tap.
Internal pump
Maintains up to 1.2 litres per minute so the flow at the faucet feels normal, even downstream of a reverse osmosis tank.
Advanced sensing
Production starts when you open the tap and stops when you close it. Nothing is stored, nothing goes flat, nothing runs when you’re not drinking.
Simple set-up
One inlet, one outlet, one power lead. Most installs are a single visit, and the digital manual walks through each connection.
Four things to check under your sink.
Most kitchens already meet all four. If you're unsure about any of them, send us a photo of your cabinet and we'll tell you before you buy.
Prefiltration in place
A reverse osmosis or whole-house filtration system upstream, delivering a minimum of 10 psi to the Flow. The Echo RO is the natural pairing if you don’t have one.
Room in the cabinet
9.5 × 9.5 inches of wall and 3.5 inches of depth. It mounts flat, so it fits alongside an RO tank in most standard sink bases.
A hole for the faucet
¹⁵⁄₁₆-inch to 1-inch, for the accessory faucet. Many countertops already have one; an installer can drill one inexpensively if not.
A live outlet
Constant power under the sink — commonly shared with the garbage disposal circuit. No dedicated line needed.
No prefiltration yet?
Add the Echo RO and you have the whole system.
The Flow requires prefiltration — a whole-house system or reverse osmosis, minimum 10 psi at the inlet. If you don't have one, the Echo RO is the unit it was engineered around: they install in the same cabinet, on the same faucet, in one visit.
Works downstream of
- Echo RO
- Engineered pairing
- Third-party RO
- Supported · min 10 psi
- Whole-house filtration
- Supported
- Unfiltered tap or well
- Not supported
Unfiltered municipal or well water straight into the Flow is not supported — prefiltration protects the hydrogen module and is required by the warranty.
The science
We don't just follow the science. We advance it.
Molecular hydrogen is a selective antioxidant — it interacts with reactive oxygen species rather than flooding the body with electrons. 2,276 peer-reviewed studies have examined it.
Browse the research hub →Oxidative stress
Molecular hydrogen as a selective antioxidant — reactive oxygen species and cellular balance
Hydration
Effects of hydrogen-rich water consumption on antioxidant capacity in healthy adults
Gut health
Hydrogen-rich water and the gut microbiome — mechanisms under study
Metabolic markers
Hydrogen-rich water and markers of oxidative balance in metabolic syndrome
Product Specifications
- Hydrogen production
- Up to 1.21 ppm
- ORP
- Up to −500 mV*
- Flow rate
- Up to 1.2 L/min
- Filtration
- None · requires prefiltration
- Minimum inlet pressure
- 10 psi
- Product dimensions
- 9.5 × 9.5 × 3.5 in
- Shipping dimensions
- 14 × 10 × 6 in
- Weight
- 3.85 lbs
- Installation
- Under-counter
- Power
- Standard household outlet
- Faucet finishes
- Chrome · Stainless · Matte black · Oiled bronze
- Warranty
- 10 years
*ORP figures depend on source water chemistry and flow rate.
Frequently Asked Questions
Reviews
What owners report.
- 57
- 40
- 30
- 20
- 11
88%would recommend this product
Reviews collected by ECHO Water from ECHO Flow® customers.
- KP11 months ago
Kindra P.
Verified Buyer
Hydrate for better health!
I’m so excited to get my new Echo system. I’ve wanted one for a long time and have reviewed many. This is by far superior. I look forward to all of the health benefits that come with drinking hydrogen water.
Was this helpful? - D1 year ago
Donald
Verified Buyer
1 stars
1 stars
Was this helpful? - CH1 year ago
Chad H.
Verified Buyer
Works well!
Smaller than I thought it would be which is great! Can see the bubbles from the hydrogen gas infused in the water.
Was this helpful?