Does the Echo Flask filter my water?

No. It is filter-less and only adds hydrogen. Pair it with a reverse-osmosis or whole-home system if you need filtration or softening.

How much hydrogen does it add?

Echo rates it at up to 8 ppm in 20 minutes, and the spec sheet lists 1.21 ppm hydrogen-enriched water. Actual levels depend on source water and run time.

Will it work with my reverse-osmosis system?

Yes. It connects with 1/4-inch tubing and is listed as compatible with RO and home water systems.

What comes in the box?

The under-sink unit, a 12 oz PPSU bottle, and a faucet unless you choose the no-faucet option. Tubing and fittings are not listed.

Is it worth it over a hydrogen water pitcher?

An under-sink unit saves counter space and avoids refilling a pitcher, but a pitcher costs less and needs no plumbing. Choose this if you want a fixed installation.

When is the Echo Flask cheapest?

Hydrogen water machines tend to dip during holiday sales and new-model clearances. Check the price history before buying.

Echo Flask

Last price we saw

$299.99at Amazon, last seen Nov 1

Prices change often: ask the agent below to check today's price at every store.

Prices are checked against each store and labelled with when.

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Our take on the Echo Flask

The Echo Flask is an under-sink hydrogen water generator that adds dissolved hydrogen to your tap or reverse-osmosis water without any filter cartridge. It uses a dual-chamber Nafion PEM with titanium-platinum electrodes and claims up to 8 ppm hydrogen in 20 minutes, plus a 12 oz BPA-free PPSU bottle and app sync. It fits 1/4-inch tubing, runs on a 12V outlet, and comes in several finishes or without a faucet. It is a niche upgrade for people already happy with their water quality who want hydrogen-enriched drinking water.

Best forHouseholds with existing reverse-osmosis or whole-home filtrationBuyers curious about hydrogen-enriched waterKitchens wanting a filter-less under-sink add-onApp users who like tracking water data

Pros

No filter cartridges to replace
Dual-chamber PEM with titanium-platinum electrodes
Generates up to 8 ppm hydrogen in 20 minutes
Works with RO and home water systems via 1/4-inch tubing
Compact 9.5 x 9.5 x 3.5 in, 3.85 lb unit
BPA- and BPS-free PPSU bottle included

Echo Flask prices at every store

AmazonCheck price at Amazon

Echo Flask price history

Lowest price we've seen: $299.99 on Nov 1 at Amazon. Tracked across 1 store since Nov 1.

Specifications

Filter Type: Filter-less
Flow Rate: Up to 1.2L/min
Water Softener: No
With Minerals: Generates 1.21 PPM Hydrogen Enriched Water
Included Components: Faucet
Installation Location: Under sink
Primary Treatment

Questions and answers

Does the Echo Flask filter my water?: No. It is filter-less and only adds hydrogen. Pair it with a reverse-osmosis or whole-home system if you need filtration or softening.
How much hydrogen does it add?: Echo rates it at up to 8 ppm in 20 minutes, and the spec sheet lists 1.21 ppm hydrogen-enriched water. Actual levels depend on source water and run time.
Will it work with my reverse-osmosis system?: Yes. It connects with 1/4-inch tubing and is listed as compatible with RO and home water systems.
What comes in the box?: The under-sink unit, a 12 oz PPSU bottle, and a faucet unless you choose the no-faucet option. Tubing and fittings are not listed.
Is it worth it over a hydrogen water pitcher?: An under-sink unit saves counter space and avoids refilling a pitcher, but a pitcher costs less and needs no plumbing. Choose this if you want a fixed installation.
When is the Echo Flask cheapest?: Hydrogen water machines tend to dip during holiday sales and new-model clearances. Check the price history before buying.