W100 as the easy entry point
Ideal if you want a compact countertop solution without installation.
See more detailsUse code LONGEVITY to save €50 on any Hydrofast countertop reverse osmosis system – W100 or C300. No installation, perfect for renters and travelers.
Valid on every system at eu.hydrofast.com
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Quick answer
Yes — especially if you want a flexible water setup without installation and want to test hydrogen-water or countertop systems in daily life. Hydrofast is strongest for users who actively compare water quality and newer water technologies.
Here you will find the key models and alternatives sorted by goal.
Ideal if you want a compact countertop solution without installation.
See more detailsUseful if you want more power and stronger features within the Hydrofast lineup.
See more detailsGood if you prioritize hot water, UV, and classic countertop RO features.
See more detailsHelpful if you want to compare hydrogen water, reverse osmosis, and other water setups.
See more detailsThe Hydrofast page covers far more than just “Hydrofast discount code”. It also targets hydrogen-water reviews, Hydrofast W100 reviews, H2 measurement, water-filter comparisons, and flexible countertop-system searches.
Those who want to try hydrogen water without installing a large system will find Hydrofast a practical entry point. For classic reverse osmosis with a hot-water function, Jimmy is a useful alternative.
You can find more context in the Water section, the Advisor, and the complementary JIMMY page.
— Vorteile
Portable reverse osmosis with hot, cold, and sparkling water – code LONGEVITY saves €50 on every system.
Just set it up, fill the tank and start. No pipework, no modifications.
No installation needed – set up and use anywhere with power outlet.
Removes up to 99% of contaminants, microplastics, heavy metals and limescale.
Intuitive design, low maintenance and simple filter changes.
Modern RO membrane for fast filtration with minimal water loss.
Space-saving on the countertop with a modern look.
pH-Wert
7.0
NeutralORP
-450 mV
OptimalH₂-Konz.
1.5 ppm
OptimalTDS
<20 ppm
OptimalMore about my test results"I achieve these values through my daily protocol with Hydrofast."
These are my personal, documented results. Individual results may vary.
Every 1–2 weeks: Benedikt's latest biomarker results, new longevity protocols, fresh research — plus exclusive partner discounts before they go public.
Hydrofast tablets dissolve in water and release molecular hydrogen (H2), a very small, neutral gas molecule that diffuses easily through tissue. The research interest in H2 comes from its selectivity: in cell and animal work it reacts preferentially with the most aggressive reactive oxygen species while leaving the signalling molecules your body needs for training adaptation largely alone. That is the mechanistic argument — it is not the same thing as a proven clinical outcome.
Human evidence exists but is early and mostly small: short trials on exercise recovery, subjective fatigue and some metabolic markers, typically with a few dozen participants over weeks rather than years. Treat hydrogen as a low-risk, low-cost experiment inside an otherwise solid routine, not as a pillar of it. If sleep, training and protein intake are not in place, hydrogen will not compensate for them.
Practical handling matters more than dose optimisation. H2 escapes quickly, so dissolve the tablet in a closed bottle or a glass you drink within a couple of minutes, use cold water, and do not prepare it hours in advance. Most users take it before training or in the morning; there is no evidence that splitting the dose is better.
Tip for your water setup
If you prefer a professional under-sink solution, OsmoFresh is an excellent choice – Made in Germany quality. For a hot water alternative with integrated filter, we recommend the JIMMY water dispenser.
Real test results with the Hydrofast W100 – measured by Benedikt Keck

Test strip comparison: Left tap water, right Hydrofast osmosis water
Test methodology: Standardized water test strips with color comparison. All parameters were measured under identical conditions.
The Hydrofast W100 significantly reduces almost all measured contaminants and minerals. The reverse osmosis particularly shows its strength with chlorine, heavy metals, and hardness. A clear before-and-after difference that is noticeable in taste and water quality.

Triple comparison with identical test strips: The Hydrofast C300 delivers equally pure water as the OsmoFresh Fusion Pro – both far superior to tap water.
Portable RO water purifiers with hot, cold, and sparkling options. Code LONGEVITY = €50 off every system.

Compact countertop RO system without installation. Perfect for rentals.

Premium All-in-One: Sparkling water, ice, hot water, 6-stage filtration, UV sterilization.
“Hydrofast is perfect for my situation as a renter. No installation, pure water anywhere I move – and code LONGEVITY saves €50 on every system, including the C300 with sparkling water.”
Benedikt's test and hands-on report on the Hydrofast W100 & C300 reverse osmosis system.

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Portable reverse osmosis water purifier – €50 off all systems with code LONGEVITY. No installation required.
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