Key takeaways
- A hydrogen inhaler is a benchtop PEM electrolyser plus a delivery accessory.
- Output is rated in ml/min of H₂ at a stated purity (typically see model documentation).
- Sessions usually run 30–120 minutes; some users run longer continuous sessions.
- Distilled or deionised water is required to protect the membrane.
What's inside the machine
Every PEM inhaler contains a water reservoir, a PEM electrolyser stack, a DC power supply, sensors, a small control board and an outlet port. The machine pulls water across the membrane, splits it, vents the oxygen and routes the hydrogen to the user.
Pricier machines add: active cooling for longer continuous run-time, larger stack area for higher ml/min, an integrated touchscreen, and a second outlet for dual users.
How a session works
Fill the reservoir with distilled water, connect a cannula or mask, set the timer, and start. The machine reaches steady-state output within a minute or two and then runs quietly until the timer expires.
Single-user sessions use a nasal cannula. Two people can share a machine with a Y connector and two cannulas. A face mask increases inhaled concentration when sinus congestion is a factor.
What the spec sheet really tells you
Flow rate (ml/min) determines how quickly H₂ reaches the user. Purity (%) tells you how clean that flow is. Continuous run-time (minutes/hours) reveals whether cooling is engineered for back-to-back sessions or short bursts.
Two machines with the same headline ml/min can perform very differently: one may throttle after 60 minutes because the stack overheats; the other may run all day.
Engineering notes
- · Membrane life is shortened by tap-water minerals — never use tap, spring or filtered water.
- · Higher output machines draw more current. Confirm your mains circuit can handle continuous load.
Frequently asked questions
Related products
Related learning
Purity, tablets & bathing
- Hydrogen Bathing vs Hydrogen Tablets — Saturation versus dilution, compared in full.
- Hydrogen Water Purity — model-specific gas composition from SPE/PEM electrolysis.
- Hydrogen Tablets: What You Should Know — What dissolving reactive material can leave behind.
Ready to choose a machine?
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Source content adapted from guides/hydrogen-inhalation.
