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Keeping an oxygen concentrator running when the lines go down

A concentrator only makes oxygen while it has power. This page covers how a home hydrogen system is designed to help, and where its limits are.

Why outages are different when you use oxygen

Most households can shrug off a few hours without power. Someone on a concentrator cannot. The machine stops the moment the supply drops, the backup cylinders in the hallway start counting down, and in a rural area the next delivery may be a long drive away. Storms that bring lines down also tend to close the roads that cylinder deliveries use.

That is why the first steps never change: keep your medically dependent registration with your power company, keep your clinician's outage plan current, and keep the cylinders they prescribe. A home system sits alongside that plan. It does not replace it, and it is not a hospital-grade supply.

What it would keep running

  • Oxygen concentrator by the bed
  • Pulse oximeter and phone charging
  • Bedroom heater on cold nights
  • Lights and the fridge for medications

How the switch-over is designed to work

The battery and the 15 kW hybrid inverter run in UPS mode, so when the grid fails the house keeps running without a gap. A concentrator does not see a drop, does not alarm, and does not need to be restarted. Behind the battery, stored hydrogen feeds a PEM fuel cell that keeps recharging it for as long as the store lasts, which is designed to be days rather than hours.

How it works →
The H2OME loop: an electrolyser splits water into hydrogen, the hydrogen is stored in a tank for weeks, a fuel cell turns it into electricity for your home, and the water returns to the loop.

Living with it day to day

The system charges itself overnight on cheap off-peak power, or from a wind turbine or micro-hydro off the grid. There is no generator to start in the rain at 2am and no exhaust near a bedroom window. Redundant leak sensors, automatic shutdown and venting are part of the design, and the hydrogen is stored at 30 bar or less. Because hydrogen and oxygen equipment both deserve respect, installation planning keeps the store outside and well away from the concentrator and any cylinders.

Questions

Can this replace my oxygen cylinders?

No. Keep every cylinder your clinician prescribes and keep your power company's medically dependent registration. The system is designed to keep the concentrator powered through outages, but it is a backup to your medical plan, not a substitute for it or for a hospital-grade supply.

Will the concentrator restart or alarm when the grid fails?

It is designed not to. The battery and inverter run in UPS mode, so the concentrator keeps receiving power with no break. Talk to your clinician and the equipment supplier about your exact model before relying on any backup arrangement.

Is it safe to have hydrogen near oxygen equipment?

Both need careful placement. The hydrogen store sits outside at 30 bar or less with leak sensors, automatic shutdown and venting, and the design is to AS/NZS 60079 and ISO 19880. The concentrator stays indoors, well apart from it.

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