The short answer: A modern hyperbaric chamber with an oxygen concentrator makes its own oxygen from room air, typically 90 to 96% purity at 10 liters per minute or more, and delivers it straight to your mask. There are no tanks, no refills, and roughly $2 of electricity per session.
One clarification first, because this query carries a common confusion: an oxygen concentrator is not an alternative to a hyperbaric chamber. In a modern system it is the chamber’s oxygen supply, the machine that feeds what you breathe during a session. Understanding that one component explains most of what separates current equipment from the tank-fed systems that came before it.
Disclosure: Superhuman Chambers manufactures hyperbaric chambers with integrated concentrator-fed oxygen delivery. This article is educational and is not medical advice.
Where the oxygen comes from: the concentrator in plain terms
An oxygen concentrator does not generate oxygen. It concentrates the oxygen already in the room. The process, called pressure swing adsorption (PSA), runs in a continuous loop:
- The unit pulls in room air, which is about 21% oxygen and 78% nitrogen.
- A compressor pressurizes the air, and a cooling stage keeps the machine from overheating.
- The air passes through sieve beds filled with zeolite, a mineral that traps nitrogen and lets oxygen through.
- What comes out is oxygen-rich air at 90 to 96% purity, delivered at a set flow rate and pressure.
- That flow travels through tubing to the occupant’s mask inside the chamber.
Because the raw material is ordinary room air, the supply never runs out while the unit has power. There is nothing to refill, nothing to swap, and nothing to schedule a delivery for. This is the same device class used in home respiratory care for decades, engineered here to feed a pressurized environment.
How the oxygen reaches you: BIBS and masks, not a filled cabin
There are two ways to architect oxygen delivery in a hyperbaric chamber, and the difference matters for safety and comfort:
- Legacy monoplace design: the entire chamber is pressurized with pure oxygen. The occupant breathes the cabin atmosphere directly. This works, but it fills the whole enclosure with concentrated oxygen, which raises the fire-safety stakes of everything inside it.
- Air-pressurized cabin with mask delivery: the cabin is pressurized with ordinary air, and each occupant breathes concentrated oxygen through a mask or a built-in breathing system (BIBS). The oxygen goes only to the person wearing the mask, and the exhaust vents outside the cabin. Cabin air stays close to normal air.
Modern wellness chambers use the second architecture. The experience is simple: you settle in, the cabin pressurizes with air, and you breathe through a comfortable mask, as we describe in what a first session feels like. In multi-seat systems like our multiplace chambers, every seat has its own BIBS mask fed by the same concentrator supply.
Concentrator-fed vs tank-fed: what changed
Older and clinical installations often ran on stored oxygen: compressed gas cylinders or piped medical gas. Concentrator-fed design replaced that for good reasons:
| Factor | Tank-fed oxygen | Concentrator-fed oxygen |
|---|---|---|
| Supply | Finite; runs out mid-use | Continuous while powered |
| Refills and logistics | Scheduled deliveries, cylinder swaps, storage | None |
| Storage burden | Secured upright cylinders on site | None |
| Fire profile | A leak can enrich the room’s atmosphere, and oxygen-enriched air burns far more readily | Oxygen is made on demand at breathing flow; no stored volume to leak |
| Cost per session | Gas plus delivery contracts | About $2 of electricity |
| Fit for daily use | Poor: a standard D cylinder lasts about 3.5 hours at 2 LPM, far short of daily 60–90 minute sessions at 10 LPM | Designed for it |
The tank duration math alone settles the question for regular use. A chamber session breathes 10 or more liters per minute for an hour or more; cylinder logistics simply cannot support that cadence at home or in a wellness business without turning oxygen supply into a standing operational chore.
The specs that matter when you buy
Not all concentrators are equal, and the gap between a respiratory-grade unit and an HBOT-grade system shows up in the session. What to check:
| Spec | What it means | What good looks like for HBOT |
|---|---|---|
| Flow rate (LPM) | Liters of oxygen per minute to the mask | 10 LPM or more per occupant; a weak unit under-doses the mask and dilutes the session |
| Purity at full flow | Oxygen concentration at maximum output, not at idle | 90–96% sustained at rated flow |
| Delivery pressure | Pressure pushing oxygen into the pressurized cabin | Rated above the chamber’s working pressure, so flow stays steady at 1.5 or 2.0 ATA |
| Duty cycle | How long the unit can run continuously | Rated for daily, back-to-back sessions, not intermittent home-care use |
| Noise | Sound level, usually dBA at 1 meter | Low enough to site near the session room without intruding |
| Power draw | Watts from a standard outlet | The whole system, concentrator included, should run on ordinary electrical service at about $2 per session |
| Filtration | Stages cleaning intake air | Multi-stage intake filtration; filters user-replaceable on a 3–6 month cadence |
| Ambient requirements | Intake air quality the sieve beds need | Cool, dry, clean room air; heat, humidity, and dust shorten sieve life |
Two of these deserve emphasis. Purity at full flow is the number that counts; some units advertise a peak purity that sags once flow rises, which is exactly when you need it. And delivery pressure relative to chamber pressure is the quiet failure mode: a concentrator that cannot push against a pressurized cabin starves the mask as the session reaches working depth. Pressure tiers and what they mean for the session itself are covered in pressure levels explained.
Safety implications of concentrator-fed delivery
The safety case for this design is structural, not cosmetic. No stored oxygen on site means no cylinders to secure, inspect, or vent. Mask-only delivery means the cabin atmosphere is never enriched with oxygen, so the fire-safety margin of the session space stays close to that of an ordinary room. Medical guidance is blunt about the alternative: stored oxygen poses a fire risk, cylinders must be secured upright, and oxygen itself makes fires burn faster. We cover chamber safety practices broadly in our safety overview.
None of this removes the ordinary rules. Oxygen equipment still demands respect: no oils or petroleum products near the oxygen path, no smoking anywhere near the system, sensible ventilation, and trained operation for commercial settings. The concentrator architecture removes the largest hazard categories; discipline handles the rest.
Maintenance and running costs
A concentrator-fed chamber is inexpensive to run and simple to keep. The recurring list is short: intake and concentrator filters every 3 to 6 months, periodic oxygen-sensor checks, and an eye on the unit’s hour counter so wear is measured, not guessed. Typical upkeep lands around $400 a year, and electricity around $2 per session. There are no gas contracts, no proprietary consumables, and no refill logistics to manage. The full schedule, including what owners handle versus what belongs to a technician, lives in our maintenance and service guide.
What to ask a manufacturer before you buy
Bring this list to any serious sales conversation:
- Is oxygen delivery concentrator-fed or tank-fed?
- What flow rate (LPM) does the system deliver per occupant, and what purity at that full flow?
- Is the concentrator rated for daily commercial duty, or is it a home-care unit repurposed?
- What is the delivery pressure relative to the chamber’s working pressure?
- What is the noise level, and where should the unit sit relative to the session room?
- Which filters and sensors are user-serviceable, and on what cadence?
- Is oxygen delivered by mask or BIBS, with the cabin pressurized by air?
A manufacturer with straight answers to all seven is selling a modern system. Hedging on flow, purity at full flow, or duty cycle tells you where the corners were cut. If you are equipping a home, our home chamber guide puts these answers in residential context.
Limitations and open questions
Concentrator-fed delivery has real dependencies worth naming. It needs electrical power: no power, no oxygen, though the chamber itself remains safe and simply reverts to air. It needs decent intake air: hot, humid, dusty, or oily room air shortens the life of the sieve beds, which is why placement and room ventilation matter. Output also declines gradually with altitude, heat, and wear, so a system without oxygen-concentration monitoring asks you to trust what you cannot see. That is precisely why modern consoles display measured oxygen concentration during the session, and why the buyer questions above exist: the difference between a well-engineered system and a weak one is measurable, and you should expect to see the measurement.
What this means for wellness operators
For an operator, the oxygen architecture is an operating-cost and uptime decision. Concentrator-fed delivery means no gas plumbing, no cylinder storage, no delivery contracts, and no per-session consumable cost beyond about $2 of electricity. Sessions can run back to back all day; the supply does not deplete. The workflow item that remains is mask hygiene between clients, a minutes-long protocol rather than a logistics chain. When you model a chamber as a service line, these are the numbers that decide whether the unit pays for itself, which is why oxygen delivery appears throughout the criteria operators evaluate and why we build every Superhuman chamber as an all-in-one system: concentrator and climate control included, no tanks, no plumbing. Contact us if you want the spec sheet walked through line by line.
Frequently asked questions
Do hyperbaric chambers use oxygen tanks? Modern wellness chambers do not. They use an oxygen concentrator that extracts oxygen from room air and feeds it to the occupant’s mask. Tank-fed designs persist mainly in older clinical installations with piped medical gas.
How pure is the oxygen from a concentrator? HBOT-grade systems deliver about 90 to 96% oxygen at full flow. The number to verify is purity at maximum flow rate, not the idle peak.
What flow rate do you need for a chamber session? Plan on 10 liters per minute or more per occupant. A single low-flow respiratory unit can under-dose a mask, especially against cabin pressure.
Is a concentrator safer than oxygen tanks? It removes the largest stored-oxygen hazards: there is no cylinder volume to leak and enrich a room’s atmosphere, nothing to transport or secure, and the cabin air is not oxygen-enriched when delivery is mask-based. Standard oxygen precautions still apply.
Do I need a prescription for a chamber’s oxygen concentrator? The concentrator integrated into a hyperbaric system is part of the chamber equipment, distinct from a personal respiratory concentrator prescribed for a diagnosed condition. Medical questions about whether HBOT suits you belong with your physician.
References
- MedlinePlus (U.S. National Library of Medicine). Oxygen Therapy: device types, oxygen tank safety, and hyperbaric oxygen therapy overview. https://medlineplus.gov/oxygentherapy.html
- Hardavella G, Karampinis I, Frille A, Sreter K, Rousalova I. Oxygen devices and delivery systems. Breathe (Sheff). 2019;15(3):e108-e116. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6876135/
- Inogen. Oxygen Tanks vs. Oxygen Concentrators: Key Differences: tank duration, refill logistics, and enriched-atmosphere fire risk. https://www.inogen.com/resources/oxygen-concentrators/oxygen-tanks-vs-oxygen-concentrators/
- U.S. Food and Drug Administration. Follow Instructions for Safe Use of Hyperbaric Oxygen Therapy Devices: Letter to Health Care Providers. https://www.fda.gov/medical-devices/letters-health-care-providers/follow-instructions-safe-use-hyperbaric-oxygen-therapy-devices-letter-health-care-providers