How Does mHBOT Work? Understanding the Technology Behind Mild Hyperbaric Chambers
Two principles explain the technology: Henry's Law and oxygen diffusion. This guide covers the science in plain terms, shows where mild hyperbaric chambers differ from clinical HBOT, and states clearly what the evidence does and does not show. HEAOCEAN standard chambers run at 1.3 ATA, with 1.5 ATA available as a custom build.
At a glance
Henry's Law: Pressure and Oxygen Availability
Henry's Law is a basic principle of chemistry. At a constant temperature, the amount of gas that dissolves into a liquid is proportional to the pressure of that gas above the liquid. Higher pressure lets more gas molecules dissolve into a liquid, including blood plasma. Carbonated drinks work the same way: pressure changes how much gas the liquid can hold.
In a mild hyperbaric environment, the modest pressure increase above normal atmospheric pressure (1.0 ATA) allows a small additional amount of oxygen to dissolve into plasma. HEAOCEAN standard chambers operate at 1.3 ATA, and 1.5 ATA is available as a custom configuration.
The effect scales with pressure. Clinical hyperbaric oxygen therapy uses 2.0–3.0 ATA with near-100% medical-grade oxygen. It produces a much larger change in dissolved plasma oxygen than a mild chamber does. Do not assume the two have comparable physiological effects.
Oxygen Diffusion: How Oxygen Moves Through the Body
Oxygen moves through the body by diffusion, from areas of higher concentration toward areas of lower concentration. Most of it is carried by hemoglobin in red blood cells, and a smaller amount is dissolved directly in plasma.
A mild hyperbaric environment can modestly raise the amount of oxygen dissolved in plasma. Researchers continue to study how this interacts with normal diffusion. At mild pressures the effect is small compared with clinical hyperbaric settings.
The Cellular Response: How the Body Uses Oxygen
Cells use oxygen inside mitochondria to produce ATP (adenosine triphosphate), the molecule that powers everyday biological functions. This is well-established physiology and applies with or without hyperbaric exposure.
Research continues on how mildly elevated-pressure oxygen environments may interact with the body's natural processes. The current state of evidence looks like this:
Cellular energy
Oxygen is required for normal ATP production. Whether mild hyperbaric exposure meaningfully changes this in healthy people is an active research question, not an established conclusion.
Wellness routines
Some users add mild hyperbaric sessions to relaxation and recovery routines, much as people use saunas or massage. It is a personal wellness habit, not a clinically validated treatment.
Ongoing research
Small studies on circulation and general wellness markers continue. Hyperbaric medicine associations note that evidence for mild use (below 2.0 ATA) is limited compared with clinical HBOT.
Important: HEAOCEAN mild hyperbaric chambers are wellness products and are not medical devices. They are not intended to diagnose, treat, cure, or prevent any disease, and no specific health outcome is guaranteed. If you have a medical condition, consult a qualified healthcare professional.
1.3 ATA Standard, 1.5 ATA Custom
Pressure is only one part of the system. Compare the full configuration: pressure, oxygen concentrator output, flow rate, chamber size, and after-sales support.
Standard: 1.3 ATA
HEAOCEAN standard soft-shell models (Sitting HS050, Sit-and-Lie HC050, Lying HL050) run at about 1.3 ATA (30 kPa).
Custom: 1.5 ATA
1.5 ATA is a built-to-order configuration. Request it at the quotation stage; it is confirmed in writing before production.
Not a user setting. A standard unit should not be assumed to switch to 1.5 ATA after delivery. Operate each chamber only within its documented specifications, and do not modify its pressure-control or safety components.
Mild vs Clinical Hyperbaric: Side by Side
The word “hyperbaric” covers a wide range of pressures and equipment. This table compares mild wellness chambers like HEAOCEAN's with clinical hyperbaric oxygen therapy delivered in hospitals or specialty clinics.
| Feature | Mild hyperbaric chamber (HEAOCEAN) | Clinical HBOT |
|---|---|---|
| Pressure | 1.3 ATA standard; 1.5 ATA custom build | 2.0–3.0 ATA |
| Oxygen supply | Oxygen-enriched air from a concentrator (5 L/min, 93% ± 3% output on soft-shell models). This is the concentrator output, not the concentration inside the chamber. | Near-100% medical-grade oxygen |
| Chamber type | Soft-sided, zippered, portable | Hard-sided (acrylic or steel), fixed installation |
| Regulatory status | Supplied as a wellness product, not a medical device. Requirements vary by country, so check your market. | Regulated medical device (in the US, FDA Class II, product code CBF) |
| Typical setting | Home, wellness studio, spa, gym | Hospital or licensed hyperbaric clinic, under supervision |
| Session length | Follow the manual for your model | Set by the treating clinician |
| Medical indications | None. Marketed for general wellness only. | Specific cleared indications (e.g. carbon monoxide poisoning, decompression sickness, non-healing diabetic wounds) |
| Evidence base | Limited; associations note insufficient evidence for health claims below 2.0 ATA | Substantial peer-reviewed evidence for its cleared indications |
Sources: FDA 510(k) product code CBF classification database; comparative clinical literature on mild vs traditional HBOT.
Frequently Asked Questions
What pressure do HEAOCEAN mild hyperbaric chambers use?
Standard soft-shell models run at about 1.3 ATA. 1.5 ATA is a built-to-order custom configuration, confirmed in writing before production. Clinical hyperbaric oxygen therapy typically uses 2.0–3.0 ATA.
Is a mild hyperbaric chamber the same as clinical HBOT?
No. Clinical HBOT is a medical treatment with specific oxygen-delivery, supervision, and safety requirements. HEAOCEAN's mild wellness chambers should not be described as an equivalent treatment or used as a replacement for prescribed care.
Can I switch a standard 1.3 ATA chamber to 1.5 ATA?
Do not assume that 1.5 ATA is a selectable setting on a standard unit. It is a separate custom-order requirement. Follow the supplied unit's operating limits and contact HEAOCEAN before considering any configuration change.
Is there scientific evidence that mild hyperbaric chambers work?
Evidence for mild hyperbaric exposure (below 2.0 ATA) is more limited than for clinical HBOT. Some hyperbaric medicine associations state there is little rigorous evidence for health claims about mild or soft chambers. HEAOCEAN does not claim specific health or medical outcomes.
Do mild hyperbaric chambers use pure oxygen?
No. They use room air or air enriched by an oxygen concentrator, not near-100% medical-grade oxygen. Oxygen-enriched environments still call for care, so follow the manual's rules on prohibited items, ventilation, and placement.
Do I need a prescription or medical supervision?
Do not assume that a wellness description removes prescription, supervision, or facility requirements. Confirm the rules applicable to your destination and specific equipment. Consult a qualified healthcare professional about personal suitability, and follow the manufacturer's instructions for training, monitoring, and safe operation.
What does ISO 13485 certification mean?
HEAOCEAN states that its factory operates under an ISO 13485:2016-certified quality management system. This certification applies to the management system; it does not, by itself, establish product approval or authorization for a particular medical use or market. Request the documentation relevant to your model and destination.
How long should a session last?
Follow the operating parameters in the manual supplied with your specific chamber. Do not use a general article or another model's instructions to set session duration, pressure, or oxygen-delivery settings.
Choosing a Mild Hyperbaric Chamber
HEAOCEAN offers sitting, lying, and sit-and-lie soft-shell chambers, as well as a two-seat hard-shell model. Compare posture, user capacity, room access, equipment placement, electrical supply, maintenance, and the confirmed pressure configuration before choosing.
For the standard soft-shell range, use 1.3 ATA as the standard specification and request 1.5 ATA as a custom option. Hard-shell specifications should be checked separately rather than assumed to match the soft-shell range.
Sitting HS050
1600 × 650 × 1200 mm. Smallest space requirement.
Sit-and-Lie HC050
2000 × 650 × 1200 mm. Seated or lying use.
Lying HL050
Ø 750 × L 2000 mm (M) or Ø 800 × L 2250 mm (L). Full-length lying.
Find the Right Chamber for Your Space
Tell us your available space, intended setting, destination market, and preferred configuration (1.3 ATA standard or 1.5 ATA custom). We will confirm the model in a written quotation.
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