Real hyperbaric vs. them.
Hyperbaric only works with real oxygen at real pressure. Most of what's sold for recovery has neither. Here's exactly where it falls apart.
1.5 to 2.4 ATA.
A rigid, certified pressure vessel. Pressure is what drives oxygen into blood plasma. Without it, the oxygen percentage is a marketing number.
About 1.3 ATA.
The Undersea and Hyperbaric Medical Society says anything under 1.4 ATA on air doesn't qualify as hyperbaric oxygen therapy. Not weaker. Not the thing.
92%+ oxygen, delivered at your lungs.
You breathe it directly through a sealed mask. Not a promise. A number we put in writing.
Air, lightly enriched.
Mild chambers are typically flushed with 24–28% oxygen. It is misleading to consider that level of oxygen hyperbaric.
Dedicated oxygen concentrators feeding a built-in breathing mask with CO2 removal.
The chamber is pressurized with air. The oxygen goes into you, not into the room around you. That's how you deliver high-concentration oxygen safely.
Air pumped in around you.
In our opinion, 30% oxygen does not qualify as hyperbaric oxygen therapy at all.
A sealed mask. Oxygen going in, your exhale going out.
BIBS stands for built-in breathing system. Oxygen flows into a mask that seals to your face, and your exhale leaves through its own line, carrying CO2 out of the chamber. The 92%+ we quote is measured at the mask. The last stop before your lungs.
A big number, measured at the machine.
A serious manufacturer would give you the amount of oxygen being delivered to the user inside the chamber. If someone is merely quoting the production of their machine in a normal room atmosphere, that does not give you information that you can actually use. Measuring at the machine means quoting what the oxygen concentrator puts out and sends to the chamber in a sea level environment, not with back pressure.
Others do not measure the oxygen delivered to the client inside the chamber. They do not measure this because they are not considering the back pressure on the oxygen concentrator, which will reduce its efficiency significantly. They are not delivering 92%+ oxygen to the user. Further, they are not delivering enough oxygen to be measured.
One question settles it: where was the oxygen percentage measured? At the machine, or at the inhale?
Ten breaths in their machine. Ten in ours.
A one minute game. Click, breathe, and watch where the oxygen actually goes.
Hardshell chambers that actually deliver to each person in the chamber.
1.5 to 2.4 ATA. 92%+ oxygen at a sealed mask. Certified as a medical device and tested above its maximum pressure. The look matches the numbers.
Good-looking chambers do not mean quality treatment.
Do not be confused by how pretty some machines are in the marketplace. Hyperbaric therapy does not rely on pretty. A quality company will make sure you are receiving 92%+ oxygen in your breath. It will not be a game of telling you how much a machine produces, or the hope that you cannot figure out that 30% oxygen is not optimal.
We are not knocking anyone. We are reading spec sheets out loud. Ask any seller for three things in writing: operating pressure, oxygen at the mask, and the vessel certificate.
ASME PVHO certified hard shell with the ASME U-Stamp.
Spell it out: ASME is the American Society of Mechanical Engineers, the body that sets America's pressure vessel standards. PVHO stands for Pressure Vessels for Human Occupancy. That means the chamber is certified not just to hold pressure, but to hold people. That is the certification that sets our chambers apart.
Every chamber is hydrostatically tested and inspected by an independent third party before it ships. In 2026 the factory became the first dedicated HBOT manufacturer fully certified under the EU's new Medical Device Regulation, and every unit is individually registered and traceable, factory to facility.
Ask them for the PVHO certificate.
If they do not have PVHO certification after their ASME certification, then they are only certified to make pressure vessels and not certified to put people in them.
Not every hard shell is equal either. Ask where the oxygen goes. Ask for the PVHO certificate.
Ours: we show you the conditions.
| Study | Who | Pressure | Oxygen | Finding |
|---|---|---|---|---|
| Hadanny et al., 2022 | 37 master athletes, double-blind randomized trial | 2.0 ATA | 100% | VO2max increased vs. placebo |
| Yagishita et al., 2019 | Pro and semi-pro rugby players, grade 2 MCL, non-randomized | 2.8 ATA | 100% | Less pain, faster return to play |
| Oyaizu et al., 2018 | Rats, muscle contusion | 2.5 ATA | 100% | Less inflammation, faster muscle regeneration |
| Our chamber | 1.5–2.4 ATA | 92%+ |
One of these studies ran at our pressure. Two ran higher. One was in rats. We're telling you because nobody else will.
Studies from real chambers, conditions left out.
Ask which pressure the study used. Then ask what their chamber runs at.
The numbers, in writing, before you spend a dollar.
Ask the company to document the percentage of oxygen received by each occupant of the chamber during treatment. Be sure that the person making your chamber is ASME PVHO certified, meaning they actually make chambers that they are certified to have people in.
Whatever closes the sale.
Ask them for the operating pressure and the oxygen percentage at the mask, in writing. Watch what happens. Be sure that your pricing includes delivery, installation, taxes, and any duties or tariffs due on the product. Be sure the distributor has visited your site and knows how to get the machine into your facility and make it safe to operate.
The physics doesn't negotiate.
Insist on accurate data.
When purchasing hyperbarics, it is important to remember there are people in the industry who want to sell you a hyperbaric, whether you can afford a quality system or not. Do not be misled. Try not to invest in things that do not work. There are many of them out there.
Real oxygen needs real containment.
High-concentration oxygen in a closed space is serious business. ASME, the American Society of Mechanical Engineers, knows it is a serious business, and therefore they have one certification for making gas cylinders and one for making chambers that people can occupy. That second one is PVHO: Pressure Vessels for Human Occupancy. If your manufacturer is not ASME PVHO certified, we would strongly recommend you do not occupy that chamber. That is not what it is made for.
Hyperbarics work only when done correctly.
Correctly also ensures safety.
No hype. Just the numbers.
Ask us the hard questions.
We will give you our numbers in writing, walk you through anyone else's, and tell you honestly what your space and your goals actually need.
(631) 528-4005