Basics · 3 min read
HBOT vs normobaric oxygen therapy
The difference between hyperbaric oxygen therapy (under pressure) and normobaric oxygen (at normal pressure), why pressure matters, and what each setup needs.
A common question from people new to oxygen is whether they need a chamber at all, or whether breathing oxygen from a concentrator is enough. The answer comes down to pressure — the difference between normobaric and hyperbaric oxygen.
Normobaric oxygen
Normobaric oxygen means breathing extra oxygen at normal atmospheric pressure — 1 ATA. That is what happens when you use an oxygen concentrator and mask without a chamber: the oxygen concentration goes up, but the pressure stays at sea level.
Hyperbaric oxygen
Hyperbaric therapy adds pressure to the equation. You breathe concentrated oxygen inside a sealed chamber held at 1.3–2.0 ATA. The combination of higher pressure and concentrated oxygen lets the body dissolve more oxygen into the bloodstream than concentrated oxygen alone can at normal pressure. For the fundamentals, see what is HBOT and ATA pressure explained.
Side by side
| Normobaric oxygen | Hyperbaric (HBOT) | |
|---|---|---|
| Pressure | Normal (1 ATA) | Raised (1.3 – 2.0 ATA) |
| Equipment | Concentrator + mask | Chamber + oxygen unit |
| Oxygen uptake | Increased | Further increased by pressure |
Why the chamber matters
The pressurized chamber is what makes therapy hyperbaric. It is also why a complete hyperbaric system pairs a chamber with an oxygen concentrator rather than using a concentrator on its own. CONSIDER soft chambers include the all-in-one machine that handles both pressurization and oxygen.
What you need for hyperbaric therapy
A real hyperbaric setup needs a pressurized chamber plus an oxygen supply. For home use, a soft chamber like the COSL15 or COSE15 is complete out of the box; for clinics, a hard-shell COHT20 integrates everything. Choosing your first chamber? Start with the buyer's guide.
Have a question about your project?
Our team can recommend the right chamber for your market, space and pressure.
