1.5 ATA vs. 2.0 ATA Hyperbaric Pressure
1.5 ATA and 2.0 ATA are two chamber pressure settings, with 2.0 ATA representing greater absolute pressure. This factual comparison covers pressure, timing, vessel requirements, and equipment ratings without assigning wellness outcomes to either setting.
1.5 ATA vs. 2.0 ATA
- Pressure above sea level: 1.5 ATA: 0.5 ATA above 1.0 — 2.0 ATA: 1.0 ATA above 1.0
- Approximate gauge pressure: 1.5 ATA: About 7.4 psi above ambient — 2.0 ATA: About 14.7 psi above ambient
- Relative pressure: 1.5 ATA: Lower of the two settings — 2.0 ATA: Higher of the two settings
- Equalization: 1.5 ATA: Required during pressure changes — 2.0 ATA: Required during pressure changes
- Chamber requirement: 1.5 ATA: Achievable on OxyEdge hard-shell — 2.0 ATA: Requires rigid hard-shell construction
- Session pacing: 1.5 ATA: Shorter pressurization time — 2.0 ATA: Longer pressurization and descent
- OxyEdge availability: 1.5 ATA: Adjustable on OxyEdge chambers — 2.0 ATA: Maximum on OxyEdge chambers
- Selection basis: 1.5 ATA: Equipment instructions and facility procedure — 2.0 ATA: Equipment instructions and facility procedure
Which is right for you?
- Home setting: Compare rated pressure, controls, room requirements, training, and operating instructions.
- Wellness center: Select a rated range that matches documented facility procedures and operator training.
- Spa: Compare model specifications and use only settings covered by operating instructions.
- Athletic facility: Base equipment selection on specifications, throughput, room planning, and operator procedures.
What is the difference between 1.5 ATA and 2.0 ATA?
1.5 ATA is 0.5 atmospheres above sea level, while 2.0 ATA is a full atmosphere above sea level, doubling the ambient pressure.
At 2.0 ATA the vessel contains greater total pressure than at 1.5 ATA, so the equipment must be rated for that setting.
Why does 2.0 ATA require a hard-shell chamber?
Reaching 2.0 ATA requires a rigid pressure vessel engineered to contain the higher pressure safely. OxyEdge hard-shell chambers are built for this range.
Soft-shell chambers generally cannot reach 2.0 ATA, which is one reason OxyEdge manufactures only hard-shell chambers.
How do pressurization and comfort compare?
A 2.0 ATA session generally involves a larger pressure change than 1.5 ATA. Occupants must be able to equalize as pressure changes.
OxyEdge controls manage pressurization and depressurization; operators must follow the model instructions and facility procedures.
Frequently Asked Questions
What does the 2.0 ATA specification mean?
2.0 ATA is the listed maximum operating pressure on applicable OxyEdge models. Operators must stay within the model rating and follow its instructions.
Can I switch between 1.5 and 2.0 ATA?
Yes. OxyEdge chambers are adjustable, so operators can set sessions anywhere up to 2.0 ATA on the same unit.
Do I need a special chamber for 2.0 ATA?
Yes. Reaching 2.0 ATA requires a rigid hard-shell chamber engineered for that pressure, which is what OxyEdge manufactures.