This is one of the questions we hear most. At 1.3 ATA (atmospheres absolute), mHBOT is considered safe for most people when used as directed. Because 1.3 ATA is a lower pressure than traditional high-pressure hyperbaric chambers, there is a lower risk of oxygen toxicity and of the ear discomfort that can come with deeper pressure, though individual experiences vary. O2 Box chambers are designed with comfort and safety in mind. As with any wellness routine, we recommend checking with your healthcare provider before you begin, especially if you have a medical condition, are pregnant, or take medications. See "Who should avoid using the chamber?" below for more.

Experiences vary from person to person. Some people notice a difference after their first session, while others need several sessions, and some may not notice a change at all. We can't promise specific results, and your experience may differ from someone else's.

The chamber is gently pressurized with ambient air, and an oxygen concentrator works alongside the pressure pump to raise the oxygen concentration inside. Your installer can walk you through how the system works.

O2 Box sessions are one hour, and we strongly recommend one-hour sessions to get the most out of your experience. Follow the session guidance in your owner’s manual, and ask your healthcare provider if you are unsure what is right for you.

Overall, the O2 Box is quite quiet. Any sound it produces is low, steady, and ambient, without sudden ups and downs in volume, so it tends to fade into the background. Some of our clients place their O2 Box in a room right behind the front desk or in a suite next to other businesses in a multi-business building. Sound can vary by model and placement, and we’re happy to talk through placement options with you.

Your O2 Box ships unassembled so it can fit through standard doorways. A certified installer will assemble your chamber and walk you through setup and use, so you feel confident from your first session.

Routine care is simple. The filter on the pressure pump should be removed and rinsed with water (no soap) every 4 to 6 months. Please refer to your owner's manual for complete care instructions.

Results vary from person to person. Some people notice a difference right away, while others don’t notice one until after several sessions, and some may not notice a change at all. Some people also feel mild ear or sinus pressure as the chamber pressurizes, much like on an airplane, and swallowing or yawning often helps. If you have questions about whether the O2 Box could be right for you, we recommend consulting your healthcare provider.

The O2 Box was built for people who want a premium, simple, long-lasting experience: - 26 years of Japanese engineering and innovation

- A premium hard-shell room design, not a traditional chamber or tube

- Built for simplicity, reliability, and long-term ownership

- A comfortable, spacious experience

- Easy installation into commercial and residential environments

- Premium quality backed by education, support, and real-world experience

O2 Box chambers operate at up to 1.3 ATA (atmospheres absolute). That is about 4.4 psi above normal sea-level air pressure, or roughly the pressure you would feel about 10 feet underwater.

The exterior of the O2 Box is made of steel panels, which gives it a rigid hard shell that holds up to pressurization session after session. Soft-shell chambers are made of fabric that has to expand and contract every time they pressurize, which causes wear over time. In 26 years, O2 Box has never had a chamber fail. For details on materials, specifications, and warranty coverage, please contact us.

Ear pressure can happen as the chamber pressurizes. Swallowing, yawning, or gently moving your jaw can help, and our chambers include an ear pressure release button you can use during your session. If discomfort continues, end your session and check with your healthcare provider.

We recommend not using the chamber if you have severe congestion, since it can make ear and sinus pressure more noticeable. If you have a mild cold or a sinus infection, check with your healthcare provider first.

Please do not use the O2 Box if you are pregnant. People who use insulin for diabetes, have a pacemaker, or have congestion should also avoid using the chamber. This list is not complete, so please read your owner’s manual and talk with your healthcare provider before use if you have any medical condition or take any medication.

Wear comfortable clothing, avoid heavy meals right before your session, and stay hydrated. Follow any additional instructions from your installer or provider.

Please talk with a healthcare provider before a child or an older adult with specific health concerns uses the chamber. Children should only use the chamber with adult supervision. Refer to your owner's manual for any age guidance.