How Loud Is a Hyperbaric Chamber? Noise, Compressor and Patient Comfort

Where noise comes from

The pressurization compressor is the loud part. On cheap systems the compressor sits next to the cabin, so the patient hears 75–80 dB — like a busy vacuum. On the OZ-150 the compressor can be wall-mounted or placed in a utility closet, and the cabin itself is insulated. Patient-side noise stays under 65 dB, conversation level.

Why this matters

Patients spend 60–90 minutes inside. At 80 dB, a session feels like a chore. At 65 dB, they can read, listen to music or nap. The difference between a chamber patients rebook and one they avoid is often the noise level — more than the spec sheet.

What to ask suppliers

• What is the dB measured at the cabin, not at the compressor?
• Can the compressor be wall-mounted or remotely installed?
• Is the cabin itself sound-insulated?
• Can you hear a normal conversation through the door?

Suppliers who quote "60 dB" without saying where they measure are usually measuring the compressor in anechoic conditions. Ask for a real recording of a session in a clinic.