Hyperbaric chambers in California

NFPA 99 & fire code in California

California is one of the more actively reviewed states for hyperbaric installs. Fire marshals and building officials here regularly reference NFPA 99 — the National Fire Protection Association's standard for health care facilities — when they look at a chamber, and a formal plan-review step before you energize is common, especially around Los Angeles, San Diego, and San Francisco.

That posture is aimed primarily at oxygen-enriched, rigid medical chambers. The soft (Class C) chambers Metisine supplies are fabric, low-pressure (~1.3 ATA) general-wellness products rather than medical devices, so much of the conversation with your AHJ is documenting that distinction up front. Going in with a complete submittal — manufacturer specs, a ventilation/ambient-oxygen calculation, and an emergency procedure — is the difference between a smooth review and a stalled one.

Our current read on California: Active fire-marshal and OSHA interest; expect plan review. This is an operational risk band, not legal advice — your local AHJ always has the final say.

Working with your AHJ in California

The Authority Having Jurisdiction is whoever signs off on construction and life-safety in your area — usually the local fire marshal, building department, or both. In California that's set locally, so the office serving Los Angeles, San Diego, and San Francisco may run a different process than a neighboring county. Start by calling them and asking a simple question: "What do you require to install a fabric, low-pressure hyperbaric wellness chamber?"

Whatever the answer, three things make the review go faster: the manufacturer's specification sheet and UL/listing information for the chamber and its oxygen concentrator; a ventilation and ambient-oxygen calculation showing the room stays below the 23.5% oxygen threshold; and a short emergency procedure covering oxygen monitoring, fire-source control, and egress. Metisine's AHJ packet tool assembles all of this into a single submittal you can hand to your California reviewer.

Working with California's fire and building officials

California's Office of the State Fire Marshal sets the baseline, but the review that matters for your install is almost always local — the city or county fire department and building division where the chamber will live. In dense jurisdictions like Los Angeles, San Diego, and San Francisco, expect a plan-review step and questions about ventilation and electrical load.

Commercial and clinic installs add one more layer: Cal/OSHA's interest in workplace oxygen exposure. The same documentation that satisfies the fire marshal — an ambient-oxygen calculation showing the room stays under 23.5% — is what answers that question too. Metisine's AHJ packet bundles it so you submit once.

California hyperbaric FAQs