Buying Guide

What to look for in a hyperbaric chamber

A hyperbaric chamber can cost anywhere from around £3,000 to over £200,000. That gap isn't markup - it's three different categories of product, with different build quality and very different outcomes for your body.

Three different products sharing one name

They share a name and very little else. What separates them is whether they can safely reach the oxygen dose the published research actually uses.

Soft-shell / mild HBOT

Inflatable bag

From $5k / £3k

1.3 - 1.4 ATA

Sits below the pressure the published research uses, so it cannot reproduce the clinical protocols.

Uncertified hard-shell

Hard shell, unverified

From $20k / £15k

1.5 - 2.0 ATA claimed

Often far-east built to varying quality, lacking certification and independent inspection. Claimed certifications should be scrutinised, and the basic oxygen delivery cannot replicate the study results.

The real product

Medical grade, certified

From $75k / £60k

up to 2.4 ATA (3.0 on the Matrix)

Hard-shell, fully certified, independently inspected, with a Built-In Breathing System. The only category built to the specification the research uses.

Why it matters which chamber you choose

What decides how much oxygen reaches you

Hyperbaric therapy works by forcing extra oxygen into your blood. Two chambers can carry the same word on the label and deliver completely different amounts of it.

Two things set how much oxygen gets in: how hard the chamber pressurises, and how much of what you breathe is actually oxygen. A soft-shell cannot reach the pressure. A standard mask leaks chamber air around the seal and roughly halves the oxygen. Only a hard-shell at full pressure with a built-in breathing system reaches the dose the research uses - around fifteen times the dissolved oxygen of normal breathing.

What a high dose of oxygen buys you

Why the dose is the thing to check

These effects were documented at that dose, in controlled trials. A chamber that delivers a fraction of it is not the chamber those trials used.

Stamina & performance

What the trial did

In a blinded, placebo-controlled trial, trained middle-aged athletes completed 40 sessions at 2.0 ATA. The group using HBOT showed gains in VO₂ max and anaerobic threshold against the placebo group, with increased mitochondrial respiration and mass measured from muscle biopsy. In plain terms, the same effort sat further below the athlete's limit.

Hadanny and Efrati et al. (2022), Sports Medicine - Open. 40 sessions at 2.0 ATA, trained master athletes.

Illustration of mitochondria, the cell's power plants

Down to the cell

Where the stamina came from

In the same trial, those gains came with more of the cell's own power plants - the mitochondria - measurably increased and working harder. Where that reaches beyond stamina is being actively studied.

Hadanny et al. (2022), Sports Medicine - Open. 40 sessions at 2.0 ATA, healthy athletes.

Measured in healthy people, at the 2.0 ATA dose these chambers reach.

The four things that all have to be present

All four of these have to be present to match the oxygen dose the research uses - the dose behind the performance and the repair response.

A hard shell that reaches 2.0 - 2.4 ATA

Soft-shells top out near 1.3 ATA - below the pressure the studies use.

A built-in breathing system rather than a loose mask

A loose mask leaks chamber air around the seal and delivers roughly 40% oxygen. A built-in system delivers close to 100%.

A clinical oxygen supply that keeps pace

Enough flow to feed the breathing system at pressure, not run short mid-session.

Structured, automated air breaks

The controlled rise-and-fall in oxygen that regulates the oxygen in the tissue and potentially strengthens the cellular response - delivered by the system, not timed by hand.

The session profile on the chamber controller - the climb, the plateau, and the automated air breaks.

Critical features

The safety points worth asking about

A chamber is a pressure vessel you sit inside breathing oxygen. Done properly, the safety is engineered in and invisible. Key points to check:

You can release it yourself, no power needed

Mechanical emergency stops, and a 90-second emergency depressurisation that needs no electrical power.

Oxygen monitored automatically

Continuous monitoring of the chamber environment, managed by the system, not by you.

Medical-grade materials and oxygen handling

Breathing air filtered; exhaled oxygen scavenged out by the breathing system so it cannot build up. Windows in acrylic, as used in aviation.

Safety certifications

The certifications worth asking for

These aren't paperwork. Each one is critical, and each confirms a specific safety requirement worth looking for on any chamber.

Independently inspected

Every unit inspected and pressure-tested before it leaves the factory - by a classification body that normally certifies submarines and nuclear plants.

PED

Structural integrity of the pressure vessel - hull, welds, viewports - at operating pressure.

NFPA 99

The oxygen delivery and scavenging safety standard.

ASME PVHO

The standard written specifically for pressure vessels with people inside.

CE marked

Conformity assessed against the applicable requirements - not self-declared.

ISO 13485

Audited manufacturing quality - every chamber built to the same documented process.

See the certifications

Comfort & design

Why comfort decides whether you finish the course

A session runs 60 to 90 minutes, and the protocols are built around completing the course, not a single visit. Comfort is what gets a person through it.

Good visibility. Large windows with clear sightlines throughout - the Zeugma is the benchmark for this.
Seated and upright. Sitting rather than lying in a tube lets you look out, use the entertainment system and share the session in multiplace models.
Heat and moisture controlled. Temperature and humidity held comfortable across a full session.
A reclining seat. Comfortable enough to settle into for the full sixty to ninety minutes.

And it has to belong in the room. A chamber for a home, wellness space or club isn't hospital equipment parked in a corner. Exterior finish, interior materials, lighting and upholstery are all customisable to the space - so it reads as part of the room, not an intrusion into it.

A comfortable, well-finished hyperbaric chamber

Ask us the question you are stuck on

Whether that is which pressure you actually need, why one of these chambers rather than something cheaper, what it costs to run, or what the installation involves. Ask it. If you already know what you want, tell us the space and where you are and we will price it.

We handle specification, installation and support, from the first conversation through to handover.

Speak to David

Speak to our founder David Gumbleton and the team. · +44 779 977 2383

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