Glossy Black40″ 2.5 ATA Hard Shell Hyperbaric Oxygen Chamber
Our widest single-user lying chamber, engineered to hold a true 2.0, 2.2 or 2.5 ATA — up to the equivalent of a 50 ft dive — for the deepest tissue oxygen penetration available in a home-safe system. Built from 304-grade stainless steel and paired with a separate 95% oxygen generator, with a full 40-inch diameter to lie down and fully relax.
Select operating pressure
Every 40″ chamber is rated for multiple pressures — choose the maximum ATA you want unlocked.
- Max pressure
- 2.0 ATA (14.7 PSI)
- Diameter
- 40 inches
- Oxygen purity
- Up to 95%
- Grounding system
- Included
Optional Upgrades
SKU: OHSCHAMBER240 · These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
- Happy Users
- 10,000+
- Average Rating
- 4.9/5
- Global Certifications
- 5
- Industry Experience
- 10+ Years
Happy Users
Average Rating
Global Certifications
Industry Experience
Key features of the 40″ lying chamber
Every detail is engineered for safety, comfort and peak therapeutic performance — whether it lives in a busy practice or a dedicated home wellness room.
Military-Grade Construction
Built from premium 3.0mm 304-grade stainless steel, reinforced to hold up to 2.5 ATA and withstand thousands of daily pressurization cycles without degradation.
Widest Lying Interior
A full 40-inch diameter with a premium soft mattress and pillow lets users lie down completely flat and stretch out through 60–90 minute sessions.
Superior Oxygen Delivery
The separate oxygen generator reaches up to 95% oxygen purity at 20 LPM with no external tanks required, keeping operating costs to roughly 39¢ per hour even at higher pressures.
2.0, 2.2 or 2.5 ATA
Select your maximum pressure — 2.0, 2.2 or 2.5 ATA — then fine-tune from 1.3 ATA upward on interior and exterior controls. Safer and more cost-effective than tank-based systems.
Intuitive Controls
A digital display shows live pressure, temperature, humidity and oxygen percentage, with a programmable session timer up to two hours.
Whisper-Quiet Operation
Silent pressure-relief valves keep operating noise around 52 dB — well below the industry standard of 68 dB.
Choose the pressure that fits your protocol
The 40″ lying chamber is rated across the full therapeutic range. Unlock exactly the maximum pressure you need — you can always run any pressure at or below your selected ceiling.
2.0 ATA
14.7 PSI≈ 33 ft dive
The proven baseline
Best for: Everyday wellness, sleep, recovery and cognition
- Most-researched therapeutic pressure
- Gentle, comfortable sessions
- Included at no extra cost
2.2 ATA
17.6 PSI≈ 40 ft dive
The advanced step-up
Best for: Athletes and demanding recovery protocols
- More dissolved plasma oxygen
- Ideal for high-training loads
- Great balance of depth and comfort
2.5 ATA
22 PSI≈ 50 ft dive
Clinic-grade maximum
Best for: Practitioners running clinical protocols
- Maximum tissue oxygenation
- Matches many hospital protocols
- Full 1.3 – 2.5 ATA range
Customize your chamber with premium add-ons
Tailor the chamber to your practice with optional upgrades engineered for advanced, clinical-grade performance.
Lightweight High-Flow BIBS Oxygen Delivery System
The Built-In Breathing System (BIBS) delivers inhale-activated oxygen through a lightweight facemask, with exhalation expelled outside the chamber for advanced clinical-grade applications. It keeps ambient oxygen at a safe 21% while maximizing the concentration delivered directly to the user.
Includes a dedicated 20 LPM oxygen generator
The BIBS system ships with its own independent 20 liter-per-minute oxygen generator — separate from the chamber's standard supply — so the mask always has the dedicated high-flow output it needs.
Direct High-Flow Delivery
93–98% pure oxygen delivered straight to your breathing zone at a high flow rate.
Inhale Activated
True breathe-in-breathing-system technology eliminates oxygen overflow and waste.
CO2 Expeller
Exhaled carbon dioxide is expelled outside the chamber, acting as a built-in CO2 scrubber.
Switchable System
Easily switch between the BIBS mask and a standard cannula during hyperbaric sessions.
Air conditioning unit
- Enhanced hyperbaric climate control system for consistent cooling
- Adjustable water temperature range of 5°C to 30°C
- Precision touchscreen temperature control
- Interior radiator fan that removes humidity from the chamber
- Whisper-quiet operation for a relaxing session
- Portable glossy-white cabinet on locking casters
- Recessed side handles for easy repositioning
- High-flow perforated ventilation panels
Standard 20 LPM oxygen generator
Every 40″ chamber ships with our standard 20 LPM oxygen generator — a separate standalone unit that sits beside the chamber and connects via a single feed line. It runs on a standard 120V outlet, draws just 13 amps, and delivers a continuous 20 LPM of oxygen at 300 kPa — no external tanks required.
- Oil-free PSA generation — no external oxygen tanks
- Integrated flow meter and digital smart controller
- Plugs into any standard 120V household outlet
- Oxygen output
- 20 LPM continuous
- Output pressure
- 300 kPa
- Voltage
- 120V
- Current draw
- 13 amps
- Oxygen purity
- ≥ 95%
- Included
- Standard with every 40″ chamber
Why deeper pressure means deeper healing
Hyperbaric oxygen therapy drives oxygen up to 400% deeper into your tissues — and every additional atmosphere of pressure pushes it further. Selecting up to 2.5 ATA lets you match the most demanding recovery protocols. It's the same principle as the CO₂ dissolved in a sealed can of soda — under pressure the molecules shrink and dissolve into the liquid, then expand once released.
- Dive from 2.0 to 2.5 ATA
- Choose your depth: 2.0 ATA matches a 33 ft dive, while 2.5 ATA reaches the equivalent of a 50 ft dive — the widest therapeutic pressure range in a home-safe chamber.
- Oxygen into the plasma
- Under pressure, oxygen dissolves directly into blood plasma and shrinks enough to reach inflamed or hypoxic tissue that circulation alone can't serve. Higher pressure drives it deeper still.
- More cellular energy
- Oxygen is the final electron acceptor in the electron transport chain — more oxygen means more ATP to fuel repair, recovery and clarity.
Full technical specifications
Chamber
- Max pressure
- 2.5 ATA (2.0 / 2.2 / 2.5 selectable)
- Dimensions
- 88 in length · 40 in diameter
- Chamber weight
- 800 lbs
- Shell
- 3.0mm 304-grade stainless steel
- Window
- 12mm Bayer (Germany) polycarbonate
- Warranty
- 3 years materials & workmanship
Compressor & Smart Controller (Separate Unit)
- Configuration
- Dual Compressor System w/ integrated Smart Controller
- Air flow
- Redundant 70 LPM / 140 LPM total
- Progressive control
- One button pressure selection system 1.3 to 2.5 ATA
- Session timer
- Auto-controlled up to 2 hours
- Weight
- 190 lbs
- Power
- 1200 Watt
- Noise level
- ≈ 52 dB with silent relief valves
Oxygen Generator (Separate Unit)
- Configuration
- Standalone unit, connects via feed line
- Oxygen flow
- 20 LPM continuous @ 300 kPa
- Oxygen purity
- ≥ 95%
- Power
- 120V · 13 amps
- Unit size
- 176 lbs · 30″L × 18″W × 28″H
- Extras
- Oil-free · integrated dehumidifier · PSA sieve
System & Compliance
- Voltage
- 110–120V (220V on request)
- Certificates
- CE · ISO 9001 / 14001 / 13485 · ASME U Stamp
- Operating cost
- ≈ $0.39 / hour electricity
- Warranty
- 3 years materials & workmanship
Certifications & Standards
Built to the highest international manufacturing standards, ensuring safety, quality, and reliability you can trust.
ASME Compliant — U Stamp
The chamber is built to the ASME Boiler and Pressure Vessel Code and carries the ASME U Stamp, certifying that the pressure vessel is designed, fabricated, and inspected to recognized safety standards for pressurized equipment.
CE Marking
Declares that the chamber conforms to European Union health, safety, and environmental protection standards, allowing it to be sold and operated within the European Economic Area.
ISO 9001:2015
Certifies a quality management system focused on consistent processes, customer satisfaction, and continual improvement across manufacturing and service.
ISO 14001:2015
Certifies an environmental management system that controls environmental impact and promotes responsible, sustainable manufacturing practices.
ISO 13485
The globally recognized quality management standard for medical devices, ensuring rigorous design, production, and regulatory compliance for medical-grade equipment.
Everything you need, from day one
Equipment needs to work from the moment it arrives. That's why every 40″ chamber ships complete — no costly installation, no consumables beyond electricity, and no surprise add-ons to get running.
- Internal control panel for single-person operation from inside the unit
- Easy-slide large polycarbonate cabin door, pressure-activated with automatic release
- All-in-one machine: 10 L/min oxygen generator, dehumidifier & air compressor
- Digital display of interior pressure, temperature, humidity and oxygen percentage
- Interior and exterior pressure gauges
- Programmable digital session timer
- Communication interphone with attendant alerting
- Grounding mat for a static-free session
- Oxygen breathing headsets, nasal cannulas and facemasks for 95% oxygen
- Expansion port for secondary devices and future upgrades
- Negative-ION unit integrated as a base feature
- Dim interior reading light for relaxation
Protected at every layer
Unlike hospital chambers that rely on dangerous compressed-oxygen tanks, our system never raises the net oxygen level of your room — so no special venting or firewalls are required.
Gradual pressurization
Incremental control lets staff assess comfort during pressure changes.
Emergency alarm
Patients can alert staff instantly via the interior interphone.
Pressure relief valves
Interior and exterior emergency relief valves reduce pressure on demand.
Intercom system
Constant two-way communication between patient and attendant.
Interior door release
An internal emergency release and unique sliding door make exit simple.
Safe power-loss depressurization
The system depressurizes slowly and safely if power is ever lost.
Trusted by clinics and home users
“The 2.0 ATA depth made an immediate difference for our recovery protocols. Patients feel the roominess, and the all-in-one unit means we're not chasing oxygen tanks.”
“White-glove delivery was flawless. I power it up, climb in, and hit one button. The air conditioning upgrade is worth every penny for longer sessions.”
“Whisper quiet, beautifully built, and the selectable pressures let me tailor every session. Easily the best hard-shell chamber I've owned.”
Questions, answered
Each step raises the pressure inside the chamber, dissolving more oxygen directly into your blood plasma. 2.0 ATA (≈33 ft dive) is the most-researched wellness pressure, 2.2 ATA (≈40 ft) suits demanding athletic recovery, and 2.5 ATA (≈50 ft) matches many clinical protocols. You select the maximum ceiling — you can always run any lower pressure on the same unit.
No. Even at 2.5 ATA our system runs the chamber interior at roughly 40% oxygen, and the air that evacuates redistributes into the room at the same percentage it started with — or lower. The net room oxygen level is never increased, unlike hospital chambers that use compressed-oxygen tanks.
Under pressure, oxygen molecules shrink enough to squeeze through constricted blood vessels, inflamed tissue, the blood-brain barrier, lymph nodes and cerebrospinal fluid — dissolving directly into blood plasma to reach areas where circulation is diminished. Higher pressures such as 2.5 ATA push even more oxygen into solution.
Most sessions run 60–90 minutes. The digital timer can be programmed for automatic sessions up to two hours, and the dim interior light lets you read or relax throughout. The 40-inch lying diameter gives you room to fully stretch out.
There are no consumables beyond electricity — no oxygen tanks required. Running the chamber's compressors plus the separate oxygen generator costs roughly 39 cents per hour, even at 2.5 ATA.
Yes. We offer 6-month financing and business financing through our fast-approval partner, and we ship internationally with your local voltage and plug-type requirements.
Ready to bring 2.5 ATA therapy home?
Apply for 6-month financing or fast-approval business financing. Our team will walk you through configuration, shipping and white-glove delivery — just give us a call.
Speak with a specialist for a detailed quote including installation and shipping.