Understanding the Difference Between HBOT, MedHBOT, and mHBOT

MedHBOT vs mHBOT hyperbaric oxygen comparison”
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HBOT vs MedHBOT vs mHBOT — A Simple Comparison

Medium hyperbaric oxygen therapy (MedHBOT – notice the capital “M” and “ed”) has not yet been widely recognized as a medical treatment in many regulatory environments. However, there are significant similarities between MedHBOT and traditional Hyperbaric Oxygen Therapy (HBOT) that have led to confusion within the industry.

Historically, HBOT has defined the hyperbaric field, operating at higher pressures and using pure oxygen. Because of this, much of the industry conversation has focused almost exclusively on higher-pressure systems, often overlooking the benefits and possibilities that exist at lower pressure ranges and alternative oxygen delivery methods.

For a structured overview of how these hyperbaric environments are categorized, see the Solid O2 Hyperbaric Classification Framework.

For many years, HBOT has been defined as the administration of 100% oxygen while under pressure greater than atmospheric pressure (1 ATA). However, this definition has historically ignored the treatment space between 1 ATA and 2 ATA (and previously between 1 ATA and 3 ATA before COVID-era industry shifts).

There is a significant difference between 3 ATA and 2 ATA equipment, both in terms of:

safety considerations
equipment complexity
financial accessibility

Following the COVID period, many manufacturers began producing chambers operating around 2 ATA, which were significantly more affordable and accessible. As a result, many practitioners and researchers began acknowledging 2 ATA systems as legitimate HBOT treatments.

At the same time, a separate segment of the industry began developing what are known as Mild Hyperbaric Oxygen Therapy systems, commonly referred to as mHBOT (notice the small “m”).

These systems are typically constructed using TPU fabric chambers reinforced with cross-membrane materials. Early models operated around 1.3 ATA, with some manufacturers now pushing toward 1.5 ATA, sometimes using external structural supports to handle the strain placed on flexible materials.

To properly understand the distinctions in the industry today, it is useful to compare the three main categories side by side.

Treatment Comparison

The Hyperbaric landscape can be easier understood when the three main approaches are compared side-by-side:

Term	Pressure Range	Oxygen Delivery	Treatment Environment	Comments
HBOT – Hyperbaric Oxygen Therapy	≥2 ATA (historically ≥3 ATA)	100% pure oxygen via cylinders	Hospitals under doctor or trained nurse supervision	The chamber body is often fully pressurized with pure oxygen. No mask is required. Originally developed to treat decompression sickness in divers and later expanded to other medical uses.
mHBOT – mild Hyperbaric Oxygen Therapy	≤1.5 ATA	85–97% oxygen via concentrators	Homes, wellness centers, SMEs	Fabric chambers pressurized with ambient air compressors. Oxygen purity inside the chamber body is not monitored. The industry is largely unregulated.
MedHBOT – Medium Hyperbaric Oxygen Therapy	1.3 ATA – 2.2 ATA	85–97% oxygen via concentrators	Professional wellness or SME environments	Oxygen levels inside the chamber are monitored and kept below 60% while pressurization is achieved using filtered ambient air. Safety, servicing, and operational procedures are regulated internally.

HBOT – Hyperbaric Oxygen Therapy

HBOT is the origin of hyperbaric oxygen treatments. It is typically administered in hospital environments under the supervision of doctors or trained hyperbaric medical personnel.

These systems operate at pressures of 2 ATA and above and usually fill the entire chamber with 100% oxygen or other medical gas mixtures. Because the chamber environment itself contains the oxygen mixture, patients do not need to wear masks.

HBOT equipment and facilities are highly regulated due to the elevated risks associated with pure oxygen environments.

mHBOT – mild Hyperbaric Oxygen Therapy

mHBOT chambers are generally fabric-based systems designed for affordability and accessibility.

Typical characteristics include:

Pressures ≤1.5 ATA
Oxygen concentrators delivering 85–97% oxygen
Chamber pressurization using ambient air compressors
Oxygen concentration inside the chamber body not monitored

Because this industry is largely unregulated, individuals are able to purchase and operate these systems without professional training or safety oversight.

This lack of regulation introduces potential risks related to:

equipment servicing
oxygen purity variability
structural limitations of fabric chambers

If you would like a free, no obligation MedHBOT chamber quote (or if you want to chat to us), please click here to contact us.

MedHBOT – Medium Hyperbaric Oxygen Therapy

MedHBOT represents an emerging category within hyperbaric environments.

Key characteristics include:

Pressure range 1.3 ATA to 2.2 ATA
Oxygen delivered through 85–97% concentrators
Chamber oxygen levels monitored and maintained below 60%
Pressurization using clean, industrial-grade filtered air

Unlike HBOT, the chamber body is not filled with pure oxygen, which reduces several risks associated with oxygen toxicity and fire hazards.

Instead, oxygen is delivered primarily through the respiratory system using masks, recognizing that the primary absorption of oxygen occurs through the lungs.

MedHBOT focuses on higher operational standards and equipment servicing protocols, while avoiding unnecessary complexities associated with pure oxygen pressurized chambers.

Limitations and Risks

Like any therapeutic environment, hyperbaric systems carry potential risks depending on the pressure level and oxygen delivery method.

HBOT (≥2 ATA, pure oxygen)
• Higher pressures place greater strain on both the body and equipment
• Pure oxygen chambers increase risks of fire and oxygen toxicity
• Equipment and operational costs limit accessibility to specialized facilities

mHBOT (≤1.5 ATA)
• Lack of regulation means maintenance and safety standards can vary
• Fabric chambers near their structural limits may experience increased strain
• Oxygen purity within the chamber body is not monitored

MedHBOT (1.3–2.2 ATA)
• Not yet widely recognized as a formal medical device category in many regions
• Requires adherence to strict servicing and operational protocols
• Improper equipment maintenance can introduce safety risks

Why MedHBOT Is Often Considered a Balanced Approach

MedHBOT offers a middle ground within the hyperbaric environment spectrum.

It avoids:

the high risks associated with full-body pure oxygen pressurization in HBOT
the inconsistencies and lack of oversight commonly found in the mHBOT space

By incorporating:

monitored oxygen concentrations
industrial-grade air filtration
standardized servicing procedures

MedHBOT provides a more controlled, accessible, and safety-focused hyperbaric environment for SMEs, clinics, and professional wellness settings.

Conclusion

Understanding the differences between HBOT, MedHBOT, and mHBOT is essential for both professionals and consumers navigating the hyperbaric oxygen industry.

While HBOT remains the clinical foundation of hyperbaric treatments, the industry continues to evolve with new technologies and treatment models that operate at different pressure ranges and oxygen delivery methods.

Recognizing these distinctions allows for clearer communication, improved safety standards, and more informed decision-making across the hyperbaric ecosystem.