Chamber Comparison

HBOT4Life AlexandervsPerry Baromedical Sigma 36

HBOT4Life

Alexander

Clinical Grade

3

ATA

$89K

Starting

2yr

Warranty

Perry Baromedical

Sigma 36

Clinical GradeFDA Cleared

3

ATA

$55K

Starting

1yr

Warranty

The Bottom Line

The HBOT4Life Alexander wins on warranty, while the Perry Baromedical Sigma 36 takes the edge in price, fda clearance, and clinical credibility. If price matters most, the Perry Baromedical Sigma 36 is the better choice.

Key Differences

PricePerry Baromedical Sigma 36

HBOT4Life

$88,600 - $102,000

Perry Baromedical

$55,000 - $95,000

A significant price gap of ~38%. Consider whether the higher-priced unit's additional features justify the investment for your use case.

FDA ClearancePerry Baromedical Sigma 36

HBOT4Life

Not FDA Cleared

Perry Baromedical

FDA Cleared

FDA clearance matters if you need insurance reimbursement, plan to operate a clinical facility, or want the highest safety assurance. For home wellness use, it's less critical.

Clinical CredibilityPerry Baromedical Sigma 36

HBOT4Life

6/10

Perry Baromedical

9/10

This score reflects published studies, certifications, and clinical adoption. Higher scores indicate stronger evidence backing the manufacturer's claims.

WarrantyHBOT4Life Alexander

HBOT4Life

2 years

Perry Baromedical

1 year

A longer warranty reduces long-term ownership risk, especially important for chambers in the $10K+ range.

Who Should Buy Which?

Best for

HBOT4Life Alexander

Hospitals, advanced clinical programs, maximum pressure therapy

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Best for

Perry Baromedical Sigma 36

Hospitals, larger patients, reduced claustrophobia

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Full Specification Comparison

SpecificationHBOT4Life AlexanderPerry Baromedical Sigma 36
Chamber TypeHard-Shell MonoplaceHard-Shell Monoplace
Performance TierClinical GradeClinical Grade
Max Pressure3 ATA3 ATA
Oxygen Delivery100%-medical-grade100%-medical-grade
O₂ Concentration100% oxygen environment100% via BIBS with Duke hoods
Capacity1-person1-person
Weight2,500 lbs
Interior Dimensions36in diameter
Portabilityfixed-installationfixed-installation
FDA ClearedNoYes (#Multiple 510(k)s)
CE MarkedNoYes
Made InEuropeUnited States
Price$88,600 - $102,000$55,000 - $95,000
Warranty2 years1 year
Clinical Score6/109/10
Brand Established1956
Climate ControlNoYes
Communication SystemNoYes
Emergency FeaturesEmergency depressurization, fire suppression, BIBS system, multiple safety interlocks

HBOT4Life Alexander — Standout Features

3.0 ATA capabilityASME PVHO-1hospital-gradepremium build

Perry Baromedical Sigma 36 — Standout Features

36in diameter3.0 ATAincreased patient comfortBIBS/Duke hoods

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