Chamber Comparison
Oxygen Ark 901vsSechrist Industries Legacy Series (3200/3300HR/3600HR)
Oxygen Ark
901
1.5
ATA
$18K
Starting
1yr
Warranty
Sechrist Industries
Legacy Series (3200/3300HR/3600HR)
3
ATA
$30K
Starting
1yr
Warranty
The Bottom Line
The Oxygen Ark 901 wins on price and weight, while the Sechrist Industries Legacy Series (3200/3300HR/3600HR) takes the edge in max pressure, fda clearance, and clinical credibility. If max pressure matters most, the Sechrist Industries Legacy Series (3200/3300HR/3600HR) is the better choice.
Key Differences
Oxygen Ark
1.5 ATA
Sechrist Industries
3 ATA
Higher pressure enables more clinical protocols. The Sechrist Industries Legacy Series (3200/3300HR/3600HR) reaches 3 ATA, which supports FDA-approved treatment protocols.
Oxygen Ark
$18,000 - $28,000 (estimated)
Sechrist Industries
$30,000 - $60,000 (refurbished)
A significant price gap of ~40%. Consider whether the higher-priced unit's additional features justify the investment for your use case.
Oxygen Ark
Not FDA Cleared
Sechrist Industries
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.
Oxygen Ark
3/10
Sechrist Industries
9/10
This score reflects published studies, certifications, and clinical adoption. Higher scores indicate stronger evidence backing the manufacturer's claims.
Oxygen Ark
187 lbs
Sechrist Industries
2,360 lbs
Weight matters for portability and installation. Lighter chambers are easier to move between rooms or take to a second location.
Who Should Buy Which?
Best for
Sechrist Industries Legacy Series (3200/3300HR/3600HR)
Budget-conscious clinics, refurbished market buyers, proven reliability
View full details →Full Specification Comparison
| Specification | Oxygen Ark 901 | Sechrist Industries Legacy Series (3200/3300HR/3600HR) |
|---|---|---|
| Chamber Type | Hard-Shell Monoplace | Hard-Shell Monoplace |
| Performance Tier | Clinical Grade | Clinical Grade |
| Max Pressure | 1.5 ATA | 3 ATA★ |
| Oxygen Delivery | mask/cannula | 100%-medical-grade |
| O₂ Concentration | Up to 95% | 100% oxygen environment (entire chamber pressurized with O2) |
| Capacity | 1-person | 1-person |
| Weight | 187 lbs★ | 2,360 lbs |
| Interior Dimensions | — | Various (33-36in diameter) |
| Portability | fixed-installation | fixed-installation |
| FDA Cleared | No | Yes (#K140559)★ |
| CE Marked | Yes | Yes |
| Made In | China | United States |
| Price | $18,000 - $28,000 (estimated)★ | $30,000 - $60,000 (refurbished) |
| Warranty | 1 year | 1 year |
| Clinical Score | 3/10 | 9/10★ |
| Brand Established | — | 1973 |
| Climate Control | No | Yes★ |
| Communication System | No | Yes★ |
| Emergency Features | — | Emergency vent system, fire suppression, safety interlocks |
Oxygen Ark 901 — Standout Features
Sechrist Industries Legacy Series (3200/3300HR/3600HR) — Standout Features
Interested in either chamber?
Request quotes from both manufacturers and compare real pricing.
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