Chamber Comparison
Oxygen Ark 701vsSummit to Sea Grand Dive
Oxygen Ark
701
1.2
ATA
$6K
Starting
1yr
Warranty
Summit to Sea
Grand Dive
1.3
ATA
$14K
Starting
2yr
Warranty
The Bottom Line
The Oxygen Ark 701 wins on price, while the Summit to Sea Grand Dive takes the edge in max pressure, fda clearance, clinical credibility, warranty, and weight. If max pressure matters most, the Summit to Sea Grand Dive is the better choice.
Key Differences
Oxygen Ark
1.2 ATA
Summit to Sea
1.3 ATA
Higher pressure enables more clinical protocols. The Summit to Sea Grand Dive reaches 1.3 ATA, which covers most wellness applications.
Oxygen Ark
$6,000 - $9,000 (estimated)
Summit to Sea
$17,995
A significant price gap of ~57%. Consider whether the higher-priced unit's additional features justify the investment for your use case.
Oxygen Ark
Not FDA Cleared
Summit to Sea
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
2/10
Summit to Sea
4/10
This score reflects published studies, certifications, and clinical adoption. Higher scores indicate stronger evidence backing the manufacturer's claims.
Oxygen Ark
1 year
Summit to Sea
2 years
A longer warranty reduces long-term ownership risk, especially important for chambers in the $10K+ range.
Who Should Buy Which?
Best for
Summit to Sea Grand Dive
Families, clinics, multi-person use, spacious interior
View full details →Full Specification Comparison
| Specification | Oxygen Ark 701 | Summit to Sea Grand Dive |
|---|---|---|
| Chamber Type | Soft-Shell | Soft-Shell |
| Performance Tier | Advanced Wellness | Advanced Wellness |
| Max Pressure | 1.2 ATA | 1.3 ATA★ |
| Oxygen Delivery | ambient-air | ambient-air |
| O₂ Concentration | 88±3% (via O2 concentrators, 20 L/min delivery) | 21% (ambient); optional concentrator |
| Capacity | 6-person (multiplace) | 2-3 person |
| Weight | 353 lbs | 50 lbs★ |
| Interior Dimensions | 260cm length × 170cm width × 175cm height | 40in diameter |
| Portability | semi-portable | semi-portable |
| FDA Cleared | No | Yes (#K072757)★ |
| CE Marked | Yes★ | No |
| Made In | China | United States |
| Price | $6,000 - $9,000 (estimated)★ | $17,995 |
| Warranty | 1 year | 2 years★ |
| Clinical Score | 2/10 | 4/10★ |
| Brand Established | — | 2007 |
| Climate Control | No | No |
| Communication System | No | No |
| Emergency Features | — | Dual zipper safety system, pressure relief valve |
Oxygen Ark 701 — Standout Features
Summit to Sea Grand Dive — Standout Features
Interested in either chamber?
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