Chamber Comparison
Newtowne C4-40vsSummit to Sea Grand Dive Pro
Newtowne
C4-40
1.3
ATA
$9K
Starting
2yr
Warranty
Summit to Sea
Grand Dive Pro
1.3
ATA
$20K
Starting
2yr
Warranty
The Bottom Line
The Newtowne C4-40 wins on price and clinical credibility, while the Summit to Sea Grand Dive Pro takes the edge in weight. If price is your priority, the Newtowne C4-40 is the stronger pick.
Key Differences
Newtowne
$8,995 - $10,995
Summit to Sea
$12,995
A significant price gap of ~55%. Consider whether the higher-priced unit's additional features justify the investment for your use case.
Newtowne
5/10
Summit to Sea
4/10
This score reflects published studies, certifications, and clinical adoption. Higher scores indicate stronger evidence backing the manufacturer's claims.
Newtowne
125 lbs
Summit to Sea
55 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
Newtowne C4-40
Larger adults, parent+child, clinics, maximum comfort seekers
View full details →Best for
Summit to Sea Grand Dive Pro
Clinics, professional use, easier accessibility
View full details →Full Specification Comparison
| Specification | Newtowne C4-40 | Summit to Sea Grand Dive Pro |
|---|---|---|
| Chamber Type | Soft-Shell | Soft-Shell |
| Performance Tier | Advanced Wellness | Advanced Wellness |
| Max Pressure | 1.3 ATA | 1.3 ATA |
| Oxygen Delivery | ambient-air | ambient-air |
| O₂ Concentration | 21% (ambient) | 21% (ambient); optional concentrator |
| Capacity | 2-person | 2-person |
| Weight | 125 lbs | 55 lbs★ |
| Interior Dimensions | 40in diameter x 96in length | 40in diameter with platform |
| Portability | semi-portable | semi-portable |
| FDA Cleared | Yes (#K051759) | Yes (#K072757) |
| CE Marked | No | No |
| Made In | United States | United States |
| Price | $8,995 - $10,995★ | $12,995 |
| Warranty | 2 years | 2 years |
| Clinical Score | 5/10★ | 4/10 |
| Brand Established | 2001 | 2007 |
| Climate Control | No | No |
| Communication System | No | No |
| Emergency Features | Dual zipper safety, pressure relief valve, interior/exterior controls | Dual zipper safety system, pressure relief valve |
Newtowne C4-40 — Standout Features
Summit to Sea Grand Dive Pro — Standout Features
Interested in either chamber?
Request quotes from both manufacturers and compare real pricing.
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