Chamber Comparison
Macy-Pan HP1501vsPerry Baromedical Sigma 34
Macy-Pan
HP1501
1.8
ATA
$27K
Starting
1yr
Warranty
Perry Baromedical
Sigma 34
3
ATA
$50K
Starting
1yr
Warranty
The Bottom Line
The Macy-Pan HP1501 wins on price and weight, while the Perry Baromedical Sigma 34 takes the edge in max pressure, fda clearance, and clinical credibility. If max pressure matters most, the Perry Baromedical Sigma 34 is the better choice.
Key Differences
Macy-Pan
1.8 ATA
Perry Baromedical
3 ATA
Higher pressure enables more clinical protocols. The Perry Baromedical Sigma 34 reaches 3 ATA, which supports FDA-approved treatment protocols.
Macy-Pan
$26,500 - $35,000
Perry Baromedical
$50,000 - $90,000
A significant price gap of ~47%. Consider whether the higher-priced unit's additional features justify the investment for your use case.
Macy-Pan
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.
Macy-Pan
4/10
Perry Baromedical
9/10
This score reflects published studies, certifications, and clinical adoption. Higher scores indicate stronger evidence backing the manufacturer's claims.
Macy-Pan
308 lbs
Perry Baromedical
2,200 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
Perry Baromedical Sigma 34
Hospitals, wound care centers, clinical HBOT programs
View full details →Full Specification Comparison
| Specification | Macy-Pan HP1501 | Perry Baromedical Sigma 34 |
|---|---|---|
| Chamber Type | Hard-Shell Monoplace | Hard-Shell Monoplace |
| Performance Tier | Clinical Grade | Clinical Grade |
| Max Pressure | 1.8 ATA | 3 ATA★ |
| Oxygen Delivery | 100%-medical-grade | 100%-medical-grade |
| O₂ Concentration | 95-100% via mask/hood | 100% via BIBS with Duke hoods |
| Capacity | 1-person | 1-person |
| Weight | 308 lbs★ | 2,200 lbs |
| Interior Dimensions | Available in 75/85/90/100cm diameter options | 33.5in diameter |
| Portability | fixed-installation | fixed-installation |
| FDA Cleared | No | Yes (#Multiple 510(k)s)★ |
| CE Marked | Yes | Yes |
| Made In | China | United States |
| Price | $26,500 - $35,000★ | $50,000 - $90,000 |
| Warranty | 1 year | 1 year |
| Clinical Score | 4/10 | 9/10★ |
| Brand Established | 2007 | 1956 |
| Climate Control | No | Yes★ |
| Communication System | Yes | Yes |
| Emergency Features | Emergency pressure release, intercom, safety interlocks | Emergency depressurization, fire suppression, BIBS system, multiple safety interlocks |
Macy-Pan HP1501 — Standout Features
Perry Baromedical Sigma 34 — Standout Features
Interested in either chamber?
Request quotes from both manufacturers and compare real pricing.
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