st901 faq

The ST901 is Macy-Pan's largest soft-shell lying chamber, 88 in x 35 in x 35 in at 1.3 to 1.5 ATA. It fits families who want a parent-plus-child configuration, larger or taller adults who find 32 inch chambers too tight, and home users running long recovery protocols. The 35 inch diameter gives meaningful extra room compared to the ST801's 32 inch.

No. At 35 inch diameter, the ST901 fits one adult plus one child comfortably, or a single adult with full reclining room. Two adults side by side requires a larger chamber. If that is your use case, look at the 40 inch hard-shell HP1501-100, the only Macy-Pan chamber wide enough for two adults.

At 1.3 ATA you are breathing oxygen at roughly 30% greater pressure than sea level, appropriate for sleep, general wellness, and mild recovery. At 1.5 ATA the pressure delivers more dissolved oxygen per session for deeper tissue saturation, suited to athletic recovery and inflammation protocols. Most users start at 1.3 ATA and step up to 1.5 ATA as they acclimate. Pressure tier is selected at checkout.

No. The ST901 is CE-certified, ISO 13485-compliant, ISO 9001-compliant, and SGS-tested, but it is not FDA-cleared for medical use in the United States. It is sold for wellness, research, and recovery use. If you require FDA-cleared equipment for clinical documentation or insurance reimbursement, consider the Newtowne C4-40, the largest FDA-cleared soft-shell alternative. Consult your physician before starting any HBOT protocol.

Both adjust from 1.3 to 1.5 ATA and both are soft-shell Macy-Pan chambers, so choose on size. Pick the ST901 if room matters most: extra interior space, a parent-plus-child configuration, or you are a larger or taller adult. Pick the ST801 if footprint matters most: it is narrower at 32 inches and lighter, better for tight spaces.

HBOT for children should only be done under physician supervision. The ST901's 35 inch diameter allows a parent and child to session together, which many families use for age-appropriate wellness protocols. Ear equalization is a key concern. Children need to be old enough to understand and perform the Valsalva maneuver. Consult a pediatrician before starting any HBOT protocol for a minor.

Most protocols run 60 to 90 minutes, 3 to 5 times per week. Beginners typically start at 45 minutes at 1.3 ATA for the first 2 weeks before lengthening sessions or moving to 1.5 ATA. Your physician should guide protocol design based on your goals.

Yes. The chamber is designed for self-operation. Setup takes 30 to 45 minutes the first time and 10 to 15 minutes after. Dual internal and external pressure gauges let you monitor sessions solo. Most home users are running sessions without an attendant within the first week.

You will hear steady airflow and feel gradual ear pressure during pressurization, similar to an aircraft takeoff. Some users feel slight fatigue or lightheadedness for 10 to 15 minutes after their first few sessions. This typically resolves as the body adapts over the first 2 weeks of use.

Less than in smaller chambers. The 35 inch diameter and multiple transparent windows bring in natural light and reduce the confined feeling that drives most soft-shell dropout. First-time users typically acclimate within 2 to 3 sessions. If severe claustrophobia is a known issue, request a video walkthrough before buying.

You need a minimum 100 in x 40 in footprint for the chamber plus 24 in clearance on the entry side. The operating unit adds another 30 in x 18 in footprint and should sit within 6 feet. Power is 110 to 120V, 60Hz, 15A dedicated circuit. The chamber runs quietly enough (50 dB or lower) to use in a home office or shared room.

No. Primary maintenance is replacing the air filter every 6 to 12 months depending on usage. Step-by-step video guides and PDF manuals are linked in the specifications section. Component lifespan: chamber structure 8,000+ hours, compressor 10,000+ hours, oxygen concentrator 5,000+ hours. Detailed service guidance lives in the Shipping & Warranty tab.