ColdCraft Guides
Soft vs Hard Hyperbaric Chamber
Compare soft-shell and hard-shell hyperbaric chambers by construction, room fit, entry, pressure range, delivery, and purchase requirements.

Soft-shell and hard-shell hyperbaric chambers are different equipment categories. A soft-shell chamber uses flexible pressure-rated material, an external frame or support system, and a zipper entry. A hard-shell chamber is a rigid capsule, typically with a solid door and permanently fixed form. The best choice depends on the buyer’s room, entry needs, delivery constraints, device requirements, and budget.
Pressure is not a shortcut to choosing between them. A pressure rating describes the device’s operating pressure, not its suitability for a person or a property. This guide is about physical equipment decisions. It does not provide medical advice or session protocols.
Soft shell vs hard shell at a glance
| Factor | Soft-shell chamber | Hard-shell chamber |
|---|---|---|
| Construction | Flexible pressure-rated enclosure with zipper entry | Rigid capsule with a fixed structure and door |
| Room planning | Measure inflated footprint, entry clearance, and compressor space | Measure fixed footprint, floor load, door clearance, and delivery route |
| Movement | Can be packed or repositioned according to manufacturer instructions | Permanent or semi-permanent placement decision |
| Entry style | Flexible zipper entry | Rigid door or hatch |
| Typical buyer question | Will this horizontal or vertical format fit my home and entry needs? | Does my property support a dedicated fixed capsule installation? |
Neither format is automatically more appropriate. A soft-shell model can be the better home decision because it is designed around residential placement. A hard-shell chamber may suit a buyer with a dedicated room and a specific reason to choose a fixed rigid system. The physical environment should narrow the category first.
What is a soft-shell chamber?
A soft-shell chamber is built from flexible, pressure-rated material. It is supported by an external frame or similar structure and pressurized by compressors outside the enclosure. Horizontal soft-shell models are designed around a reclined position. Vertical soft-shell models are designed for seated use. The key advantage is not that the chamber is casual or temporary. It is that the system is designed around a home-friendly footprint and delivery path.
ColdCraft’s OxyNova and Summit to Sea options are soft-shell chamber choices. They range from compact horizontal formats to larger-diameter horizontal and vertical systems. The buyer should compare the actual inflated dimensions, entry style, compressor location, and manufacturer requirements for each model before deciding.
Soft-shell chamber advantages
Residential fit. Soft-shell equipment can be a practical choice when a buyer needs a chamber that can enter an existing home and live in a dedicated room without turning the project into a permanent capsule installation. That does not remove the need to measure. It changes what needs to be measured: the inflated chamber, the access around it, the entry side, the compressor, and the route into the room.
Configuration choice. Soft-shell systems are available in horizontal and vertical formats. The Summit to Sea Shallow Dive is a compact 26-inch horizontal option. The Dive Vertical is a seated 40-inch format. The OxyNova 7 is a 28-inch-diameter, 90-inch-long horizontal chamber. Those are different room-and-entry choices, not simply different prices.
Placement flexibility. The system can be planned around the home’s existing architecture. That is valuable for a homeowner who has a suitable room but not an open path for a large rigid capsule. It is also useful for a facility that needs to retain flexibility in how it allocates space. Follow the manufacturer’s instructions for any moving, storage, or reconfiguration.
Soft-shell chamber tradeoffs
Soft-shell does not mean small. A large 60-inch chamber can need substantial floor area, entry clearance, and a careful route from delivery to the final room. A soft system also needs the compressor located correctly, with access to power and the surrounding space the manufacturer specifies. It should be treated as dedicated equipment, not something squeezed into the only open corner.
Entry is another real decision. A zipper entry and reclined interior can be ideal for one buyer and unsuitable for another. Buyers should think about mobility, preferred position, and whether a seated vertical format is more practical. This is a comfort and access question, not an upgrade path everyone needs to follow.
What is a hard-shell chamber?
A hard-shell chamber has a rigid structural capsule rather than a flexible enclosure. Its shape does not change when the device is not in use, and it typically uses a solid door or hatch. This creates a more fixed equipment footprint. Buyers considering a hard-shell chamber need to plan for the physical capsule itself, the delivery route, floor loading, access around the system, and the precise electrical and manufacturer requirements.
ColdCraft’s current chamber selection is soft-shell. That is why this hard-shell section stays general: it helps buyers understand the category without implying that ColdCraft currently offers a hard-shell model.
A hard-shell chamber is not automatically the right answer because it is rigid. It is a different equipment and property decision. If a buyer cannot bring the unit into the intended room, provide the necessary floor support, or allocate permanent space around it, the format is wrong for that property regardless of the specification sheet.
Hard-shell chamber tradeoffs
The central advantage of a hard-shell system is its fixed, rigid construction. The central tradeoff is the same: it is a fixed, rigid construction. Delivery, placement, and eventual room changes are more involved. This is why the room should be assessed before a buyer becomes attached to any hard-shell specification.
Hard-shell equipment also varies widely by manufacturer and device. Buyers should not apply a generic pressure, approval, electrical, or operation assumption from one system to another. Review the exact model documentation and ask the manufacturer or qualified professional about requirements that apply to that device.
Prescription requirement is separate from shell type
Every Summit to Sea chamber sold by ColdCraft requires a valid prescription before it can ship. These are FDA-cleared Class II medical devices. OxyNova chambers sold by ColdCraft do not require a prescription. Prescription status is determined by the specific device’s clearance and manufacturer requirements, not by shell type or pressure rating alone.
This distinction matters because buyers often assume “soft” means non-prescription or “higher pressure” means prescription. Neither assumption is reliable. The product’s actual clearance and the manufacturer’s shipping requirement are what determine the purchase path.
How to choose the right format
Choose a soft-shell chamber when a residential fit, flexible format, and manageable delivery path are the priorities. Then choose between horizontal and vertical based on entry, position, ceiling height, and the available floor plan. The current ColdCraft chamber selection offers that comparison across OxyNova and Summit to Sea models.
Consider a hard-shell system only after confirming the property can support a fixed capsule, delivery route, floor requirements, and long-term dedicated location. Do not choose based on a generic “soft versus hard” hierarchy. The correct question is which format can be placed and maintained correctly in the actual property.
ColdCraft helps buyers compare the current home-focused chamber options against their room and purchase requirements. Start with the room brief, call (833) 842-9329, or email support@coldcraftrecovery.com.
Frequently asked questions
Are soft-shell hyperbaric chambers good for home use?
Soft-shell chambers can be a practical home equipment choice when their inflated footprint, entry style, compressor location, power requirement, and delivery path fit the property. Choose the actual model based on the room and manufacturer requirements.
Is a hard-shell chamber better than a soft-shell chamber?
Neither is automatically better. A hard-shell chamber is a fixed rigid equipment decision. A soft-shell chamber is a flexible-format equipment decision. The better choice depends on the property, entry needs, room plan, and specific device requirements.
Do soft-shell chambers require a prescription?
Shell type does not determine prescription status. Every Summit to Sea chamber sold by ColdCraft requires a valid prescription before it can ship. OxyNova chambers sold by ColdCraft do not require a prescription.
What should I measure before buying a chamber?
Measure the final placement area, chamber entry clearance, compressor location, electrical access, ceiling height for vertical systems, and the complete delivery route into the room.

