Before making a purchase, put the room, the user, and any assisting personnel on the same checklist. Otherwise, even if the cabin dimensions are suitable, ancillary equipment, power supply, ventilation, or maintenance space may still bring the installation plan to a halt.

Private Is Not the 1 Device Class

When a merchant refers to a product as a private hyperbaric chamber, the term usually describes the environment or all relationships in which it is planned to be used, and does not directly indicate whether the cabin is software or hardware, what pressure is allowed, or whether it can be operated independently by cabin personnel.

First, request the complete model number, labeling, instructions for use, and intended use from the supplier. The instruction manual shall clearly specify the sales and usage conditions for the target market and indicate whether it is applicable to residential or other non-professional settings. Names such as “Home,” “Personal,” or “Private” cannot substitute for model-level documentation, nor can they waive requirements for prescriptions, training, oversight, maintenance, and inspections.

Let’s Clarify the Usage First

A single-person cabin that accommodates only one person does not mean that “one person can complete all operations.” When selecting equipment, it is necessary to confirm the number of users, whether they will be seated or lying down, the entry and exit method, the internal space, the rated load capacity, and the emergency evacuation requirements. When mobility is limited, you also need to consider the clear dimensions of the entrance, the threshold height, the transfer method, and the operational space outside the cabin; you cannot rely solely on product photos for assessment.

Pressure isn’t always better when it’s higher. Verify the normal operating pressure, the maximum allowable working pressure, and the relief set pressure, and also clarify whether ATA, atm, or psi refers to absolute pressure or gauge pressure. Only when this information corresponds to the intended use, cabin structure, oxygen supply method, and operating instructions do the pressure readings have meaningful comparability.

Include Extravehicular Personnel in the Utilization Plan

Users should be able to understand the instructions and alarms, complete the pressure balance, safe access to the cabin, and help when abnormal. At the same time, the qualifications, training, presence requirements and emergency duties of the extra-cabin operators or guardians shall be determined.

Visual or audible contact shall be maintained during operation. Room layout and background noise shall not interfere with observation, hearing of alarms or communication with the cabin. Private equipment should not, on this basis, be assumed to operate unattended; specific personnel arrangements shall be governed by the equipment’s specifications and local regulatory requirements.

Measurement of Residences by Complete System

First, walk 1 times along the actual transportation route: whether the door width, elevators, corridors, stairs, turning space and ground bearing are appropriate. After the equipment is brought into the room, sufficient space must also be reserved for the control system, air supply lines, electrical systems, cooling, fire protection, and maintenance.

It is marked as portable or foldable and only describes certain characteristics of the pod or deployment method. Compressors, oxygen supply or generation equipment, cooling equipment, and associated accessories shall still be verified as a single system with respect to weight, packaging dimensions, the number of handlers required, and installation requirements.

Residential power supplies, outlets, grounding, and backup power systems shall comply with the manufacturer’s requirements. Ventilation, temperature and humidity, dust and noise will also affect operation and monitoring. Controllers, valves, electrical wires, and air hoses should be kept out of reach of children, pets, and unauthorized personnel, and the surrounding passageways must remain clear of obstructions or loose wires.

Oxygen Supply and Fire Protection Systems Cannot Be Connected Independently

High concentrations of oxygen increase the risk of fire. Supplementary oxygen, oxygen concentrator, mask or nasal cannula can only be used if the specific model description clearly allows, and the connection method is specified. Do not, just because the interfaces appear to match, independently add external oxygen sources, electrical devices, or electronic products.

Smoking, open flames, heating equipment and electrical faults are included in the site assessment. Clothing, cleaning agents, personal care products, and auxiliary materials brought into the cabin should also be verified beforehand for compatibility with high-pressure and oxygen-enriched environments. Fire protection measures must match the actual cabin type and oxygen supply mode.

Place Maintenance and Emergency Support Before the Purchase

In addition to the formal quotation, obtain the configuration list, technical specifications, labels, installation conditions, maintenance plan and safety information, and ask who is responsible for installation, commissioning, operation training, maintenance training, warranty and spare parts. Remote areas in particular need to confirm that on-site services and emergency repairs can arrive in a timely manner.

Before use, procedures should be prepared for handling medical emergencies, fires, power outages, equipment failures, communication interruptions, and situations where depressurization cannot be performed as intended. Valid contact information for medical personnel, service providers, the manufacturer, and local emergency services must also be maintained. If air leakage, structural damage, abnormal odor, abnormal noise or control failure is found, stop using the equipment according to the instructions and contact the qualified service provider.

Complete a checklist with model, use, personnel, residential conditions and service responsibilities. Any key condition can only be explained by verbal commitment, so don‘t pass it with a more beautiful appearance or higher pressure figures.

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First Confirm Who “Two People” Specifically Refers To

Explain to the supplier whether the two users are two adults, or 1 adult and 1 child, and confirm whether they can maintain the position specified for the product at the same time. ST901 is a widened soft horizontal cabin. The adaptation method given in the data is that 1 adults and 1 children lie together. ST2200 is also facing 1 adults and 1 children, but in sitting or leaning back posture. They cannot be interpreted as suitable for two adults just because they are “wider in space.

The MC4000 N/U is a two-seat soft cabin. Its rated number of people, sitting position and entrance form are closer to the two-person hyperbaric chamber these 1 purchase requirements. Another option is a multi-person hardware cabin: HE5000 can be equipped with two-seat, 3-seat, bed board or bench, but the specific internal layout should still be clearly written when quoting, and the series name cannot be regarded as a two-seat configuration certificate.

Try to Get in and Out First, Then Compare Appearance

If two people can sit down, it does not mean that they can enter and leave smoothly. MC4000 N/U adopts U-shaped or N-shaped zipper structure with enlarged entrance, which can be used for wheelchair entry. The overall dimensions of the cabin are 140cm long, 130cm wide and 175cm high. If one of them uses a wheelchair, check the clear width of the entrance, threshold, ramp, cabin fixing, wheelchair material compatibility and rated load before purchasing. Product photos can only show the general space, can not replace these dimensions and restrictions.

The hardware compartment also depends on the opening direction of the door, the net size of the entrance, the internal turning space and the emergency evacuation conditions. The overall dimensions of the HE5000 are 2070mm long, 1616mm wide, and 1749mm high. The catalog provides a variety of internal layouts; the HE5000 Fort uses face-to-face multi-person seats. Don’t just ask “double”, ask the supplier to indicate the number of seats, seat orientation, available interior space and the corresponding complete model on the configuration list.

Pressure Is Not an Additional Label for Capacity

The pressure specification of MC4000 N/U is 1.3 ATA or 1.4 ATA, and the pressure specification listed in HE5000 series data is 2.0 ATA. A higher number does not automatically indicate that the product is more suitable for two people, nor can it alone prove use, effectiveness or safety. When comparing, the pressure caliber should be unified, and the normal working pressure, maximum allowable working pressure and pressure relief setting pressure should be checked at the same time.

Also put pressure and structure, intended use, oxygen supply mode, operating instructions and professional supervision requirements together. If the supplier uses atm or psi, it shall be required to indicate whether it represents absolute pressure or gauge pressure. Information containing psi also distinguishes psia from psig. Numbers with different calibers are placed in the same quotation sheet. They look comparable, but in fact they may not be the same thing.

Verify the Site Against the Entire System

The folding of the software compartment does not mean that the compressor, oxygen supply or oxygen generation equipment, cooling equipment and accessories can be ignored. The MC4000 N/U cabin data is marked with a weight of 18kg, but the packaging size, component weight, number of carriers and required time shall be confirmed according to the whole system for handling and installation.

Hardware-based multiplayer pods have more straightforward venue requirements. HE5000 data label weight 650kg. Before purchase, measure the transportation channel, door width and turning space, and confirm the ground bearing, room clearance, power supply, grounding, ventilation, fire protection and maintenance space. The equipment can pass through the door, which only means that it can be transported in, and does not mean that the installation location meets the operating and maintenance conditions.

Match Quotes with Verifiable Configurations

At a minimum, the 1 comparable quotation shall indicate the manufacturer, complete model, number of rated personnel, internal layout, pressure caliber, cabin material, oxygen supply configuration, installation conditions and service scope. It should also be confirmed which instructions define the communication, emergency pressure relief, cleaning, maintenance, inspection and external monitoring requirements. If the equipment is used in a specific market or medical scenario, the relevant licenses, intended use and operating conditions should also be implemented to specific models, and cannot be replaced by enterprise-level publicity or similar models.

Finally, I return to the actual actions of the two users: whether they can enter, sit firmly or lie down according to the prescribed posture, and whether they can communicate and evacuate quickly in case of abnormality. If these problems do not have the corresponding size, configuration and written instructions, do not use the word “double” to make a decision.

Confirm What the Price Corresponds to First

The same price may refer to the cabin only, or it may include compression, oxygen supply or oxygen generation, cooling, control and accessories. Even if both quotations say "complete set", the items contained may not be the same. When inquiring, the supplier should list the main engine, supporting equipment, consumables, spare parts, transportation, home handling, installation, debugging and training item by item, not just the total number.

The price type should also be clearly written. The public face price, the quoted price given for specific conditions and the final transaction price are not of the same caliber; the currency, applicable market, effective date, expiration date, taxes and delivery location also affect comparability. "Free shipping" is also not automatically understood to include insurance, customs, moving into the room, installation and local costs.

The Open Face Price Can Only Be Used as a Bordered Reference

The 1 group applies to the U.S. market, dollar-denominated product face prices, which can explain how configuration changes open the budget, but is not representative of the entire market. Taking ST701 configured for BO10L, KY-01 and OD-1A as an example, the face prices of 1.3 ATA, 1.4 ATA and 1.5 ATA versions are US $8,886, US $10,883 and US $11,500 respectively. Under the same three-gear pressure and similar configuration, the face price of ST801 is US $9,174, US $11,171 and US $12,500 respectively.

Hardware models have different price ranges. The HP1501 75cm diameter version is equipped with 10L all-in-one machine, and the surface price is US $26,145. The 90cm diameter version is US $31,395. The 75, 85 and 90cm diameter versions of HP2202 are priced at US $40,414, 47,145 and 49,770 respectively under the configuration of 10L all-in-one machine and BO10L.

These numbers are only suitable for comparison if the market, currency, date, full model, and configuration range are consistent. They cannot directly derive the current transaction price, nor can they prove that higher-priced equipment is necessarily more suitable for the home environment.

Housing Conditions May Incur Costs Beyond Equipment Expenses

Go 1 times along the transportation path before placing an order. Does the door, elevator, staircase, turnaround space and room clearance accommodate packaging and equipment? Does the ground load, power, grounding, ventilation, fire conditions and maintenance space meet the installation requirements of the specific model? Any inappropriations may result in additional handling, site preparation or installation costs.

"Portable" or "foldable" describes only some of the features and does not mean that the entire system can be easily moved. Compressors, oxygen supply or oxygen making equipment, cooling equipment and accessories outside the cabin shall be checked for weight, package size, number of carriers and installation conditions respectively. Don't wait for the equipment to arrive at the door, only to find that the quotation does not cover the entry and commissioning.

Separate Long-Term Use Costs

The initial investment can be broken down into equipment base price, transportation, site preparation, installation and commissioning. After being put into use, there may also be electricity, compressed air, oxygen or oxygen generation, cooling, consumables and personnel input. The maintenance section shall check cleaning, preventive maintenance, safety checks, calibration, wearing parts, service contracts and spare parts supply against the manufacturer's cycle for the specific model.

When comparing the multi-year costs of the two devices, the same estimated useful life, number of years of use, energy prices, maintenance coverage and residual value assumptions are used. Financing or installment simply changes the timing of payments, and lower monthly payments do not automatically mean lower total costs. Missing items should not be treated as zero, but should be marked as "to be quoted" or "to be confirmed".

Clear the Adaptation Threshold First, Then Discuss the Lowest Price

Household use does not mean that you can not check the use and conditions of use. The intended use, target market requirements, operating instructions, custody arrangements and ongoing support conditions of the specific model should be confirmed prior to purchase. For residential use, it is also necessary to judge whether the user can understand the instructions, identify the alarm, complete the pressure balance, enter and exit the cabin, and ask for help in time in case of abnormality. It cannot be preset that personal equipment can operate unsupervised.

After receiving the formal quotation, the most practical way is to establish a comparison table of the same caliber: complete model and sub-model, pressure and caliber, structure and number of people, system inclusion items, delivery and installation, training, quality assurance, maintenance and spare parts occupy one column respectively. Eliminate solutions that do not meet the purpose, site, personnel or document conditions, and then compare the total cost of ownership among the remaining candidates. The resulting budget is close to the amount needed for a home system to actually land.

First clarify who the “four people” include

Ask the supplier for a description of the rated load of the specific model and confirm the number of users: 4 or the maximum number of people in the cabin is four, including the staff. If there is no written explanation, do not calculate from the appearance size or the number of seats in the photo.

Next, verify the interior layout plan. The number of seats is only one of them, and it also depends on whether the personnel occupy the operating position, entrance or passage space after sitting. When cabin staff are required, please mark the position of the staff on the drawing and whether the position changes the number of users that can be accommodated.

Assign oxygen supply configurations to each location

The capacity description should match the oxygen supply configuration. Please ask the supplier to mark the oxygen supply interface corresponding to each use position one by one, and explain the configuration used by the staff in the cabin. If the proposal relies on a mask, interface or accessory, it should be required to appear in the configuration list and instructions for use of the model; the words “multi-person cabin” alone cannot confirm the configuration of each seat.

When comparing the two models, check the rated number of users, the position of the cabin staff and the interface layout in the same drawing or specification sheet. If these data are scattered in different documents, let the supplier confirm that they correspond to the same model and the same configuration.

Confirm entry, observation, and evacuation conditions

For users who require assisted access, have limited mobility, or may require in-cabin care, in addition to the seating layout, confirm the entrance net size, threshold, in-cabin turnaround space, and assist person standing. Walk-in only describes the method of entry and does not individually prove that the wheelchair or stretcher fit.

Ask the supplier to explain how personnel leave in an emergency, who is responsible for the operation, and whether the plan covers the actual load and staff. Don’t just accept a short response such as “can accommodate four people”; it needs to correspond to the specific layout, equipment description and evacuation arrangements. If the information does not specify the relevant conditions, it should be regarded as unconfirmed.

Filter models using complete deployment criteria

First determine the number of people using at the same time, and then include the staff who may be in the cabin into the space arrangement; then check the internal layout, oxygen supply interface, entrance and evacuation conditions item by item. It is also necessary to confirm whether the equipment can pass through the door, elevator and turning channel on site, and whether there is space required for control system, gas circuit, electrical, ventilation, fire fighting and maintenance after installation. The space and personnel arrangement of multi-person hardware cabin cannot be judged only according to the external dimensions of the cabin.

If it is used in residential or non-professional places, check whether the specific model description covers the use environment and who is responsible for operation, supervision and maintenance. The fact that the living space can accommodate equipment does not mean that the entire system has suitable deployment and management conditions.

The nominal capacity of the 4 person hyperbaric chamber is sufficient for actual screening only when the model document clearly states the rated number of people, personnel roles, internal layout and interface configuration, and the site conditions can support access, observation and evacuation. Please ask the supplier to write these contents into the official configuration file of the same model before placing an order.

Ask first what “portable” means

“Portable” describes the nature of movement or deployment and does not mean that the cabin, pressurization equipment, oxygen supply equipment and accessories can be carried by one person. The flexible cabin is not equal to the ordinary oxygen tent: judging the type of equipment still depends on whether it accommodates the whole body, whether the cabin pressure is higher than the environment, and the intended use of the specific model.

Take the foldable ST801 as an example. The weight of the cabin listed in the product data is 13kg, and the size is 220cm long and 80cm in diameter. This example shows that the cabin itself is easy to store or move, but it cannot infer the total weight of the entire system, the number of people to carry or the deployment time. Before placing an order, the supplier should list the weight and external dimensions of the cabin, supporting equipment and accessories one by one, and confirm which parts need to be handled separately.

Measure the transportation route and space 1

First measure the door, corridor, stairs or elevator through which the equipment will pass, and then check the final placement. The size of the folded outer package, the size of the unfolded cabin and the space required for equipment operation are not the same set of data; there is also room for control, electrical, gas, heat dissipation and maintenance. If the room can be put down, it does not mean that the whole set of equipment can be transported into or installed smoothly.

If you plan to use it at home, also confirm that the instructions cover the use environment and verify the requirements for power supply, ventilation, temperature and humidity, and external operating space. Noise, debris and control components that are easily touched in the home environment may also affect alarm identification and operation. Please ask the supplier to provide installation conditions according to the specific model and configuration, not only by the name of “home” or “portable.

Check user against continuous operating conditions

Portability does not reduce the requirements for access to the cabin, user observation, communication and emergency evacuation. The size, posture and mobility of the user will affect the suitability of the entrance and interior space; home or mobile scenes should also confirm who is responsible for the operation, who is observing outside the cabin, and how to follow the equipment instructions in the event of an alarm or power failure.

Pressure labels are also not a substitute for model descriptions or protocols. Maximum pressure, normal working pressure and pressure relief settings are different parameters; the equipment can reach a certain 1 pressure, which does not mean that the pressure is suitable for a certain user. Do not set your own pressure according to the product name or general conversion, and do not interpret “portable” as running unsupervised.

When making an inquiry, please check the specific model, complete configuration list, piece-by-piece handling data, installation requirements and operating environment instructions in the same document.

First, confirm what ATA stands for

ATA is a unit of absolute pressure. 2.0 ATA indicates that the absolute pressure inside the chamber is approximately two standard atmospheres, not an additional two atmospheres above the ambient atmospheric pressure. After conversion, the 2.0 ATA is about 202.6 5千帕 absolute pressure, or 29.39 psia.

If the supplier writes “2 ATA” and “about 14.7 psi” at the same time, they may use absolute pressure and gauge pressure respectively: under the assumption of standard sea level atmospheric pressure, 2.0 ATA is equivalent to about 14.70 psig. The actual ambient air pressure will vary from place to place and from weather, so when comparing units, ask the other party to state ATA, psia or psig, and the ambient pressure conditions used; a single “psi” is not sufficient to indicate the comparison basis.

Don’t equate a single pressure value with the entire specification

For the specification table corresponding to the model, at least the normal working pressure, the maximum allowable working pressure and the set pressure of the pressure relief device should be viewed separately. If the data only reads “up to 2.0 ATA”, it does not explain how the equipment controls the pressure during normal operation, nor does it explain the overpressure protection setting value.

It is also necessary to distinguish between the rated pressure of the equipment and the pressure in the use plan. The fact that a device reaches a certain pressure does not mean that every user is suitable for use under that pressure; nor does the product name or pressure number alone prove that the device is suitable for a certain treatment. The target use should be checked with the model description, oxygen supply method, operating requirements and professional supervision conditions.

Check the model number instead of just comparing the product title

The same 2.0 ATA callouts may appear on different structures, sizes, and complete configurations. After confirming the complete model, check the cabin structure, internal available dimensions, inlet net width and height, rated load, and system configuration such as compression, ventilation, oxygen supply, control and communication. Product pictures can help identify the appearance, but they cannot replace the model document, nor can they prove the internal dimensions or adaptation conditions of the equipment.

If the supplier uses “2 atm” or “2 atmospheres”, it is directly required to explain whether this is absolute pressure or gauge pressure, and then compare it with the working status in the model document. If the other party is expressed in psi, psia or psig must be written clearly and the corresponding ATA absolute pressure must be given. It is easy to draw wrong conclusions by comparing numbers of different calibers in the same table.

Incorporate installation conditions into inquiry

In addition to the size of the cabin itself, it is also necessary to confirm the shape and weight of the whole set of equipment, the size of packaging and transportation, the door opening and turning path, the service distance after installation, and the power supply, air supply and ventilation conditions required on site. In particular, the internal length, diameter, entry size and available size of the bed or tray should be checked separately for the horizontal chamber; the external area is suitable and does not mean that there is enough space for users to enter and leave or equipment to maintain.

A 1 quotation that can be used for decision-making should be able to specify the model and configuration, and explain the scope of delivery, installation, training, maintenance and after-sales service. When it comes to the target market license, pressure vessel basis or inspection records, the documents corresponding to the specific model should also be obtained, and the name, scope of application and valid status of the documents should be checked. Do not apply certificates or general certification statements of other models.

These questions can be directly sent to the supplier during inquiry: 2.0 ATA is absolute pressure? What are the normal working pressure, maximum allowable working pressure and pressure relief set values? Which complete model and configuration does the pressure data correspond to? Where can I find the size, weight, entrance and site requirements of the whole set of equipment? After receiving the written reply, compare the solutions.

When evaluating the price of a hyperbaric oxygen chamber, don’t rush to compare the total amounts. First disassemble the caliber of each number to confirm whether it is a public list price, a formal offer for current conditions, or the total cost of the equipment once it is put into use.

First Confirm What the Price Corresponds To

The publicly listed price only reflects the displayed price of a particular model under specific market conditions, on a given date, and for a particular configuration. The formal quotation will vary according to pressure, structure, size, system composition, delivery location and service scope, and the final transaction price cannot be directly inferred from the public price.

When inquiring, the supplier should be required to write down the manufacturer, complete model and sub-model, and indicate the currency, applicable market, price type, effective date and validity period. It is also necessary to distinguish between the price of the cabin, the price of the complete system, and the turnkey installation price. It is still not enough to write "complete machine" or "complete set". Cabin, air compression, oxygen supply or oxygen generation, cooling, control, communication, furniture, consumables and spare parts are best listed one by one.

The condition of the equipment also affects the meaning of the price. New, used, refurbished, demo, and leased-return devices should not be placed in the same column for direct comparison. For non-new machines, ask about year of manufacture, operating or cycle records, maintenance status, modifications, remaining support, and warranty coverage.

See Configuration Differences with Specific Prices

Taking the US market face price sorted out on August 20, 2026 as an example, the ST701 is 1.3 ATA at US $8,886, 1.4 ATA at US $10,883 and 1.5 ATA at US $11,500 under BO10L, KY-01 and OD-1A configurations. In the same configuration, the 3 pressure version of the ST801 is $9,174, $11,171 and $12,500 respectively. The 1.5 ATA version of the ST901 is $13,500, and the 1.5 ATA version of the L1 is $14,000.

The hardware horizontal model adopts another set of configuration and size caliber. The HP1501 75cm diameter and 90cm diameter versions are priced at US $26,145 and US $31,395 respectively under the 10L all-in-one machine configuration. The HP2202 75, 85 and 90cm diameter versions are priced at US $40,414, US $47,145 and US $49,770 respectively under the 10L all-in-one machine plus BO10L configuration.

These figures can only be used to understand "how model, pressure, diameter and configuration changes will be reflected in the list price", and cannot be expanded into the usual price range of the entire market, nor can it be assumed that hardware cabins must be more expensive than software cabins. If the candidate equipment has different rated working pressure, pressure caliber, pressure-bearing structure, number of people, posture, internal space and supporting systems, the amount alone is not comparable.

Separate Pre-Delivery Costs

From the factory to use, there may be packaging, transportation, insurance, customs duties, taxes, household handling, installation, commissioning and acceptance. Cross-border transactions also involve place of delivery, transfer of risk, customs clearance and import liability. “Free shipping” on the page does not include insurance, customs duties, handling, or installation.

Family or personal use scenarios should also check the transportation path and installation space in advance. Site preparation and special handling may result in additional costs if doors, elevators, stairs, turning spaces, ground carrying, power supply, grounding, ventilation, fire protection and maintenance spaces do not meet requirements. The folding of the cabin does not mean that the compressor, oxygen supply equipment, cooling equipment and accessories can be moved at will or do not require installation conditions.

Ask the supplier to write out the ex-factory price, transportation price and installation completion price in the quotation, and explain who will bear each item. Only in this way can we determine whether the low price stems from product differentiation or from the omission of certain essential items.

Ongoing Costs in Addition to Purchase Price

Full life cycle costs also typically include operation, maintenance, repair, component replacement, and end-of-term disposal or salvage value. Operating items may involve electricity, compressed air, oxygen or oxygen generation, cooling, consumables and personnel input, depending on the equipment design and how it is used.

Maintenance costs cannot be estimated using a uniform percentage based on experience. The duration and scope of cleaning, preventive maintenance, safety inspection, calibration, wearing parts and service contracts shall be checked according to the specific model. Training, retraining, operation monitoring, downtime, remote support and on-site service travel should also be asked, not zero because the first quotation did not appear.

To compare multi-year costs, the estimated useful life, number of years of use, energy prices, maintenance coverage and residual value assumptions should be harmonized. Financing, installments or leases change the timing of cash flow, and it is impossible to judge the total cost to be lower by looking only at monthly payments.

Low Prices Are Not a Substitute for Procurement Thresholds

Price comparisons should only be made after the conditions of use, safety, site, personnel and service have been met. Procurement for medical purposes in the U.S. market is also subject to checking applicable FDA records by specific manufacturer and model; sales pages, business registration information, or higher selling prices are not a substitute for model-level licensing verification.

Formal quotations and contracts shall state the manufacturer, model, configuration, quantity, equipment status, payment node, deliverables, warranty starting point, parts and labor scope, service response conditions, and how to deal with configuration changes, delays, blocked imports, or unacceptable acceptance. If the payment subject, contract subject and collection subject are different, they should also have an explainable relationship.

Finally, the candidate quotations are put into the same table: the first column records complete equipment and configuration, the second column records one-time inputs such as transportation and installation, the third column records annual operation and maintenance, and the fourth column retains planned replacement and unplanned maintenance. Missing items are marked as “To Be Confirmed”; do not enter zero. Only by completing these boundaries can the difference between the two quotes truly reflect the cost disparity.

First, find out what 2.0 ATA refers to

ATA usually indicates absolute pressure. 2.0 ATA is approximately equal to an absolute pressure of 202.65 kPa; under standard sea level conditions, it corresponds to a gauge pressure of approximately 101.325 kPa, or approximately 14.6959 psig. If the quote only states “2 atm” or “14.7 psi”, you must continue to ask whether it is absolute pressure or gauge pressure. Different calibers, seemingly close numbers may point to completely different working conditions.

Then check whether the specification sheet separates the normal operating pressure, the maximum permissible operating pressure, and the pressure relief device setting pressure. With only a prominent 2.0 ATA, it’s impossible to tell whether it’s a long-term working value, a design upper limit, or the highest value used in the promotion. The fact that a device can reach a certain pressure does not mean that it operates at that pressure every time it is used.

Do not use soft instead of pressure-bearing structure description

Soft, fabric, and inflatable are often used to describe flexible or fabric-loaded structures, but these names themselves do not specify material layers, seams, zippers, valves, or pressure ranges. When verifying a 2.0 ata soft hyperbaric chamber, the purchaser should ask the supplier to indicate the true pressure boundary and provide the substrate, coating, seam process, zipper structure, valve configuration, and design and test documents corresponding to the rated pressure.

The software model in the current product information uses a TPU cabin with a pressure specification of 1.3, 1.4 or 1.5 ATA; the model listed as 2.0 ATA uses a hardware structure. This difference cannot be used to assert that there are no other designs on the market, but it is sufficient to show that the pictures, instructions or license materials of the low-pressure soft compartment cannot be transferred to a different model that claims to achieve 2.0 ATA.

Confirm the complete system instead of just looking at the cabin

Foldable only means that the cabin is easy to store, does not mean that the entire system can be moved by one person, nor does it mean that no fixed conditions are required for installation. The quotation should list the cabin, compressor, oxygen supply or production equipment, cooling equipment, control system, communication device and accessories item by item. How air enters the cabin, what gas the user inhales, what interface oxygen is delivered through, and how exhaust gas is discharged must also correspond to the instruction manual of the same model.

If a sales page shows a flexible cabin but lacks total system weight, packaging dimensions, power supply, ventilation, maintenance space, and transportation requirements, “portable” is still just an unverified sales description.

Put the purpose and license on the specific model

Higher pressures do not automatically lead to better applicability, nor can they alone prove that the device meets the definition or regulatory requirements of clinical hyperbaric oxygen. Intended use, pressurized media, intake gases, cabin structure, professional supervision, and target market licensing must be considered together. The license for a particular low-pressure fabric compartment cannot be extended to other brands, other pressures, or other uses.

The procurement documents should at least correspond to the manufacturer, complete model, target market license number, intended use, and current status. When “FDA approved ”“medical grade” or a standard logo appears, do not stop at the promotional page; check the document holder, applicable model, manufacturing location, standard version, and valid scope.

Complete the final judgment with model-level evidence

Before delivery, compare the quotation, configuration list, technical specifications, label sample, instructions for use, installation conditions, maintenance plan and safety information together. The pressure, materials, licenses, or test results should all belong to the same model in the quote and cannot be replaced by another device of the same brand.

Finally, I would like to ask the supplier a very specific question: Please provide the normal operating pressure, maximum permissible operating pressure, pressure relief setpoint, and design, testing, and licensing documents corresponding to the complete model for this flexible cabin in 2.0 ATA caliber. If any of these items still do not correspond, mark the product as “insufficient information” first, and do not allow the highest pressure or portable label to replace the structure and document verification.

For a 2-person luxury hyperbaric chamber, “luxury” cannot substitute for any technical specifications. Power seats, star roofs, ambient lights, larger transparent viewing areas or custom colors can improve the experience and appearance, but these configurations do not automatically demonstrate higher levels of pressure, oxygen, safety or compliance.

First confirm how the two people will use it

The double-person capacity needs to be specified in terms of specific postures and positions. In Baobang's existing product range, HE5000 Fort adopts a face-to-face multi-person seat layout. HE5000 can choose two-seat, 3-seat, bed board or bench layout; HE5000 Plus can accommodate four people and supports internal layout customization. When inquiring, do not just write "two-person hyperbaric chamber", but ask the supplier to mark the number of seats, seat direction, leg and head space, and the path when two people enter and exit at the same time in the model and configuration list.

It looks spacious on the outside, but it’s still not enough. The actual number of people available in the multi-person cabin will also be affected by the oxygen supply interface, the position of the crew in the cabin and the emergency evacuation plan, and cannot be calculated from the photos, dimensions or number of seats. If you plan to have a caregiver accompany you, it is important to confirm that the location is a rated configuration rather than adding a chair temporarily.

Separate the luxury features from the core specifications

You can divide the procurement form into two columns. The 1 column records the conditions that determine whether it can be used: complete model, normal working pressure, maximum allowable working pressure, pressure relief setting pressure, pressure unit caliber, rated number of people, oxygen supply mode, communication and emergency functions. In another column, record the experience configurations, such as electric seats, lighting, color, emblems, or the control interface.

This approach helps avoid a common misjudgment: mistaking visible comfort features for the equipment level. Taking the HE5000 series as an example, the catalog documents 2.0 ATA, medical-grade stainless steel cabins, and provides customized options such as power seats, star roofs, and ambient lights; however, the weight, size, and internal layout vary between models. The comparison still needs to correspond to the specific model and the current quotation configuration, and the series name cannot be used to replace the model-level file.

Please provide the complete pressure value

Seeing only “2.0 ATA” is not enough to make a comparison. The specification sheet shall state the normal working pressure, the maximum allowable working pressure and the set pressure of the pressure relief device, respectively, and indicate that the ATA uses absolute pressure caliber. The rated pressure or maximum pressure is not equal to the specific use pressure of a user, let alone the applicable population or use plan.

If psi appears in the quotation at the same time, the supplier is required to indicate whether it is psia or psig and give a comparative caliber consistent with ATA. The numbers at different reference zeros and different working states are sorted together, seemingly accurate, but in fact there is no comparability.

First measure the transportation and installation route

A double hard-shell cabin isn’t just something that can fit in the room. Taking catalog data as an example, HE5000 Fort has an overall size of 2270 × 1167 × 1874mm and a weight of 520kg. HE5000 is 2070 × 1616 × 1749mm and weighs 650kg. These are model specifications and should not be directly interpreted as usable internal storage, package dimensions, or the total operating weight.

The purchaser shall also check the door width, elevator, corridor, turning space and ground load separately, and then confirm the service space required for control system, gas circuit, electrical, heat dissipation, fire protection and maintenance. The entrance shall meet the requirements for clear width, clear height, threshold height, opening direction, and door swing space. A walk-in design or a wide doorway alone does not guarantee wheelchair accessibility, stretcher access, or barrier-free adaptation.

Ask clearly which complete system the quote includes

The quoted price for the cabin and the quoted price for the entire system cannot be directly compared. The list shall itemize cabins, compressors, air handling, oxygen supply or production, cooling, control, monitoring, communications, safety accessories, seats and common spare parts. Custom entrances, seats, interfaces, appearance or internal layout should also be written into the contract, not just in the renderings or sales communication.

In addition to the total price, transportation, home handling, installation, commissioning, training, maintenance, consumables and repair response must be disassembled. When the warranty starts, which parts include labor or travel, and whether spare parts can be obtained after shutdown may affect long-term use more than a certain decorative configuration.

Inspect upon arrival based on model and configuration

Check the manufacturer, brand, complete model, sub-model, serial number and contract, packing list and equipment label before acceptance. Instructions, installation manuals, maintenance materials and target market documents should also correspond to the same model and configuration, and cannot be replaced by materials of other equipment of the same brand.

Before the first manned use, the pressure, pressure relief, ventilation, air or oxygen supply, control, alarm, communication and emergency functions shall be checked according to the methods specified in the model, and the installation and test records shall be kept. When configuration discrepancies, alarms, leaks, structural damage or missing documents are found, first form a record of non-compliance and complete the closed loop. Do not skip this step because the cockpit looks comfortable and the appearance is highly complete.

Finally, remove "luxury" from the inquiry form and replace it with a measurable, documented, and acceptable field. How to realize the capacity of two people, how to get in and out of two people, what the whole system includes, whether it can be installed on site, and how to evacuate in case of abnormality, these 5 groups of questions are all answered in writing at the model level before they are suitable for price comparison.

Therefore, to confirm whether a 2.0 ata hyperbaric chamber meets the target purpose, the starting point is not to ask "is the pressure high enough", but to put the pressure caliber, pressure bearing structure, oxygen supply mode, complete configuration and use conditions in the same checklist.

First convert 2.0 ATA to a verifiable pressure

ATA is an abbreviation for atmospheres absolute, with absolute vacuum as the zero point. 2.0 ATA represents an absolute pressure of two standard atmospheres, which is 202.65 kPa, or approximately 29.3918 psia. Under the assumption of standard sea-level atmospheric pressure, the corresponding gauge pressure is approximately 101.325 kPa, or 14.6959 psig.

This set of conversion factors can only help you interpret the specifications; it cannot replace on-site pressure calibration. Local ambient pressure varies with altitude and weather conditions; therefore, the on-site relationship between absolute pressure and gauge pressure should be based on the local ambient pressure. If a supplier only specifies “2.0” or “approximately 29 psi,” you should also ask whether the pressure is absolute, gauge, or atmospheric.

Next, let's look at three different fields: normal operating pressure, maximum allowable working pressure, and relief device set pressure. Providing only a single, prominent ATA value without specifying which attribute it corresponds to is still insufficient to determine how the device will perform. The rated pressure is not the same as the operating pressure in a specific application.

2.0 ATA is not a quick proof of purpose or authorization

A pressure of 2.0 ATA does not automatically certify that a device is suitable for a particular medical use, nor does it, by itself, demonstrate that a specific model has market authorization for its intended purpose. Pressure, cabin structure, breathing gas, intended use, applicable standards, and professional management requirements must be reviewed in conjunction.

Clinical definitions are particularly prone to being oversimplified. The clinical hyperbaric oxygen definition of UHMS in 2023 includes the condition that the patient's whole body is located in a hardware chamber conforming to the corresponding pressure vessel and fire protection regulations, the pressure is not less than 2.0 ATA, and breathing medical grade oxygen. Therefore, “reaching 2.0” is only one of the conditions, not a complete conclusion. When purchasing for the U.S. market, the product code, 510(k) records, intended use and current status should also be checked by manufacturer and specific equipment, and records of other products of similar models or the same brand should not be borrowed.

Even under the same pressure, there are still different cabin options available

2.0 ATA does not specify a single form factor. Taking MACY-PAN product data as an example, HP2202 and HP2202 DIA belong to horizontal hardware cabins. HP750 is a single-seat hardware cabin; HE5000 Mono uses walk-in transparent doors, while HE5000 Fort, HE5000 and HE5000 Plus provide different multi-person layouts. The pressure rating for all these models is listed as 2.0 ATA, but their posture, inlet configuration, internal volume, equipment weight, and system setup differ.

Whether to choose a reclining or seated model shouldn’t be based solely on the display images. Horizontal equipment should check the internal length, diameter or width and height, and the available size of the bed board, tray or stretcher; sitting or vertical equipment should also depend on the seat width, leg and head space, inlet net size and adjustment range. For multi-person cabins, it is necessary to separately confirm the maximum cabin capacity, the permitted number of occupants, the positions of cabin personnel, and the emergency evacuation procedures.

The quotation must cover the entire system

A hyperbaric chamber is more than just a cabin. A complete system may include pressurization, depressurization, ventilation, air or oxygen supply, control, monitoring, communication, and safety accessories. Different hardware models of MACY-PAN also adopt different matching combinations: for example, HP2202 is equipped with all-in-one machine and air conditioner, HP2202 DIA and HE5000 Mono data list all-in-one machine and high-efficiency air cooling system, while some multi-person models of HE5000 series list oxygen generator, air compressor and high-efficiency air cooling system.

When receiving the quotation, you should ask the supplier to specify item by item whether the body, control equipment, air compressor, oxygen generation or supply system, cooling system, installation, commissioning, training, warranty, and maintenance are included. Two devices both labeled as 2.0 ATA are not comparable in price alone if they operate within different system boundaries.

Perform a reverse check before placing the order

First, evaluate the equipment based on its actual operating conditions, rather than rigidly matching it to catalog specifications. Whether the transport corridor is passable, whether the ground bearing capacity is sufficient, and whether the power supply, grounding, ventilation, fire protection, and maintenance space meet the requirements should all be confirmed during the selection phase. Entrance dimensions, thresholds, turning spaces, and emergency evacuation routes should also be tailored to the actual users and staffing arrangements.

Finally, the model, normal working pressure, maximum allowable working pressure, pressure relief setting, pressurized medium, breathing gas, complete configuration, intended use, target market approval and installation conditions provided by the supplier are aligned item by item. Any missing critical fields should be marked as “Insufficient Information”; do not compensate by offering higher pressure, more configurations, or a lower price.