What ATA Means When Choosing a Home Chamber

ATA means atmospheres absolute, a measurement of pressure relative to normal atmospheric pressure at sea level. A 1.3 ATA chamber operates at 1.3 times normal atmospheric pressure. A 1.4 ATA chamber operates at 1.4 times normal atmospheric pressure. It is a useful technical specification, but it is not the whole buying decision.

ColdCraft’s current home chamber selection is 1.3 and 1.4 ATA. The models differ in far more than that rating: diameter, length, seated versus reclined format, entry design, price, warranty, and prescription requirement. This guide explains what ATA tells a buyer and where the real differences appear. It is an equipment guide, not medical advice or a session protocol.

ATA in the ColdCraft home chamber selection

Brand and model range	ATA	What changes between models	Purchase requirement
Summit to Sea Shallow Dive, Dive, and Grand Dive range	1.3 ATA	Diameter, length, horizontal or vertical format, entry, and price	Valid prescription required before shipping
OxyNova 5 and OxyNova 7	1.4 ATA	Diameter, length, windows, compressor specification, and price	No prescription required
OxyNova 8 and OxyNova 9	1.3 ATA	Larger diameter, length, interior room, and price	No prescription required

This is why ATA alone does not select a chamber. A 1.3 ATA Summit to Sea and a 1.3 ATA OxyNova can have different interior dimensions and different prescription requirements. A 1.4 ATA OxyNova 5 and 7 differ from each other in size and price. The right model begins with the complete device and the buyer’s actual room.

What ATA tells you

ATA describes the chamber’s rated operating pressure. It does not tell a buyer whether the chamber is horizontal or vertical, whether it will fit through the home, how spacious the interior will feel, whether it needs a prescription before shipping, or which entry format is appropriate. Those are separate specifications and they are usually more important to the day-to-day ownership decision.

Buyers often see several ATA ratings online and assume the highest number is automatically the best choice. ColdCraft does not carry a 1.5 ATA home chamber in its current primary selection. The current selection clusters at 1.3 and 1.4 ATA, where the meaningful comparison is the format, dimensions, purchase requirement, and price of each actual model.

Summit to Sea: 1.3 ATA, different formats

The Summit to Sea Shallow Dive is a 1.3 ATA, 26-inch diameter horizontal chamber. The Dive is also 1.3 ATA but expands to 33 inches in diameter and 90 inches in length. The Dive Vertical remains 1.3 ATA but changes the configuration to a 40-inch seated format.

For a buyer, those physical differences are more decisive than comparing the identical ATA label across the products. The compact Shallow Dive may work when the available room is tight. The Dive offers a larger horizontal interior. The Dive Vertical changes the question to seated entry and ceiling height. The larger Grand Dive models add more diameter and require more deliberate room planning.

OxyNova: 1.3 and 1.4 ATA within one lineup

The OxyNova 5 and OxyNova 7 operate at 1.4 ATA, with 22-inch and 28-inch diameters. The OxyNova 8 and OxyNova 9 operate at 1.3 ATA and increase to 33-inch and 36-inch diameters.

That does not create a simple 1.4-versus-1.3 ranking. OxyNova 5 and OxyNova 7 are different in interior room and length despite sharing the same 1.4 ATA rating. OxyNova 8 and OxyNova 9 are different in diameter, length, and price despite both operating at 1.3 ATA. Buyers should choose the size and format that fit the room, then review the exact device specification.

Prescription status is not determined by ATA

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 pressure rating alone.

This is a central purchase distinction. A buyer should not infer that all 1.3 ATA chambers have the same requirements. The actual product page and manufacturer information control the purchase path.

What to compare after ATA

• Format: horizontal reclined or vertical seated.
• Diameter and length: the interior room and the total equipment footprint.
• Entry: the opening style and clearance available around it.
• Room and delivery route: the path from curbside to final placement, not only the empty floor area.
• Compressor and power: the manufacturer’s placement and electrical requirements.
• Purchase path: current price, freight, warranty, and prescription requirement.

These questions turn ATA from a marketing shorthand into a useful part of a complete equipment comparison. A buyer who knows the room, desired format, and purchase requirement can usually narrow the catalog to one or two real options quickly.

How ColdCraft helps buyers compare chambers

ColdCraft helps buyers compare the 1.3 and 1.4 ATA home chamber options that fit the actual room and purchase path. Start with the room brief, including the intended location and access constraints. You can also call (833) 842-9329 or email support@coldcraftrecovery.com. For medical suitability and use of a prescription device, consult the prescribing clinician and follow manufacturer instructions.

Frequently asked questions

What does ATA mean in a home chamber?

ATA means atmospheres absolute, a pressure measurement relative to normal atmospheric pressure at sea level. It is one technical specification among many on a chamber product page.

What ATA chambers does ColdCraft carry?

ColdCraft’s current home chamber selection includes 1.3 ATA Summit to Sea models and 1.3 or 1.4 ATA OxyNova models. Compare the exact product specification, dimensions, and purchase requirement for the model being considered.

Do 1.3 ATA chambers require a prescription?

ATA 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 compare besides ATA?

Compare the exact device’s construction, diameter, length or height, entry style, room footprint, delivery path, electrical needs, warranty, freight, and prescription requirement.