Grand Vessel of Power Pro: A Session Day in Our 2.5 ATA Hardshell

Some chambers whisper "nice." The Grand Vessel of Power Pro clears its throat and says "let's work." It is our highest-pressure chamber: a hardshell lay-down that adjusts from 1.3 all the way to 2.5 ATA, with a second oxygen concentrator in the box from day one. Today we skip the brochure voice and walk through what a session day actually looks like, from the moment you open the door to the moment you climb out and stretch.

Step one: the room is already ready

A Grand Vessel Pro lives on a dedicated 110V, 20A outlet, and it is a substantial piece of steel, roughly 2,000 lb depending on options, with a footprint of about 90 by 48 inches. That is why we plan the room before the truck ever leaves Holiday, Florida. Delivery and installation are coordinated by our in-house team, so on session day there is nothing to figure out. The chamber sits level, the hoses are routed clean, and the power is where it should be.

The shell itself is precision-welded, multi-thickness stainless steel with aluminum ring reinforcement, rated for 2.5 ATA continuous operation. You feel that the first time you rest a hand on it. Solid, quiet, not going anywhere.

Step two: climb in and actually stretch out

The interior is the part people underestimate. You get 79 inches of length, 34 inches of width and 60 inches of height inside. Taller owners lie flat without curling up, and nobody feels like they are climbing into a tube. Aviation-grade, dual-layer polycarbonate windows at the head and foot keep the space bright and open, so the room you just set up stays part of the experience.

The smart door safety sensor is the first quiet hero of the session. The chamber operates only when the door is fully sealed. No guesswork, no "is it closed?" moment.

Step three: pressure, oxygen and a voice on the line

Here is where the Pro earns its name. Pressure is adjustable from 1.3 to 2.5 ATA, set through dual digital control panels, one inside and one outside, both with HD displays. Whoever is running the session and whoever is inside see the same numbers at the same time.

Oxygen comes from two 10 LPM concentrators working together for 20 LPM total, with up to 95% FiO₂ through a non-rebreather mask. On most chambers that second concentrator is an upgrade you add later. On the Grand Vessel Pro, it ships with the chamber.

The HD phone intercom keeps the conversation easy. Need the session operator? Pick up the handset. It is a small detail that makes a long session feel calm and connected rather than isolated.

A quick brass-tacks note: higher pressures are typically used in clinical and advanced wellness settings. Prestige is a wellness company, not a medical facility, and any higher-pressure protocol belongs under the guidance of a qualified provider. Our job is to make sure the equipment and the training are ready for whatever plan you and your provider choose.

Step four: the comfort systems doing the quiet work

Sessions run long, so comfort matters. Built-in electric air cooling and dehumidification keeps the interior pleasant without maintenance-heavy ice boxes. Anion PM2.5 air purification and nano-water sterilization keep the air feeling fresh, and the panels track O₂ purity, temperature and humidity in real time. You are not guessing whether it is getting stuffy in there. You can see it.

Step five: coming back to 1 ATA, gently

Every session ends the same calm way. Triple relief valves (primary, backup and emergency) stand guard over pressure the entire time, and if the power ever drops, the chamber depressurizes automatically and gently. Layers, not luck. That is the philosophy behind every hardshell we sell.

Make it yours

Owners like to personalize. Popular companions for the Grand Vessel Pro include the Premium Oxygen Analyzer for checking delivered oxygen, a grounding blanket or sheet, the Red Light Rod 0.69, and our OxySafe chamber air purge system, built to the NFPA 99 Chapter 14 requirements for chamber air, for facilities, insurers or landlords who ask about NFPA 99. Coverage options include extended parts and labor warranty and a maintenance service plan. The standard warranty is 3 years or 1,000 hours for residential use, and 1 year or 1,000 hours for commercial use.

A word on electronics

Because this chamber includes built-in powered systems and pairs with add-ons like the Red Light Rod, here is our standing position. Any chamber-installed electronics or powered accessory, including red light, LED or PEMF, is used at the customer's own risk. Prestige never claims any electronic device is 100% safe in an oxygen-enriched environment, and we never endorse personal electronics such as phones, laptops or watches inside a chamber. Read our full position on the electronics disclaimer page.

Why it comes from Prestige

We are real technicians in a real workshop. We design our own improvements, keep parts on the shelf, and train every owner until the session routine feels second nature. The Grand Vessel of Power Pro is $75,000 with dual concentrators included, and you can see the full specifications on the Grand Vessel of Power Pro product page.

Buy from Prestige, get supported by Prestige forever—the same team who built it and installed it. Book a showroom session, browse hyperbaric chambers, or call (727) 591-4268 to talk with the team.