Summit to Sea Grand Dive review

The Grand Dive is the roomiest chamber we compared. At 40 inches across you can sit up, lie on your side and move without brushing the walls, which no other chamber here allows.

Summit to Sea publishes a clear price table ($13,995 plus $375 shipping), says its chambers are FDA cleared and covers every part, zipper and seam for two years.

You will need to source oxygen yourself, and the two-year warranty is short for the money unless you pay for the extension.

Best for: the most room inside: a 40-inch soft chamber you can sit up in.

Summit to Sea is one of the few brands that just tells you. Its June 2025 price table, still the one linked from the pricing page today, lists the Grand Dive at $13,995 with $375 shipping in the 48 contiguous states. Military, first responders and firefighters get 10% off. The extended warranty adds one to three years from $1,400. The phone line is 1-877-PSI-DIVE if you want to talk to a person before ordering.

At 40 by 90 inches the Grand Dive is a different experience from a 27- or 32-inch tube. You can sit up against the bolsters, turn freely and get in without folding yourself. The kit includes a frame, foam mat, four foam bolsters, two viewing windows, two auxiliary valves and a carrying case, and the chamber weighs 50 lb. Two redundant compressors run on a standard outlet, so if one fails the other keeps pressure.

Summit to Sea says: "Summit to Sea hyperbaric chambers are FDA cleared." The matching FDA 510(k) summary, K072757, lists the indication as acute altitude sickness, as prescribed by or under the direction of a physician. Read that as the legal scope of the device. Anything beyond it is a question for your doctor, not for a chamber brand.

$13,995 from the Summit to Sea price table. Official price table: $13,995 plus $375 shipping in the 48 contiguous states. 10% off for military, first responders and firefighters.

Shipping: $375 within the 48 contiguous states (Summit to Sea).

Oxygen: No oxygen concentrator listed in the Grand Dive features or price table.

Prices move. The button below opens Summit to Sea's page so you see today's number before you decide.

Summit to Sea states FDA 510(k) clearance (K072757): "Summit to Sea hyperbaric chambers are FDA cleared."

The FDA 510(k) summary lists the indication as: Acute altitude sickness, as prescribed by or under the direction of a physician (FDA 510(k) summary K072757).

Safety hardware stated: Double vent system capped at 4.4 psi, redundant compressors, double-sided zippers that open from inside or outside.

• Operable from inside: stated
• Emergency release: not stated on the page we read
• Pressure relief valves: stated
• Internal gauge: not stated on the page we read

This is not medical advice. A hyperbaric chamber is a medical device: talk to your doctor before you buy or use one, and follow Summit to Sea's instructions. Our safety guide covers the FDA's latest advice.

Head-to-heads: Grand Dive vs Vitaeris 320 · Grand Dive vs Skybaric Lounge

Ranked in: Best portable hyperbaric chamber for home

Related guides: How to choose · Soft vs hard shell · Safety at home