Abstract: This invention relates to a novel self-contained hyperbaric chamber. More particularly, this invention pertains to a hyperbaric chamber which contains all necessary gas processing equipment, conserves gas pressures and recovers oxygen from the waste gas. A self-contained hyperbaric chamber comprising: (a) a sealed gas chamber; (b) a first housing sealed from the sealed gas chamber; (c) a first air compressor within the first housing for withdrawing air from atmosphere and compressing the air for delivery to the interior of the sealed chamber; (d) a second housing sealed from the sealed gas chamber; and (e) a second compressor within the second housing for compressing air withdrawn from the interior of the sealed chamber and delivering the compressed air to an oxygen enriching molecular sieve and directing recovered oxygen enriched gas to the interior of the sealed chamber.