Not all hyperbaric chambers deliver the same results. The pressure level - measured in ATA - determines therapeutic depth, clinical application, and outcomes. This guide compares every major HBOT pressure level (1.4, 1.5, 1.8, 2.0 and 2.5 ATA), backed by peer-reviewed research. Discover which ATA level suits your goals, whether you're a home user, athlete, or clinic owner.