A system for cooling a pressurized hyperbaric chamber without pressure change includes an air compressing unit, an air cooling unit, and an air discharging hose. The pressurized hyperbaric chamber, the air compressing unit, the air cooling unit, and the air discharging hose are in fluid communication with each other. A flow of output warm air from the pressurized hyperbaric chamber is withdrawn and discharged into the air cooling unit by the air compressing unit. A heat exchanger of the air cooling unit then removes heat energy from the flow of output warm air to convert the flow of output warm air into a flow of input cold air, as the heat exchanger is in fluid communication with stored ice water within an insulated reservoir of the air cooling unit. The flow of input cold air is then discharged back into the pressurized hyperbaric chamber through the air discharging hose.
