An air management system for an insulated spa cabinet is provided. The air management system monitors the temperature of an equipment air space in the cabinet and vents overheated air in a controlled manner from the cabinet. The air management system comprises an air passageway, formed by a U-trap, between an inlet in the air space and an exterior of the cabinet. The system also comprises an air mover and a sensor. The sensor monitors the temperature in the air space and when the temperature is above a set temperature threshold, the air mover is operated to direct air from the air space through the passageway from the inlet to the discharge for controlled venting of overheated air.