Traditional Refrigerants

Large refrigerant releases can displace oxygen to immediately dangerous levels. In enclosed or low lying areas, leaked refrigerants can accumulate and reduce oxygen levels, leading to asphyxiation risks, while high concentrations can cause dizziness and other health effects. Leaks are expensive and can also cause equipment damage and operational issues. Because these risks are tied to concentration rather than ignition, modern safety approaches focus on early leak detection, ventilation, and system controls to prevent hazardous conditions from developing. Detection requirements are defined by installation and safety standards: ASHRAE 15-2024 establishes refrigerant concentration limits (RCL) and requires detection in spaces where those limits could be exceeded and in machinery rooms with ventilation and alarms, while CSA B52:23 mandates refrigerant vapour detection in machinery rooms with automatic response. EPA Section 608 requires leak detection and repair. Workplace safety frameworks such as OSHA (29 CFR 1910.146 and 1910.1000) further require atmospheric monitoring to maintain safe oxygen levels, with ACGIH and NIOSH guidelines informing acceptable exposure thresholds. Early detection prevents both safety incidents and costly refrigerant loss.