Refrigerant gas is considered a toxic gas and although refrigerants have low toxicity, at high concentrations they can displace oxygen. That's why you want to detect leaks at the earliest level.

MSA's patented Photoacoustic Infrared (PAIR) sensing technology provides continuous, real-time monitoring down to 1 part-per-million (ppm). This early response to HVAC refrigerant gas leaks allows maintenance crews to respond more quickly and to avoid the consequences and costs of hazardous gas leaks.