About Us

As the largest independent commercial gas detection manufacturer in North America, Critical Environment Technologies (CET) designs, manufactures, and services gas detection and indoor air quality systems. Our mission Safer Air Everywhere has never been more important and drives our world‑class team to do amazing work. Our devices are installed in commercial HVAC, institutional, municipal, and industrial applications including parking facilities, refrigeration plants, commercial swimming pools, water purification plants, arenas, wineries, breweries, wastewater treatment plans, and cannabis production facilities. Ongoing R&D ensures that CET’s equipment is at the leading edge of a quickly evolving space and that we have a strong commitment to customer satisfaction, safety, and environmental protection.

Our small, collaborative team is passionate about our mission. Our culture is shaped by five simple values: staying curious, giving feedback about ...