Founded in 1995, Critical Environment Technologies Canada Inc. (CETCI) is a well-established, leading global manufacturer of gas detection systems, including self-contained systems, controllers and transmitters, and Indoor Air Quality (IAQ) monitors.

In early 2007, YES Environment Technologies Inc. was merged with its larger mother company, CETCI, and operates under the CETCI name. The merger allowed for more resources to invest into product development, marketing and service. YES and CETCI products are sold through a network of authorized distributors around the world.

CETCI’s permanently installed, stationary gas detectors and gas detection systems provide continuous monitoring for potential leaks, flexible field configurations and robust functionality. Some of the most commonly detected gases are Carbon Monoxide, Carbon Dioxide, Nitrogen Dioxide, Nitric Oxide, Ammonia, Chlorine, Ozone, Combustible Gases like Methane and Propane, Oxygen, Refrigerants and more. Our self-contained systems, controllers and transmitters (analog and digital) are installed in commercial HVAC, institutional, municipal and industrial markets worldwide. Many of these applications are for vehicle exhaust, but areas of specialization include refrigeration plants, commercial swimming pools, water purification, arenas, wineries and breweries, waste water treatment and many more. Ongoing product development ensures that CETCI’s equipment is at the leading edge of a rapidly evolving technology.

Our YES brand IAQ monitors are designed for short or long term indoor air quality monitoring and include temperature and humidity measurements and data logging. They are easy to carry and have the capability of monitoring multiple gases at the same time. The YES Viewer Software allows users to analyze and graph data.

CETCI has a strong commitment to customer satisfaction, safety and environmental protection. Our mission is to manufacture high quality gas detection systems and provide our customers with cost effective, functionality savvy equipment. Our expert sales team is dedicated to working with you to find the right solution for your particular application. How can we help you?