Why Integrate Gas Detection into BMS, BAS or PLC Systems?
Integration with BMS, BAS or other type of control system enables automated ventilation and safety controls and ensures responsive facility management.
Read full article
30 Years of Excellence
Safer Air
Everywhere.
Industry-leading gas detection systems protecting parking garages, warehouses, data centers, chiller rooms, and hundreds of other critical environments.
Leader in Gas Detection
Protecting critical environments across diverse industries with cutting-edge detection technology.
Parking Garages
Learn more
Warehouses
Learn more
Data Centers
Learn more
Ice Arenas
Learn more
Boiler Rooms
Learn more
Hospitals
Learn more
Schools
Learn more
Hotels
Learn more
Welding Shops
Learn more
Waste & Recycling
Learn more
MRI Rooms
Learn more
Grow Rooms
Learn more
Wineries
Learn more
Vehicle Service Bays
Learn more
Indoor Air Quality
Learn more
Our Products
Industry-leading equipment from single, standalone gas detectors to complex, multichannel detection systems.
Controllers
Intelligent control systems for comprehensive facility management
Explore Controllers
Gas Detectors & Sensors
Advanced gas detection and sensing solutions for critical environments
Explore Gas Detectors & Sensors
Remote Devices & Peripherals
Connected devices for extended monitoring and control capabilities
Explore Remote Devices & Peripherals
Critical Environment Technologies
Critical Environment Technologies (CET) is the largest independent commercial gas detection manufacturer in North America. We've developed more than 100 different products that are sold in all states & provinces and can be found in more than 20 countries globally. Ongoing product development ensures our equipment is at the leading edge of a rapidly evolving space. We maintain a strong commitment to customer satisfaction, health, safety and environmental protection.
Why CET?
- Safe: Experts in Gas Detection
- Reliable: Products That Just Work
- Service: Leading in Customer Support
- Simple: Easy to Install & Maintain
Latest from CET
Stay updated with company news, product announcements, and industry insights.
Why Gas Detection Matters in Places Meant for Play
While guests are focused on their laps around the pool or personal bests on the treadmill, gas detectors are focused on something else entirely: the air they are breathing.
Read full article
Hidden Air Quality Risks in Transit Environments
Beneath busy cities and inside bus terminals, even small concentrations of CO, NO₂ can accumulate quickly, creating hidden air quality risks that most commuters never see coming.
Read full article