About INTEC Controls. INTEC Controls is a premier, global provider of gas detection systems and peripherals for the HVAC Controls, Energy Management, and Building Automation markets. Our industry-leading products feature independently-certified toxic, combustible, and refrigerant sensors and controllers, meeting rigorous standards for reliability, safety and energy efficiency. As a brand of Building Controls & Solutions, INTEC Controls boasts over a hundred years of combined HVAC/R industry experience. Expertise that is turnkey!