Custom Controls Co. is a Houston, Texas-based industrial HVAC equipment manufacturer specializing in hazardous-location, explosion-proof, and industrial-grade heating, cooling, ventilation, and environmental control solutions. The company has been providing specialized HVAC equipment for industrial applications since the 1960s, with products designed for demanding environments where safety, reliability, and durability are essential.

Its product range includes hazardous-location air conditioners, explosion-proof HVAC systems, building pressurization units, industrial heaters, exhaust fans, purge blowers, packaged air conditioners, refrigeration systems, dehumidifiers, split systems, and chemical filtration systems. Custom Controls Co. provides customized solutions for both U.S. NEC applications and international IEC/ATEX requirements.