Explosion Proof HVAC – Severe Duty HVAC – Hazardous Area HVAC Building the world's best since 1974

Specific Systems® is the leading manufacturer of third-party certified Explosion Proof HVAC, Explosion Proof Air Conditioning, Severe Duty HVAC and ATEX HVAC Systems for the petrochemical, telecommunications, military, and other difficult environments.

Since 1974, Specific Systems® has shipped thousands of special purpose air-conditioning, heating, ventilating and pressurization systems with a commitment to reliability, service and design excellence. Specific Systems® specializes in building the best severe duty and explosion proof HVAC in the world. This has been accomplished through proven engineering and design principles, combined with a dedication to continued improvements in our standard modular HVAC products. With this strong engineering focus, Specific Systems® leads the industry in hazardous area environmental control system technology. You can always depend on Specific Systems® to perform to full capacity.

We combine our expertise in HVAC with our knowledge of hazardous areas to provide packaged solutions to highly corrosive and hazardous (up to Class I, Division 1, Groups C and D) locations. Our InPac line is available in several formats to fit the needs of individual applications:

Vertical, through-the-wall (standard)

Horizontal, roof-mount

Split condenser/evaporator

Pad mount

Our AirPak wall-mount industrial HVAC systems are available in capacities from 5–20 tons with a variety of optional equipment.

Specific Systems® is a privately held company, and our focus is on our customers—not shareholders. We ensure a level of service after the sale that is second-to-none.