Noren Thermal Solutions manufacture air-to-air and air-to-water heat exchangers that remove heat from sealed electronic enclosures, panels & cabinets for indoor & outdoor applications. Our units are 10 times more efficient than air conditioning, with little to no maintenance. Nema 12 units are stock items. NEMA 4, 4X & SS. Hazardous location units are available for purged & non purged systems.