Hoffman Vortex A/C Enclosure Coolers for hazardous locations keep electrical equipment cool, clean and protected with compressed air at 900 BTU (264 W) up to 5000 BTU (1465 W) per hour. Few moving parts mean coolers require little to no maintenance, while top, side and front mounts provide flexibility in installing coolers in confined areas. These coolers are suitable for environments with ambient temperatures at or below 80 degrees C (175 degrees F). Accompanying thermostats for hazardous locations can provide low and high temperature alarms. They feature direct connect and switch capabilities without additional relays, and a compact design with high switching capacity.