Understands basic refrigeration cycle to include identifying components in refrigeration circuit, understanding how each component works, diagnosing problems in the refrigeration circuit, using manifold gauge set, pressure/temperature chart and temperature measuring devices for routine maintenance and to troubleshoot. Summary of Job: Primarily responsible for performing repairs and maintenance to a variety of equipment including refrigeration, air conditioning, electric motors, heating units, heat pumps, compressors, light commercial furnaces, boilers, burners, intake and exhaust fans, economizers and humidifiers.