As a Maintenance Craft Trade - HVAC Mechanic, a typical day might include the following: Maintaining and repairing air conditioning, refrigeration, and heating equipment, including split A/C systems, rooftop units, walk-in refrigerators and freezers, ice machines, and electronic controls. The Maintenance Craft Trade - HVAC Mechanic role may be the perfect fit for you if you enjoy troubleshooting complex mechanical systems, thrive in a fast-paced environment, and take pride in work that makes a meaningful impact.