Maintains, inspects and installs all heating, air-conditioning and refrigeration equipment, fans, vacuum pumps, air compressors, vents, ducts, and pneumatic and DDC control systems on the university campus Rotates weekend shifts to take call for emergency service calls including repairs beyond normal work hours as required. Maintains, inspects and installs all heating, air-conditioning and refrigeration equipment, fans, vacuum pumps, air compressors, vents, ducts, and pneumatic and DDC control systems on the university campus.