Minimum Qualifications Successful completion of a NYS two-year Service & Repair Mechanic (HVAC-R) Traineeship or NYS two-year refrigeration repair and maintenance training program; OR successful completion of any equivalent refrigeration two-year training or apprenticeship program;* OR four (4) years of full-time experience in the mechanical or electrical trades under a skilled journey-level mechanic or electrician which would provide training equivalent to that given in an apprenticeship program, one (1) year of which must include both training and work in the operation and maintenance of commercial type refrigeration or air-conditioning equipment. The types of equipment Service & Repair Mechanics (HVAC-R) work with include ammonia brine, freon, carbon dioxide, sulphur dioxide, methyl chloride and lithium bromide units, absorption cold generators, all types of coolers, refrigerators and freezers, air-conditioning units and systems, humidifiers, compressors, ventilators, cooling towers, and other related equipment.