The primary purpose of this position is to install, maintain, repair, and modify large/complex heating (includes heating boilers and single and multiple fuel power boilers), ventilation, air conditioning and refrigeration (HVAC/R) systems and support equipment including mechanical system controls and distribution lines. Skill in dismantling, repairing, and reassembling pumps, impellers, compressors, chillers, receivers, and evaporators to include balancing, aligning, and maintaining turbines, pumps, generators, and ash shredding equipment and preheaters; troubleshooting complex problems on large projects; and applying prescribed test procedures.