Steamfitters doing refrigeration and service work will install, maintain, troubleshoot, diagnose and service systems for heating, ventilation, air conditioning and refrigeration. You could work in a variety of industries on equipment and controls for piping systems that carry water, steam, chemicals, compressed air, liquid gasses or fuel. You’ll learn about blueprint reading, specifications and rigging equipment. You’ll also learn how to measure, cut, bend, prepare and join all types of pipe. Your training will cover pressure testing for leaks, as well as the detection of problems in electronic, pneumatic, digital, electrical, software or programmable logic controls. This apprenticeship involves both classroom and on-the-job training over a five-year period.