Technicians may work for large or small contracting companies or directly for a manufacturer or wholesaler. Those working for smaller operations tend to do both installation and servicing, and work with heating, cooling, and refrigeration equipment. Training Because of the increasing sophistication of heating, air-conditioning, and refrigeration systems, employers prefer to hire those with technical school or apprenticeship training. A sizable number of technicians, however, still learn the trade informally on the job. Although employment is projected to increase slowly, job opportunities should be excellent due to low numbers of people training in the field.
Training is usually through a four - five year apprenticeship program.
Plumbers and pipefitters are one of the larger, as well as higher paid, construction occupations. Most people are familiar with plumbers who unclog drains or install appliances. In addition to these activities, plumbers and pipefitters install, maintain, and repair many different types of pipe systems. Although plumbing and pipefitting are sometimes considered a single trade, workers generally specialize in one or the other. Plumbers install and repair the water, waste disposal, drainage, and gas systems in residential, commercial and industrial buildings.