Heating, air conditioning, and refrigeration mechanics and installers typically do the following:
Heating and air conditioning systems control the temperature, humidity, and overall air quality in homes, businesses, and other buildings. By providing a climate-controlled environment, refrigeration systems make it possible to store and transport food, medicine, and other perishable items.
Some HVACR technicians specialize in one or more specific aspects of HVACR, such as radiant heating systems, solar panels, testing and balancing, or commercial refrigeration.
When installing or repairing air conditioning and refrigeration systems, technicians must follow government regulations regarding the conservation, recovery, and recycling of refrigerants. The regulations include those concerning the proper handling and disposal of fluids and pressurized gases.
Some HVACR technicians sell service contracts to their clients, providing periodic maintenance of heating and cooling systems. The service usually includes inspecting the system, cleaning ducts, replacing filters, and checking refrigerant levels.
Other workers sometimes help HVACR technicians install or repair cooling and heating systems. For example, on a large air conditioning installation job, especially one in which workers are covered by union contracts, ductwork may be installed by sheet metal workers, electrical work by electricians, and pipework by plumbers, pipefitters, and steamfitters. Boiler systems are sometimes installed by a boilermaker.
Home appliance repairers usually service window air conditioners and household refrigerators.
Many HVACR technicians receive postsecondary instruction from technical and trade schools or community colleges that offer programs in heating, air conditioning, and refrigeration. These programs generally last from 6 months to 2 years and lead to a certificate or an associate’s degree.
High school students interested in becoming an HVACR technician should take courses in vocational education, math, and physics. Knowledge of plumbing or electrical work and a basic understanding of electronics is also helpful.
The U.S. Environmental Protection Agency (EPA) requires all technicians who buy, handle, or work with refrigerants to be certified in proper refrigerant handling. Many trade schools, unions, and employer associations offer training programs designed to prepare students for the EPA certification exam.
In addition, some states and localities require HVACR technicians to be licensed; check with your state and locality for more information.