Environmental Service Technician/ HVAC Installer Technician Apprenticeship

Work Description

Heating, air-conditioning, and refrigeration sInstalling_heating_systemystems consist of many mechanical, electrical, and electronic components, including motors, compressors, pumps, fans, ducts, pipes, thermostats, and switches. In central heating systems, a furnace heats air that is distributed throughout the building by a system of metal or fiberglass ducts. Technicians must be able to maintain, diagnose, and correct problems throughout the entire system. They may adjust system controls to recommended settings and test the performance of the entire system using special tools and test equipment. The work involves installing ductwork, and installing and wiring environmental control systems.

Working Conditions

Work is performed both indoors and outdoors in work spaces ranging from outside on scaffolding to crawl spaces inside walls. Work requires physical stamina with considerable bending, lifting, carrying, pushing, and pulling.


  • 5 year training program
  • 9,000 hours on-the-job training
  • 560 hours paid related instruction
  • (hours of paid and unpaid related instruction combined shall not be less than 730 hours)
  • Apprentices must complete Red Cross First Aid Training course
  • Apprentices must in his/her final year complete the Transition-To-Trainer Course
  • Additional related instruction may be required

Courses include blueprint reading, mathematics, electrical code requirements, and safety and first aid practices.

You can find more information on the Department of Workforce Development of Wisconsin Web page.