HVAC training is essential to work in this profession. Nowadays, employers prefer to hire HVAC technicians who have completed an HVAC training program, though it is possible to learn the trade through an apprenticeship.

Technical schools, vocational schools, distance learning schools, and community colleges all offer HVAC training. The length of an HVAC training program varies depending upon the school, but programs typically last between six months and two years.

HVAC training usually includes instruction in the theory and design of heating, air conditioning, ventilation, and refrigeration systems. Students also learn about safety practices, equipment construction, installation, maintenance, and repair.

An apprenticeship under a licensed HVAC technician usually occurs after completing an HVAC training program. This hands-on experience is an important part of the HVAC training process. Apprenticeships typically last between six months and two years, but more formal apprenticeships may last as long as five years.

After completing HVAC training and an apprenticeship, HVAC technicians can become certified to work with specific types of equipment or material, such as residential heating and cooling systems, commercial heating and cooling systems, oil burning furnaces, and refrigerants.

In addition to training and certification, HVAC technicians should also be able to logically assess situations and act accordingly. Technicians should also be able to safely and effectively operate power tools and hand tools.

Most HVAC technicians work for contractors, while others work for government, commercial, and industrial organizations. About fifteen percent of HVAC technicians are self-employed owning their own shop or HVAC business.