Optional · 1 of 3
Certifications that open doors
Federal refrigerant certification
Not optional if you touch refrigerant. The test covers a core section plus Type 1 small appliances, Type 2 high-pressure systems and Type 3 low-pressure systems. Techs who pass all of them are usually called universally certified.
North American Technician Excellence certification
A national nonprofit certification for this trade. Many employers and customers look for it.
Commercial refrigeration
Supermarkets, cold storage and restaurants. Fewer techs can do it, and the calls never stop.
Controls and building automation
The computer side of big heating and cooling systems.
Contractor license
The state credential that lets you pull permits and run your own company.