On the other hand, there are states which demand from technicians to demonstrate their knowledge through tests before putting it into practice.
In addition, such an organization which is certifying technicians is the North American Technical Excellence (NATE).
The HVAC Excellence is also another agency accredited among the rest in the industry. After completing a course or an apprenticeship, a technician takes the exam and becomes certified.
This Excellence is providing technicians with an HVAC certification as proficient and highly qualified of the trade.
Besides the NATE and HVAC Excellence, there is also a federal certification that an HVAC technician must obtain.
HVAC technicians must be certified by the Environmental Protection Agency (EPA) in order to purchase refrigerants or dispose of them.
