3 Must-have HVAC Certifications for Top Techs 1 NATE Certification. The North American Technician Excellence (NATE) certification is the gold standard for technicians. … 2 HVAC Excellence Certification. … 3 EPA 608 Certification. … 4 State Licensing for HVAC/R Technicians. … 5 Becoming an HVAC/R Technician. …
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