Certification for Heating, Ventilation, Air Conditioning & Refrigeration Technicians

North American Technician Excellence


About us

North American Technician Excellence (NATE)

is the nation’s largest nonprofit certification organization for heating, ventilation, air conditioning and refrigeration (HVACR) technicians. NATE tests represent real-world working knowledge of HVACR systems and validate the professional competency of service and installation technicians. Contractors, manufacturers, distributors and educators across the industry partner with NATE to develop knowledgeable, competent HVACR technicians. Home and business owners choose HVACR contractors who employ NATE-certified technicians to get repairs done right – the first time.
Testing Organizations


This entry-level exam, available online, is designed for technicians who are just entering the HVACR field with little to no formal education or training. A study guide which focuses on the fundamental job knowledge and skills needed in the HVACR workforce is included.

HVAC Support Technician Certificate

Designed for technicians who have worked in the field for 6-12 months. The exam covers topics linked to the NATE professional level certifications, but at a more fundamental level.
Recertification Application

NATE Certification:
Core & Specialty Tests

Technicians with 2 or more years of HVACR experience can earn installation or service certification in one or more of the specialty areas offered by NATE. Certification requires that the technician passes both the core exam and an installation or service exam.

Senior Level Efficiency Analyst

This is the highest certification offered by NATE. Technicians choosing to earn senior level certification must hold two NATE service certifications (one heating and one cooling) before taking the exam.