NATE-certified technicians have demonstrated their knowledge of today’s increasingly sophisticated heating and cooling systems by passing a nationally recognized test developed and supported by all segments of the heating, ventilation and air-conditioning industry. Consumers can rest assured that with a NATE-certified technician, they are getting the best installation and service for maximum comfort and economy in their heating and cooling system. Better installation and service mean a longer life for your heating and cooling equipment and increased energy efficiency. Technicians who are NATE-certified know that NATE stands for excellence and quality service.