Our Certifications at Keystone Heating & Air Conditioning Co., Inc We’re dedicated to providing the Racine community with the most responsive heating and cooling service possible. To ensure our expertise, we’ve participated in rigorous training to receive the industry certifications you see below. Find out more about our certifications here and give us a buzz at 262-358-9468 to speak directly with our representatives. North American Technician Excellence (NATE) NATE is North America’s largest non-profit heating, ventilation, air conditioning and refrigeration certification organization. NATE certified technicians provide superior installation and maintenance on your heating and cooling systems. These technicians have verified their knowledge in the HVAC specialty areas including: Air conditioning Air distribution Heat pumps Gas heating Oil heating Hydronics gas Hydronics oil Ground source heat pump loop installer Senior HVAC Efficiency Analyst Dave Lennox Premier Dealer™ Dave Lennox Premier Dealers™ are specially trained and independently evaluated regularly to offer a higher level of customer service. As a Dave Lennox Premier Dealer™, our team in Racine has partnered with Lennox®, a top name in home comfort, to provide some of the most innovative and energy efficient heating and cooling products in the industry. To keep “Premier” status, Keystone Heating & Air Conditioning Co., Inc participates in an independent Customer Review program that encourages our clients to honestly rate our performance so we can make sure our staff continuously is meeting or exceeding the highest standards for quality service. SMACNA The Sheet Metal and Air Conditioning Contractors' National Association is an international trade association. SMACNA members perform work in industrial, commercial, institutional, and residential markets. They are a leader in promoting quality and excellence in the sheet metal and air conditioning industry.