Our Certifications at Custom Sheetmetal & Roofing, Inc. Our team at Custom Sheetmetal & Roofing, Inc. in Topeka strives to have the finest heating and cooling service around. One way we sustain our expertise and continue to expand our knowledge of HVAC products is by earning industry certifications. Learn more about the certifications our professionals have received below. 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 outstanding installation and maintenance on your heating and cooling systems. These technicians have demonstrated 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 Topeka has partnered with Lennox®, a top name in home comfort, to offer some of the most innovative and energy efficient heating and cooling products in the industry. To keep “Premier” status, Custom Sheetmetal & Roofing, Inc. is involved 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.