Certifications at Klaus & Sons Heating & Air Conditioning We’re committed to providing the Upland community with the most responsive heating and cooling service around. To do so, we’ve completed rigorous training to receive the industry certifications you see below. Discover more about our certifications here and give us a shout at 909-982-5698 to speak with one of representatives in person. North American Technician Excellence (NATE) NATE is North America’s largest and most prestigious certification in the HVAC industry. NATE certified technicians have mastered the installation, service and maintenance procedures of heating and cooling products and can earn recognition in these areas of specialty: 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™ To receive status as a Dave Lennox Premier Dealer™, Klaus & Sons Heating & Air Conditioning in Upland was trained and is routinely independently evaluated to ensure we provide an unmatched level of customer service. We’ve partnered with Lennox®, a leading name in home comfort, to offer some of the best heating and cooling products in the industry. We maintain our Dave Lennox Premier Dealer™ status by participating in an independent Customer Review program. The program gives customers an opportunity to provide honest feedback and ratings on the quality of our service and keeps us accountable for performing high quality work and customer service at all times. Better Business Bureau Klaus & Sons Heating & Air Conditioning is a member of the Better Business Bureau, meaning we respect ethical business practices and share honest information with our customers. We have a solid rating and are proud to be part of this organization.