Our Certifications We’re dedicated to providing the the Main Line community with the best heating and cooling service around. To ensure our expertise, we’ve gone through rigorous training to receive the industry certifications you see below. Find out more about our certifications here and give us a call at 610-626-2540 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 heating and cooling industry. NATE certified technicians have shown superior skill in the installation, service and maintenance knowledge of heating and cooling products and can gain recognition in these specific 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™, O'Brien Heating & Air Conditioning in the Main Line 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 carry some of the best heating and cooling equipment in the industry. We keep our Dave Lennox Premier Dealer™ status by participating in an independent Customer Review program. The program asks customers to provide honest feedback and share their opinions on our service quality, keeping us accountable for performing high quality work and customer service at all times. SunSource® Solar-Ready Dealer Designation Receiving SunSource Solar-Ready Dealer designation from Lennox means that we’ve finished training on solar-ready products, sales and tech. We also understand the Main Line utility requirements for solar installations and rebates, and we’re familiar with local grid interconnectivity abilities. Additionally, we’ve begun or completed solar training and certifications so we can offer you a quick and simple purchase and installation process. Better Business Bureau O'Brien Heating & Air Conditioning is a member of the Better Business Bureau, meaning we respect ethical business practices and communicate reliable information with our customers. We have a excellent rating and are proud to be part of this organization.