Our Certifications at Patterson & Stirling Inc We’re passionate about providing the Erie 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 shout at 814-833-5558 to speak directly with our representatives. Dave Lennox Premier Dealer™ In order to become a Dave Lennox Premier Dealer™, Patterson & Stirling Inc in Erie was trained and is continually independently evaluated to ensure we give an unmatched level of customer service. We’ve partnered with Lennox®, a leading name in home comfort, to provide some of the best HVAC products 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 rate the quality of our service, which keeps us accountable for doing high quality work and customer service at all times.