Certifications at Lycoming Heating Company We’re dedicated to providing the Williamsport community with the best heating and cooling service possible. To help us do this, 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 570-326-4450 to speak directly with our representatives. Dave Lennox Premier Dealer™ To receive status as a Dave Lennox Premier Dealer™, Lycoming Heating Company in Williamsport was trained and is routinely independently evaluated to ensure we offer 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 encourages customers 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.