Our Certifications at We’re dedicated to providing the McHenry community with the finest heating and cooling service around. To ensure our expertise, we’ve gone through rigorous training to receive the industry certifications you see below. Learn more about our certifications here and give us a shout at 815-410-1128 to speak directly with our representatives. Dave Lennox Premier Dealer™ To receive status as a Dave Lennox Premier Dealer™, in McHenry was trained and is routinely independently evaluated to ensure we offer an unmatched level of customer service. We’ve partnered with Lennox®, a leading company in home comfort, to carry some of the best heating and cooling equipment in the industry. We sustain our Dave Lennox Premier Dealer™ status by participating in an independent Customer Review program. The program encourages customers provide honest feedback and rate the quality of our service, which keeps us accountable for performing high quality work and customer service at all times.