Our Certifications at Ilten's Incorporated We’re committed to providing the Cedar Rapids community with the most responsive heating and cooling service around. To ensure our expertise, we’ve gone through rigorous training to receive the industry certifications you see below. Discover more about our certifications here and give us a shout at 319-363-0283 to speak directly with our representatives. Dave Lennox Premier Dealer™ To receive status as a Dave Lennox Premier Dealer™, Ilten's Incorporated in Cedar Rapids was trained and is routinely independently evaluated to ensure we give an unmatched level of customer service. We’ve partnered with Lennox®, a leading company in home comfort, to offer some of the best heating and cooling products in the industry. We keep 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 share their opinions on our service quality, keeping us accountable for performing high quality work and customer service at all times.