Our Certifications at Giordanos Heating and Air Conditioning We’re committed to providing the Derby community with the most responsive heating and cooling service possible. To do so, 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 203-734-7648 to speak with one of representatives in person. Dave Lennox Premier Dealer™ To receive status as a Dave Lennox Premier Dealer™, Giordanos Heating and Air Conditioning in Derby was trained and is routinely independently evaluated to ensure we give 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 products in the industry. We maintain our Dave Lennox Premier Dealer™ status by participating in an independent Customer Review program. The program encourages customers 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.