Our Certifications at ACR Air Conditioning & Heating Inc Our team at ACR Air Conditioning & Heating Inc in Lake Charles aims to provide the finest heating and cooling service around. One of the ways we sustain our expertise and continue to learn about HVAC products is by earning industry certifications. Discover more about the certifications our technicians have received below. Dave Lennox Premier Dealer™ Dave Lennox Premier Dealers™ are specially trained and independently evaluated regularly to offer a higher level of customer service. As a Dave Lennox Premier Dealer™, our team in Lake Charles has partnered with Lennox®, a top name in home comfort, to carry some of the most innovative and energy efficient heating and cooling products in the industry. To keep “Premier” status, ACR Air Conditioning & Heating Inc participates in an independent Customer Review program that encourages our clients to honestly rate our performance so we can make sure our staff continuously is meeting or exceeding the highest standards for quality service.