Our Certifications at Contra Costa Heating & AC We’re passionate about providing the the Bay Area community with the finest heating and cooling service possible. To help us do this, 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 buzz at 510-343-9841 to speak with one of representatives in person. Dave Lennox Premier Dealer™ To receive status as a Dave Lennox Premier Dealer™, Contra Costa Heating & AC in the Bay Area was trained and is regularly independently evaluated to ensure we provide 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 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 rate the quality of our service, which keeps us accountable for doing high quality work and customer service at all times. Better Business Bureau Contra Costa Heating & AC is a member of the Better Business Bureau, meaning we adhere to ethical business practices and share honest information with our customers. We have a excellent rating and are proud to be part of this organization.