Dring Air Conditioning & Heating is an AC replacement and installation company servicing the entire Dallas-Fort Worth area. Dring does not subcontract its AC Replacement or AC Installation work to third parties, and has the most experienced technicians and installers in the DFW market.Dring offers all the major brand names including brands like Carrier®. This makes us one of the best air conditioning companies in the area and have been in business since 1953.