Fast, Affordable Air Conditioning, Heating , Water Heater Repair and Installation.TexasAirDoctors services all of Tarrant County. We're only minutes away from your home in Southlake, Colleyville, Keller, Grapevine, Euless, and Fort Worth from our North Richland Hills Office. We install, service, repair and retrofit air conditioning, heating and hot water tanks of every brand and variety.