Proudly serving the Dallas County, Collin County, Rockwall County, Hunt County and surrounding areas for over 20 years. Campbell Air Conditioning and Heating is your one stop shop for all your residential or commercial HVAC needs. A/C, Heat Pump, Furnace, Package Units and Zone Controls are a few of the items we can assist you with. Does your home or business system regularly get the routine maintenance it requires? We can help. Maintenance contracts are available upon inspection.