Dallas summers are among the most demanding in the United States — temperatures regularly reach 105–110°F, and the DFW urban heat island keeps overnight lows above 80°F during heat waves. AC systems here run 7–8 months annually, and failures peak in July and August when contractors are at maximum demand. Licensed AC repair contractors in Dallas diagnose compressor failures, capacitor and contactor problems, refrigerant leaks, and evaporator coil issues. Texas requires HVAC contractors to hold a Class A or Class B license from TDLR — verify at license.tdlr.texas.gov. Repairs run $150–$500; compressor replacement averages $1,400–$2,800. Contractors here serve Dallas and the DFW metro including Fort Worth, Plano, Irving, Garland, and Mesquite.