Our Service AreasAt ABC Heating & Air Conditioning, we service Eastern Denton, Collin, North Dallas and Southern Grayson counties, including these cities:Dallas, TXPlano, TXMcKinney, TXFrisco, TXEast Denton, TXRichardson, TXLewisville, TXAllen, TXFlower Mound, TXThe Colony, TXGarland, TXCarrollton, TX