Dallas winters are mostly mild, but the DFW area's occasional hard freezes — including the catastrophic February 2021 winter storm — have made furnace readiness a priority for Texas homeowners. Most Dallas homes use gas forced-air furnaces or dual-fuel heat pump systems. A furnace failure during a Dallas cold snap demands fast response. Licensed furnace repair contractors in Dallas diagnose igniter failures, heat exchanger cracks, gas valve problems, and blower motor faults. Texas requires HVAC contractors to hold a TDLR license. Repairs run $150–$400; furnace replacement averages $2,500–$6,500. Contractors here serve Dallas and the DFW metro including Fort Worth, Plano, Irving, Arlington, and Garland.