Las Vegas winters are mild — average January lows around 34°F, with cold snaps occasionally pushing below freezing — so heating systems see limited use. Most Las Vegas homes use gas furnaces with central AC, or packaged roof units common in single-story desert construction. When furnaces fail during a Las Vegas cold snap, contractor availability is generally better than during the peak summer season. Licensed furnace repair contractors in Las Vegas diagnose igniter failures, gas valve problems, heat exchanger cracks, and blower motor faults. Nevada requires HVAC contractors to hold an NSCB license. Repairs run $150–$400; furnace replacement averages $2,500–$6,000. Contractors here serve Las Vegas, Henderson, North Las Vegas, Summerlin, and surrounding Clark County communities.