A furnace that won't heat is an emergency in cold weather. Compare local technicians and request a fast, free quote.
No-heat calls are one of the most urgent HVAC service categories, especially for households with young children, older adults, or anyone dependent on medical equipment. Most furnace repair companies prioritize no-heat calls and can often get a technician out same-day, even in winter's busiest weeks.
Safety first: if you smell gas, hear the furnace making loud banging noises, or suspect a cracked heat exchanger, turn off the system at the breaker or gas valve and call a licensed technician immediately — never attempt to diagnose a gas furnace yourself. Carbon monoxide detectors near sleeping areas are strongly recommended for any home with a gas or oil furnace.
Common furnace repairs include ignitor and flame sensor replacement, blower motor failure, and clogged filters restricting airflow. If your furnace is 15+ years old and needs a costly repair, compare the estimate against our Furnace Replacement Cost Calculator.
Check the thermostat batteries and settings, the circuit breaker, and that the filter isn't so clogged it tripped a safety switch. If it still won't run, call a licensed technician rather than opening the unit.
A brief "dusty" smell at the start of the heating season is normal. A persistent burning smell, or any smell of gas, is not — shut off the system and call a professional immediately.
Minor repairs like ignitors or sensors typically run $150-$400. Major repairs like a heat exchanger or blower motor can run $600-$1,800. Compare against a full replacement with our Furnace Replacement Cost Calculator.
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