What can cause this HVAC problem?
Confirm the thermostat is set to Heat and has working batteries if applicable. Check whether the furnace switch or circuit breaker appears off, but do not repeatedly reset a breaker that trips. Replace a dirty filter with the correct type. If you smell gas, leave the building and contact the gas utility or emergency services from a safe location.
Safe checks homeowners can make
If basic checks do not help, the furnace may need inspection of its ignition, sensors, blower, controls, or venting. Contact a qualified provider for furnace repair or broader heating repair. Describe any blinking status light without opening sealed compartments.
When to arrange professional service
If failures repeat, ask whether the cause is repairable and what the estimate includes. Aging systems may warrant a comparison with furnace replacement or furnace installation. Regular HVAC maintenance can help catch some issues early. Visit the [homepage](/) for other heating and cooling services.
What to ask before approving a repair
Ask the service provider to explain the diagnosis, the work being recommended, the estimate, and any applicable warranty. Share the equipment type and symptoms you observed. Do not attempt electrical, gas, or refrigerant work yourself. Service availability and the work offered should be confirmed directly with the provider.