Good evening! First report any gas odor, carbon-monoxide alarm, smoke, soot, dizziness, or breathing symptoms. For Fast emergency furnace repair in Seattle, give Product Air Heating & Cooling the furnace model, thermostat reading, cycle pattern, filter condition, fault light, recent work, and safe access details. You should avoid opening sealed panels or repeatedly restarting the furnace. If any danger sign is present, get everyone outside and follow utility or emergency-service instructions before contacting a repair company.