Willie's Heating & Cooling | Certified HVAC Services in Madison, WI

Key signs include a strange, chemical-like odor (similar to formaldehyde), soot buildup around your furnace, visible cracks on the burner flames (a 'rolling' flame), or frequent headaches/nausea in the home. This is urgent because a crack can leak carbon monoxide—an odorless, deadly gas—into your living space. If you notice these signs, shut off your furnace immediately, ventilate your home, and call us for a safety inspection right away.

Yes, this is a classic symptom of an air handler fan failure. The furnace may ignite and create heat, but the blower fan that pushes that warm air through your ducts isn't working. This can be caused by a failed motor, a bad capacitor, or a faulty control board. Don't let the furnace cycle on and off trying to work—this can cause overheating. We'll diagnose the specific electrical or mechanical issue with your blower to get your Madison home warm again quickly and safely.

Proactive maintenance is the best defense. Before winter, schedule a professional tune-up where we'll clean components, check for early signs of heat exchanger stress, test the air handler fan and motor, and ensure safe operation. Regularly change your air filter (every 1-3 months) to prevent strain on the blower fan. Also, keep vents clear and listen for unusual noises like grinding or squealing from the blower compartment, which are early warnings. Our maintenance plans are designed to catch these local, common issues before they leave you in the cold.