What Can Your Furnace's Flame Tell You?
You rely on your furnace to keep your warm all winter long, but these appliances can develop various problems due to age, inadequate maintenance, or bad luck. You know something is wrong when the heat stops, but your furnace may be throwing warning signs your way long before the situation devolves to this level. If you know what to look for, your furnace flame is an excellent diagnostic tool. Experienced HVAC technicians can easily recognize the signs of trouble, but it's often more challenging for do-it-yourselfers.