一个炉子能用多久？
典型的熔炉的使用寿命约为 20 年。设备的使用量和预防性维护的频率是影响熔炉使用寿命的重要因素。
newer furnaces (since around 2010) use electronic ignition systems, and do not have a pilot light. an electronic ignition creates a flame/spark when needed, but does not require a constant flame or 'standing pilot'. these newer systems are safer and more reliable. also, because a conventional pilot lights burns all times, they use more gas, which is not efficient. electronic ignitions are replacing pilot lights in many gas-burning appliances in addition to furnaces.