A mid-efficiency gas furnace's pilot light is what when the furnace is not in operation?

The pilot light of a mid-efficiency gas furnace is designed to remain off when the furnace is not in operation. This is a characteristic of many gas appliances that utilize a pilot light system. When the thermostat does not call for heat, the furnace will not ignite its burners, and therefore, the pilot light is turned off to conserve gas and improve safety.

In contrast, an on pilot light would indicate that the furnace is actively ready to generate heat, while flashing could suggest a malfunction or a specific operational status, which is not typical when the system is idle. An intermittent light, implying that the pilot ignites and extinguishes at intervals, is not standard for a mid-efficiency furnace when it is not being used. Thus, the pilot being off when the furnace is not functioning optimally supports energy conservation and safety regulations.