During our mild winter months when you run the furnace to keep your household warm, you’ll become used to a standard pattern for how the HVAC system turns on and off. You’ll hear the blower fan come on, then the furnace burners ignite, and the rush of heated air pushed through the ductwork. After fifteen minutes or more, the furnace will then start cycling down, turning off the burners and eventually the fan. When the temperature begins to fall below the setting on the thermostat, the HVAC system will begin another heating cycle.
This is the normal behavior you’re used to from the furnace and probably don’t pay much attention to it. But if the furnace breaks this pattern and begins to turn on and off with greater frequency, you may notice. And then you may wonder: is this a problem?
