Hopefully you all are aware of the “other” setting on your thermostat which controls the operation of the furnace fan. The switch marked auto / on tells the furnace to run the fan only when the thermostat calls for heating or cooling when it is in the “Auto” mode. When the switch is in the “On” mode the fan runs all the time.
I personally like the “On” mode all the time you have your windows closed. This will minimize the temperature difference from the upper floor of your home to your lower floor and reduce the time your furnace and air conditioner run. Another great benefit of running your fan all the time is that you are constantly filtering the air in your home. This will also reduce the need some of you have for an additional dehumidifier in your basement.
When it comes time to replace your furnace , be sure to purchase a model with a high efficiency DC blower motor which uses up to 80% less electricity.