We are in central IN. Last May, we went from needing our furnace one day to needing the a/c the next. I swear, two weeks ago, the exact opposite happened! We, however, have not yet turned on our furnace. In fact, we just were just talking about how we need to get the furnace guy out to do yearly check and cleaning one of these days. I always say I am going to wait till Nov 1 but it is generally closer to mid-Oct. We do have a couple small auxiallary heaters (one in the lvg room and one in our bathroom). I absolutely cannot stand a cold bathroom! Hopefully, it will warm back up into the mid0-70s for the next few weeks! What a weather year!