To beat the fall and winter rush of getting your furnace serviced, and to find out early if you have any furnace problems, you should put this on your “to-do” or “honey-do” list in the next month. You don’t want to get caught on one of those rare really cold days without a working furnace – particularly if you don’t have an alternate form of heating such as a gas or wood burning fireplace or a wood stove to get you through.
We have a furnace guy we’ve used for years listed at: https://teamreba.com/resourcecenter.htm#heatingCooling
One short term method I used back when I had this unfortunate cold situation happen to me was to boil water on the stove. The moist, heated air helped raise the temperature in my 1-story house from 55 to 74 degrees while I waited for a repairman to show up. Oh, and that brings up another suggestion… check the battery in your digital thermostat – I was a big dork and that was my minor problem that I paid $100 to find out – the battery had died. Put this battery swap-out on your list with Daylight Saving’s when you change the batteries on your smoke detectors. 🙂