Have the furnace inspected to ensure it’s safe and in good working order. Most utility companies will provide no-cost inspections. check your furnace filter every couple of months to ensure its not getting clogged. You can purchase a higher priced filter that you can wash off, let dry, and reinstall.
A DIY tip for the new year: make sure a water problem can be stopped quickly simply by showing the family members where all the water shutoffs are located, and how to turn them off in case of a minor or major leak. If needed make a simple diagram of where they are and what they shut off. Remember a little leak could cause a lot of damage by the time someone gets there to fix it!