1. Check and replace your furnace air filter frequently.
2. Run the fan all the time to keep the warm air circulating throughout the house.
3. Shut off vents in unused areas of the house, but do not shut off too much of the house so the furnace does not overheat.
4. Close the blinds to keep cold air out and open the blinds and drapes when the sun is shining.
5. A humidifier will help you feels warmer.
6. Seal openings around windows and doors to keep cold air out.