How to Trap In That Expensive Heat In Your Home Caulk Windows. Drafty windows are one of the leading causes of chilly homes in the winter. ... Use Solar Curtains. ... Cover Hardwood or Tile Floors. ... Upgrade Your Insulation. ... Draft Dodgers. ... Insulation Kits. ... Reverse Fan Trick. ... Seal Unused Space. More items... Jan 29, 2016