The best thermal curtains help reduce energy usage while adding style. We tested our top picks to see which provide the most insulation.

3. Install a Thermal Lining "Adding a thermal lining to your curtains is one of the most effective methods to make them warmer without altering their appearance," says Elissa.

These thermal curtains are designed with temperature regulation in mind, as well as being full blackout curtains that effectively block light. They are super affordable and come in 14 sizes and 35 ...