Installing insulated window shades can significantly improve home energy efficiency and comfort. Insulated shades have an R-value rating that indicates their ability to block heat transfer, with higher R-values providing better insulation. Proper installation with deep vertical tracks and weatherstripping helps the shades form an effective air barrier. When selecting shades, factors like the R-value, ease of operation, and appearance should be considered. DIY options like cellular and Roman shades can also provide insulation benefits if constructed with reflective barriers between layers.