"The benefit of installing blinds is two-fold. First, of course, blinds block sunlight from entering the room and heating it up. Second, especially when using energy-efficient varieties, blinds trap a pocket of air between the window and the window treatment. This creates an insulating effect that helps to keep temperatures in the room much more stableâ¤”quite literally, blinds keep energy from flying out your window.With blinds on your windows and interior temperatures stable, cooling the home using an air conditioning unit or a ceiling fan requires less energy because the equipment doesnâ¤™t have to work as hard to achieve the desired effect. It also allows you to set your thermostat higher when youâ¤™re away from home because you wonâ¤™t have to wait as long, to lower the temperature to a comfortable level later on."