As this post is written, the high in Reno, NV is in the mid 100’s. Some houses are better insulated than others and window coverings have a great deal to do with that. The best insulating window covering that I currently carry is the Hunter Douglas Architella Trielle. It has a patented design that provides multiple layers of insulation.
Keep in mind that insulation numbers can be deceiving. Insulation ratings are based on the window covering being used in the completely closed position. A true professional can help you through the decision making process to make sure that you are making the right choices. For example, if you use opaque, or blackout fabrics, did you know that you won’t get any light in your room unless you open the shade, thus losing your insulation. Simple facts, but so important in making your decision. This is only one example of things you should consider.