Window tinting can give a stylish look to a modern home, but it's not all looks. Window tinting reflects away a great deal of solar radiation, meaning your cooling systems don't need to work as hard and therefore indirectly saving energy.
Protects you and your furniture against ultra violet (UV) radiation.
If you are prepared to DIY, then you can typically tint your whole home for under $400 with a weekend's work. Basically all that is involved is;
Microscopic ceramic balls with the consistency of talcum powder are added to standard interior or exterior paint to enhance the thermal insulation property of the material upon which it is painted.
This paint additive is available under a number of different names. Essentially it is a waste product that NASA discovered to have exceptional insulation properties.