Many people around the world use solar window tinting films on their home windows, office windows and car windows. The reason it has become such a popular product to have installed, is that it reduces heat, glare and uv rays from entering in through your home windows.
Reduce unwanted heat that comes in through the windows. You wont have the need to run heating devices at home or in the office as much as you did before. This in turn gets you cheaper electricity bills. Saving you a ton of money in the long run. You can find an interesting article on water storage in south africa.
Having your windows professionally tinted also prevents harmful UV rays from entering your home through the windows. These UV rays can give you skin cancer and damage floors, carpets and curtains. Just about anything it comes in contact with gets damaged or faded badly with time. Window tinting with solar film helps prevent this from happening.