I just had to explain to all my students in school about homes in different climates. We discussed homes that live in a very hot environment. These are like the very hot and dry areas. We noted that houses in these areas usually have shutters. People have shutters in order to keep the Sun out. It is important to keep the Sun out of your house because that is what helps to heat your house. So if you live in a cold climate and it is a very cold day but the sun is shining you might want to open your curtains blinds or shutters. By letting the sun rays shine into your home it is actually warming your home. You are getting heat put into your home for free. And your HVAC system will have to work a lot less. You do not have to pay for free sunlight into your house. But if you live in a very warm and dry climate you would probably want to keep your shutters close. If you keep your shutters blinds or curtains closed this means the sun is being blocked out. Then the sun rays will not heat the air that is already in your house. So if you live in either of these areas think about what you need to do in order to keep your house cooler or to keep your house warmer. Having shades, blinds, curtains or shutters will definitely help you in the long run. These things were invented for homes for a reason. It was definitely to help you keep your air and your home temperature controlled.