If you are living in a huge, own home, you possibly are happy because of that, mostly in the time of summer time. And what about winter? How much funds you are wasting each year for heating? If your resident is older then 10 years, it possibly does not have a proper wall insulation. Or maybe also you do not have a modern windows which will protect your house from wasting the hot air. If you like to cut your costs, you need to invest some cash at the beginning.