If you live in a house with high heating costs and outdated windows, maybe you should consider installing new, double-glazed glass windows. Like a storm window, double-glazed glass creates insulation by using an extra sheet of glass to create an air pocket.
You see, glass itself isn't an insulator, it's the air pocket trapped between the two pieces of glass that insulates. But unlike storm windows, there's no heat loss along the frame of double glazed windows, thus making them more energy efficient. What's more, with double-glazed windows, the air pocket often has a drying agent to absorb moisture, and they usually come with a reflective coating to increase the insulation. But make sure the neighborhood kids don't play ball anywhere near the windows because, once cracked, they need to be replaced.
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