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Consider Installing Storm Windows

Windows are one of the main areas of concern when it comes to air escaping out of your home. That's why it might be worth considering investing in some storm windows. These are basically more durable windows that go over your existing windows. And while they're meant to protect your home and windows from storms, they can also help you save money on your energy bill by keeping air from escaping.

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They even sell special storm windows designed to do just that. However, they might be somewhat of an investment upfront, but they should still save you some money in the long run.