What are interior storm windows and why use them:

Lowering energy expenses is high priority for most homeowners. However, the costs involved and concerns about the appearance of the house are two big issues that discourage many homeowners from going ahead with implementing energy saving plans. Interior storm windows are especially suited to address these concerns, especially when it is desirable to retain the original windows. Interior storm windows enable homeowners to retain the original look of the house while economizing on energy bills at the same time.