If your flimsy storm door has seen better days (could it have any more dents?), consider making an upgrade. Although not a necessity, storm doors can provide ventilation and add another layer of protection against the elements. The newest versions can be fitted with Low-E glass, which blocks solar radiation, or screens that retract when not in use.
Storm doors are typically made of wood, steel, fiberglass, or aluminum and come in full view or midview (with a solid bottom). For maximum flexibility, choose one with removable panels that can be switched out according to the seasons―glass in the winter and screens in the summer. One caveat: If your front door gets even a few hours of direct sunlight a day, a glass storm door may trap heat and damage your front door. Prices range from about $90 to $350 (with screens and glass included).