subject: Is It Time To Replace Your Battered Garage Door? [print this page] Replacing a garage door may also help with heating costs as the seals around new doors may be more sturdy and fit better. Dents and damage can allow cold air or rain inside the garage, which can lead to increased heating costs or water damage. Replacement garage doors come in a variety of styles from rapid roll to full size and sectional doors in various finishes. Windowed garage doors can also add a nice touch to the exterior and lots more light inside.