To consider before you buy /global/scaled/3585x1560x32x201x1000x435/Yale-South Africa-2015-house.jpg Securing your home should not be complicated. Read Yale's buying guides for different products to see what you need to know before you buy. First of all decide whether the whole lock or a part of the lock needs to be replaced. There are several reasons why a lock or lock part might be in need of replacement. The most common reason is that your current one is broken; another important reason is to increase the security of your home.