This is an important question that very few people know the answer to. The truth is, there are several factors that determine how often you should change your locks. One of the most common reasons why it’s recommended that you upgrade your lock every 5-10 years is simply because like everything else in your home or business, they’re going to start to wear down after a while. The longer you wait before replacing your lock, the greater risk you put yourself into being burglarized or worse.