Not always. In some cases, dented or damaged gutters can be repaired. However, if the gutter structure has collapsed or is crushed, you may have no other option but to have it replaced. Even if your gutters look fine, you should know how old they are. If they are over 20 years old, it is time to have them replaced. With proper care and periodic cleaning, you can extend the life of your gutters and avoid the expense of a replacement.