The answer to 'how often to replace gutters' is that most gutters last between 20-30 years with proper maintenance. Factors like climate, material, and installation quality can affect the lifespan. Regularly cleaning and inspecting your gutters is important to extend their useful life.
Over time, gutters can become corroded, cracked, or pull away from the home, which can lead to water damage if not addressed. It's generally recommended to replace gutters every 20-25 years, or sooner if they show significant wear and tear. Calling a professional roofing contractor to inspect and assess the condition of your gutters is the best way to determine if they need to be replaced.