The answer to 'how long does surge protection last' is that most surge protectors have a lifespan of 3-5 years with normal use. Surge protectors work by absorbing and dissipating excess voltage from power surges, and over time this capacity diminishes as the internal components wear out. It's important to replace your surge protectors every few years to ensure they continue providing adequate protection for your valuable electronics.
Some key factors that can affect the lifespan of a surge protector include the quality of the components, the frequency and severity of power surges in your area, and the overall electrical load placed on the surge protector. Higher-quality surge protectors with more robust internal components may last closer to 5 years, while cheaper models may need to be replaced more often.