The modem is the most critical piece of networking hardware in your house, as it provides a connection to the Internet. If your modem ever stops working, you won't be able to get online. So how often should you replace your modem to avoid a sudden disaster? The general rule of thumb is every two years, but it depends on many different factors.
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How often should you replace your router and why?
Like any other networking hardware or technology in general, there is a significant difference between basic and advanced modems. Lower quality modems tend to have a lifespan of two to three years, while higher quality modems usually last more than five years. In general, you can expect a modem to last between two and five years before it needs to be replaced due to failure or obsolescence.
Higher end modems tend to use higher quality parts, like better capacitors that last longer before failing. Some modems are designed better than others for heat dissipation, which can also help them last longer. For example, a well ventilated modem that is regularly cleaned and dusted internally will last much longer than a poorly ventilated modem that has never been cleaned or maintained in any way.
In addition to build quality, case and heatsink design, and the level of maintenance provided over the life of the modem, you must also consider features and capabilities. Even if a modem still technically works, it's often a good idea to upgrade if it doesn't offer the highest possible speeds, doesn't have the latest wireless network standards, or lacks essential features.
