Wi-Fi routers last 3–5 years before firmware support ends. After that, security vulnerabilities accumulate without patches. Wi-Fi 6 replaces Wi-Fi 5 as the current standard.
Wi-Fi routers have a practical lifespan of 3–5 years — not because the hardware fails, but because manufacturers stop providing firmware updates after this period. A router without firmware updates stops receiving security patches, leaving your entire home network vulnerable to known exploits. Beyond security, Wi-Fi standards advance roughly every 4–5 years: Wi-Fi 4 (802.11n) → Wi-Fi 5 (802.11ac) → Wi-Fi 6 (802.11ax) → Wi-Fi 7 (802.11be). A router still running Wi-Fi 5 in a Wi-Fi 6 household will bottleneck devices that support the newer standard. The router is the most security-critical device on your home network and arguably the most often neglected.
Replace your router when the manufacturer has ended firmware updates (check their support page), when your Wi-Fi standard is 2 generations behind the devices in your home, or when you experience persistent connection instability that a factory reset doesn't resolve. A router without security updates is a security vulnerability that can compromise every device on your network — treat it with the same urgency as an expired smoke detector.
Look up your router's model number on the manufacturer's website and check if it still appears on their "supported" or "firmware download" pages. If your router dropped off the supported list more than 12 months ago, it's receiving zero security patches and should be replaced regardless of whether it "still works." The hardware functioning doesn't mean the software is safe.
Check the manufacturer's website for your router model. If firmware updates stopped 12+ months ago, replace it. Also check: is your router running Wi-Fi 5 or older while your devices support Wi-Fi 6? If your ISP provides 500 Mbps but you're only seeing 100–200 Mbps over Wi-Fi, an outdated router is likely the bottleneck.
Wi-Fi 5 (802.11ac) is the previous generation — still functional, but older. Wi-Fi 6 (802.11ax) is the current standard, offering faster speeds, better performance with many connected devices, and improved range. Wi-Fi 7 launched in 2024 for high-end use. For most homes, Wi-Fi 6 is the practical upgrade target from Wi-Fi 5.
Mesh systems (Eero, Google Nest WiFi, Orbi) are worth considering for homes over 2,000 sq ft, multi-story homes, or homes with thick walls or many dead zones. For a small apartment or single-floor home, a high-quality single router ($80–$150) with good antenna placement typically covers the space without the cost of a mesh system ($200–$500).
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