Routers rarely fail cleanly. They age gradually, occasional dropouts, the odd power cycle, range that once reached the back bedroom now stopping halfway.
Because the decline is gradual, nearly everyone keeps theirs too long. And the strongest reason to replace one isn't the reason usually given.
The reason least often mentioned
Your router is the only device in your home connected directly to the internet, twenty-four hours a day, with nothing in front of it. Every other device sits behind it.
Manufacturers issue firmware updates to close holes discovered after the device went on sale. The catch is that this support ends, commonly three to five years after launch, not after you bought it.
Once support ends, holes found afterwards are never closed. The router keeps working exactly as before, and nothing announces the change. The only difference is this: publicly disclosed vulnerabilities now apply permanently to your device, and automated scanners look for them continuously.
How to check: open the manufacturer's support page, find your model, look at the date of the latest firmware. If it's more than two years old with no explanation, that model has most likely been abandoned. How to reach the admin panel is in the guide to securing your home router.
The signs that genuinely indicate age
Some complaints taken as signs of an old router are really something else. Telling them apart saves unnecessary spending.
| Symptom | Usually means |
|---|---|
| Needs power-cycling several times a week | The hardware is aging, a strong candidate for replacement |
| Slows down when many devices are active | The router's capability is exceeded |
| Runs unusually hot to the touch | Aging components or blocked ventilation |
| Slow only at certain hours | Not the router, the provider's network is congested |
| Slow only in one room | Placement or obstacles, not age |
| One device struggles, the rest are fine | That device itself, not the router |
The last three rows frequently lead to wasted purchases. Before deciding, work through the guide to full signal but slow internet and the guide to Wi-Fi problems on one device.
How to confirm the router is the cause
One simple test separates the possibilities convincingly enough.
Test over cable
Connect a laptop to the router with a LAN cable and measure. If the result matches your plan, the internet connection and the router's wired side are healthy, the problem is on the Wi-Fi side.
Measure from close range
Stand a metre from the router and measure again over Wi-Fi. If even here it's far below the cabled result, the router's wireless capability has genuinely fallen behind.
Compare against a newer phone
An old device can be the limiting factor. If a recent phone gets a much higher result at the same spot, what needs replacing may not be the router.
Watch it when the house is busy
Old routers often give up on quantity rather than speed. Test when everything is on, not when it's quiet.
When replacing fixes nothing
A new router doesn't add capacity you never bought. If your plan is 30 Mbps, the most expensive device available still stops there.
Other situations where replacement is wasted:
- Multi-storey homes or thick walls. The problem is range, and a single better router rarely reaches meaningfully further. What solves it is adding points, see the guide to mesh versus repeaters.
- The router sits in a corner or inside a cabinet. Move it before buying, see the guide to router placement.
- Your own devices are old. Wi-Fi 7 on the router means nothing if your laptop only supports an older standard, see the guide to Wi-Fi 5, 6, and 7.
- The provider's connection is the problem. The symptoms show over cable too, and a new router doesn't touch it.
If replacement is warranted
What matters most isn't the speed figure on the box, but these three:
- The manufacturer's support policy. How long security updates are promised. Some state it openly, and that's a good sign.
- How many devices it reasonably handles. A home with twenty smart devices demands something different from one with five, see the guide to smart device security.
- WPA3 support. The newer security standard, and a reason in itself to leave older hardware behind, see the guide to WPA2 versus WPA3.
The full set of considerations is in the guide to choosing a router, and the setup steps in the guide to setting up a new router.
The old router is better off switched off
After an upgrade, the old router often gets redeployed as a booster in another room. That makes financial sense, but the consequence is worth knowing: an unsupported device is back on your network.
If you do reuse it, disable what isn't needed, remote panel access, UPnP, and file sharing. How to connect it properly is in the guide to two routers on one network.
And if you're disposing of it or passing it on, reset it to factory settings first. The panel still holds your Wi-Fi password and sometimes service credentials, see the guide to resetting a router.
The bottom line
The hardware usually outlives the support. So the better question isn't "does it still work" but "is it still being updated".
If the last firmware is more than two years old, that's reason enough, even when everything feels fine. Beyond that, confirm the router really is the bottleneck, rather than placement, your plan, or your own devices.
Frequently asked questions
How long does a Wi-Fi router last?
In hardware terms, five to eight years is commonly reached. But security update support usually ends much earlier, often three to five years after launch. That second limit is what actually decides, not when the hardware fails.
My router still works fine. Do I need to replace it?
Still working isn't an adequate measure. If the manufacturer has stopped issuing updates, vulnerabilities found after that point will never be closed, while the router stays connected to the internet all day.
Will a new router make my internet faster?
Only if the router is what's holding you back. If your plan is 50 Mbps and you already reach that over cable, a new router adds nothing. What usually improves is range and handling many devices at once, not the speed figure.
