Signs it's time to replace your home router, what to try first, ISP-supplied versus buying your own, Wi-Fi standards explained (Wi-Fi 5, 6, 6E and 7), mesh systems, security updates and how to set up a new router safely.
A router that's old, overloaded or out of security support can make good broadband feel slow and unreliable. But replacing it isn't always the answer. Here's how to tell, and what to buy if you do.
Try these first
- Restart the router and devices.
- Check the router's position: central, raised, in the open, and away from microwaves, mirrors, fish tanks and thick walls.
- Test speed with a cable plugged into the router. If wired speeds are good but Wi-Fi is poor, the issue is coverage, not your broadband.
- Update the firmware, or check your ISP has.
- Check for faults with your ISP's online checker or helpline.
Signs it's time to replace it
- No more security updates: an unsupported router is a security risk. Check the manufacturer's or ISP's support information. New connectable products sold in the UK must state their minimum security update period.
- Your broadband got faster but your speeds didn't: older routers may not handle full-fibre or gigabit speeds, especially over Wi-Fi.
- Lots of devices: older models can struggle with dozens of phones, TVs and smart devices.
- Frequent drop-outs or overheating, even after resets.
- Old Wi-Fi standard: if it only supports Wi-Fi 4 (802.11n) or earlier.
Wi-Fi standards in brief
| Name | Standard | Notes |
|---|---|---|
| Wi-Fi 5 | 802.11ac | Still adequate for many homes on 5 GHz |
| Wi-Fi 6 | 802.11ax | Better with many devices; a good default choice |
| Wi-Fi 6E | 802.11ax on 6 GHz | Extra, less congested band, but shorter range |
| Wi-Fi 7 | 802.11be | Newest and fastest; benefits need compatible devices |
Your devices also need to support a standard to benefit. A Wi-Fi 7 router won't speed up an old laptop much.
ISP router or your own?
- ISP routers are free or cheap, supported by your provider, and often replaced if faulty or outdated. Ask your ISP whether a newer model is available: many offer upgrades, sometimes free when you recontract.
- Your own router can offer better coverage, features and update support. But check it's compatible with your connection (some full-fibre and cable services need specific settings or a separate modem), and that your ISP will still support you.
Is it a coverage problem?
If the router is fine but some rooms have weak Wi-Fi, a mesh system or extra access points may help more than a new router. Mesh systems use several units to spread a single network through the home. Wired backhaul, using Ethernet between units, gives the best results. Simple range extenders are cheaper but can halve speeds.
Leaving or switching provider
If your router came from your ISP, check your contract: some providers want it returned when you leave, and may charge if it isn't. When you switch, the new provider usually sends its own router. Under Ofcom's switching rules for most home broadband, your new provider generally manages the switch, so you won't usually need to contact the old one.
Setting up a new router safely
- Change the admin password if it isn't already unique.
- Use WPA3, or WPA2/WPA3 mixed mode, with a strong Wi-Fi password.
- Turn on automatic firmware updates.
- Disable remote management and WPS unless you need them.
- Consider a separate guest network for visitors and smart devices.
- Recycle your old router properly; many ISPs ask for it back. Reset it to factory settings first.
Frequently asked questions
How long do routers last?
Often several years, but security support is what really decides their useful life.
Will a new router increase my broadband speed?
Not beyond your package speed. It can improve Wi-Fi speeds and reliability.
Sources and further reading
- NCSC: Smart devices in the home
- GOV.UK: The UK Product Security and Telecommunications Infrastructure (PSTI) regime
- Wi-Fi Alliance: Generational Wi-Fi
- Ofcom: Phones and broadband
Facts checked on 20 October 2026. Spotted an error? Tell us and we will correct it.