Wi-Fi that actually reaches the whole house.

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Coverage and speed are two different problems.

Almost every bad Wi-Fi purchase comes from treating them as one. Buying a faster router will not fix a dead spot, and adding an extender to a fast connection often makes the far end slower than before.

Wi-Fi gets weaker with distance and with every wall it passes through. Higher frequencies carry more data but travel less far and are stopped more easily by masonry. That trade-off is the whole story:

Before you spend anything

Check it is your house, and not one device.

If every phone and tablet is fine in the back bedroom and only the old laptop struggles, you do not have a coverage problem. You have one device with a tired or badly positioned radio, and no amount of mesh will fix it.

This is worth ruling out first because the fix is a few pounds instead of a few hundred. Stand in the same spot with a phone and the problem device. If the phone is happy and the laptop is not, the laptop is the problem.

The cure is a USB Wi-Fi receiver, or for a desktop a PCIe card with external aerials. Both replace the internal antenna with one that is not buried inside a metal case or a hinge. Two things to watch: plug it into a USB 3 port, because a USB 2 socket will throttle a fast adapter, and buy a known brand, since cheap unbranded dongles are notorious for flaky drivers.

Option 1

Wi-Fi extenders and repeaters

The cheapest fix and the one most likely to disappoint. A basic single-radio extender receives and rebroadcasts on the same radio, which roughly halves throughput for anything behind it. Many also create a second network name, so phones cling to the weaker signal instead of switching back.

Worth it when: you need to rescue one specific dead spot for light use, like a smart doorbell, a printer or a TV in a garden room, and you are not chasing speed.

Option 2

Mesh systems

Two or three units that present a single network and hand your devices between them as you move. The important distinction is not the brand, it is the radio count. Dual-band mesh shares one radio between your devices and the node-to-node link. Tri-band mesh reserves a radio purely for that backhaul, so it holds speed far better as you add nodes.

Better still, most mesh nodes accept an Ethernet cable for backhaul. Do that and the wireless penalty disappears entirely.

Worth it when: you want whole-home coverage with no cabling, seamless roaming, and one app to manage it.

Option 3

Powerline adapters

These send data over your existing electrical wiring, turning a plug socket into a network point. When the wiring cooperates they are a genuinely elegant answer for one stubborn room. When it does not, they are maddening.

Performance depends entirely on the circuit. Adapters on different ring mains, older wiring, RCD-protected circuits or anything sharing a socket with a charger or motor can drop far below the advertised figure. Never plug them into an extension lead.

Worth it when: one room needs a solid connection, running a cable is impractical, and you can test and return if the wiring is uncooperative.

Option 4

Ethernet and wired access points

The one professionals fit. Run cable to two or three access points and every one of them delivers full speed, because nothing is being relayed through the air. It handles a house full of devices without degrading, and it is the only approach that genuinely scales.

It needs cable runs, which is the real cost. But in a house with a loft, a cellar or accessible trunking it is often a single afternoon, and the result outlasts several generations of mesh kit.

Worth it when: you want it solved properly, you have a larger or awkward property, or you work from home and cannot afford flaky calls.

Quick answer

Which one should you buy?

If you only read one section, read this one.

Tested by us

Kit we have actually installed.

These are units we have fitted on real jobs, so the verdicts come from living with them rather than from a spec sheet.

You will notice they are all TP-Link, so it is only fair to say why. We standardise on TP-Link for customer installs because the firmware gets updated, the apps are not hostile, the mid-range kit is priced sensibly and spares are easy to get years later. That is a deliberate preference, not the result of a brand shootout, and there is good hardware from other makers we simply have not fitted often enough to vouch for.

Related guide

What if the connection drops out entirely?

Improving coverage does nothing when the line itself goes down, and a power cut takes your router with it even when the fibre outside is fine. That needs a backup connection rather than better Wi-Fi.

Read the broadband backup guide