As a rule, we’re happy with anything over 120Mbits/sec (15MB/sec). To put that into context, Netflix recommends a connection speed of at least 5Mbits/sec for HD streaming and 25Mbits/sec for 4K video. A good, solid Wi-Fi network should easily be fast enough to cope with multiple simultaneous high-resolution video streams. Every Wi-Fi extender we review goes through extensive hands-on testing. Each unit is installed in a real home, at an appropriate distance from the main Wi-Fi router according to the manufacturer’s recommendations. If it’s a powerline system, we connect the base unit to the main router via gigabit Ethernet and, again, situate the remote unit according to the instructions.

Naturally, however, connecting devices to an extender via Ethernet won’t be as fast as a direct wired connection to the router because the signal still needs to travel from your router to the extender over the airwaves first. What other features should I look for? If the extender has advanced features, we’ll also factor these into our review; we’ll thoroughly explore the configuration portal to see how responsive and user-friendly it is, and, if the unit has an Ethernet port, we may test network performance over a wired connection. It’s also worth trying out a few different wireless settings, such as switching radio bands, before you splash out on a new bit of kit. You might find that this gets you a better signal from your existing equipment and that there’s no need to buy an extender at all. What speeds can I expect?

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It barely kept its cool, hitting a peak of 107 degrees Fahrenheit, despite its array of cooling vents. The E15’s 115-degree Fahrenheit surface temperature was higher though. Tenda A27 review: Features READ NEXT: Our full review of Netgear’s outstanding Nighthawk X6S Wi-Fi extender Tenda A15 AC750 review: Verdict

As a bonus, if you have a TP-Link router that supports its OneMesh technology, you get hassle-free, seamless connectivity wherever you are in your home. Needless to say, you need a Wi-Fi 6 router and compatible devices to make the most of it, but this extender gives you the latest wireless tech at a bargain price.When the test system was moved upstairs to a bedroom, the throughput was a more reasonable 173.1Mbps, with slightly higher performance than the Linksys RE7310 and half the Nighthawk EAX80’s 358.0Mbps.

Up until recently, most extenders and Powerline kits only went as far as the Wi-Fi 5 standard, but we’re seeing a growing number that go faster with Wi-Fi 6 support. If you only have a Wi-Fi 5 router, you can save some cash by partnering it with a Wi-Fi 5 extender, but the newer models may give you a faster connection between the extender and devices that support Wi-Fi 6. What’s more, there’s an argument that buying one of these makes more sense if you plan to upgrade your network in the future. What’s the difference between a repeater and a powerline extender? The bigger brother of the lovable RE505X is another compact, plug-in Wi-Fi 6 extender, but with the speeds boosted to meet the AX3000 spec. Similar to its cheaper sibling, this model is easy to set up and configure using TP-Link’s Tether app, and it supports OneMesh technology for seamless roaming around the house. If you have a compatible TP-Link router, it can even set up the RE700X while in this mode. The downside of these speeds is that they involve a design that looks more like a small router with a separate power supply. However, this gives you more flexibility than a plug-in unit, helping you to get a better signal, while you can also use this repeater as a Wi-Fi access point. And, just like the Repeater 3000, it’s as simple as anything to set up. The WiFi 6 Repeater 5400 will be overkill for many people, but if you must get a high-speed connection to a distant corner of the house, nothing else out there comes close.

The best Wi-Fi extenders you can buy in 2023

Powerline systems are often more expensive than repeaters but they’re a fuss-free way to extend a network connection into places that are otherwise hard to reach and can be simpler to set up. Might I be better off with a mesh Wi-Fi system? The RE450 isn’t the cheapest Wi-Fi 5 extender, but it’s faster and more stylish than the budget competition. Don’t be put off by its age: it still deserves a place on anyone’s shortlist. The Magic 2 kit beats the old Magic 1 kit we had in this slot by giving you two high-speed 867Mbits/sec Wi-Fi streams for little more than the price of one, which comes in handy if you’re trying to network two or more devices. Advanced users will appreciate the companion app that shows connection diagnostics, so you can work out where to locate the plugs for the best performance. The web portal, meanwhile, lets you manage your wireless configuration, set up a guest network and apply an operating schedule so that (for example) the extended network is only available during office hours. The newer Wi-Fi 6 kits will give you even more performance if you have Wi-Fi 6 devices, but if not this is a great solution.

It’s very easy to use as well, with setup managed by the superb TP-Link Tether mobile app, which provides access to all the settings you might need. To test network performance, we use a laptop equipped with an Intel Wi-Fi 6 network card supporting 2×2 MIMO. We connect this laptop to the extended network, then take it to various areas of the home and copy a standard set of files to and from a NAS appliance, connected by Ethernet to the main router. By measuring the average read and write speeds, and comparing them to those achieved when connecting directly to the router, we can measure how each extender helps Wi-Fi range and performance. With the ability to cover up to 2,000 square feet, the Tenda A27 did well in my 100-year-old home, pushing the Wi-Fi network into new areas. It was able to move 294.3Mbps with the extender 40 feet from the Asus AXE-11000 router and the Samsung Galaxy Book Pro test system another 10 feet away. That’s about one-third more throughput than the D-Link E15 was capable of but well short of either the TP-Link RE705X’s 528.0Mbps or the Nighthawk EAX80’s 358.0Mbps.

The Tenda A27 is a highly configurable Wi-Fi extender with a great warranty

Mesh networking systems work in a similar way to Wi-Fi repeaters but they give you the option of placing multiple nodes all over your home to cover a larger area than a single extender could manage. You can learn more, and explore our recommended models, in our guide to the best mesh Wi-Fi routers.