Which router should you buy for a smart home: the features that matter
Updated
Smart plugs, sensors and cameras put different demands on a router than laptops do. Here are the features to check, what to skip, and which setup fits an apartment or a house.
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Start with what smart devices actually need
Most smart-home devices are small, low-bandwidth gadgets. A plug, bulb or door sensor sends a few bytes. Many of them can connect only to the 2.4 GHz band, because it reaches farther and uses cheaper radios. Cameras and video doorbells use far more bandwidth, and they stress the router’s upload speed and the number of simultaneous connections. So a router for a smart home is judged by reliable connections and good security, not by a headline speed number.
If you are counting devices, read how many smart devices your router can handle. Many entry-level routers handle dozens of devices, but basic ISP-supplied gateways can struggle as the count climbs, so check the device limit in the spec sheet.
The features to check, in order of importance
- A 2.4 GHz band that stays on. Some routers merge 2.4 GHz and 5 GHz under one network name and steer devices between them. That can confuse plugs and sensors during setup. Look for a router that lets you separate the bands or turn off band steering, or that has a dedicated “IoT” network.
- Current encryption. The FTC says to set your router to WPA3 Personal or WPA2 Personal, and notes that older routers that offer only WPA or WEP are outdated and not secure. The Wi-Fi Alliance says WPA3 is mandatory for Wi-Fi CERTIFIED devices. If a device refuses to join, check the router’s mixed WPA2/WPA3 option.
- Guest network or separate IoT network. The FTC explains that a guest network has its own name and password and keeps malware on a guest device off your main network. Many people use the same feature for smart devices. See putting smart devices on a separate network for how to do it without breaking casting or local control.
- Firmware updates. The FTC advises keeping router software current and checking the manufacturer’s site for updates. Prefer a router with automatic updates and a clear support history. If your ISP supplied the router, ask whether it sends updates automatically.
- Address reservation. A DHCP reservation lets you give a hub, camera or printer the same address every time. Hubs and local control rely on this.
- Enough Ethernet ports. Put hubs, bridges, cameras and TVs on a cable when you can. Four LAN ports are the minimum. Add a cheap switch for more.
- Coverage and backhaul. If a single router cannot reach the corners of your home, choose a mesh system, ideally with a wired backhaul. Use the mesh Wi-Fi nodes calculator to size it, and read mesh vs range extender before buying a cheap extender.
Features that sound useful but rarely matter here
Ultra-high rated speeds, such as a router’s combined “AX” or “BE” number, describe lab maximums. Wi-Fi 7 adds wider 320 MHz channels, multi-link operation and 4K QAM, which help with large downloads on newer devices. Smart plugs and sensors gain nothing from them. If you are weighing generations, compare Wi-Fi 6 vs Wi-Fi 7. Gaming prioritization, tri-band radios and 10-gigabit ports matter only if your usage justifies them.
Built-in smart-home radios are worth a look. Some routers include a Thread border router, a Zigbee radio or a USB port for a coordinator. That can replace a separate hub, but it ties your smart home to that router; replacing the router later means re-pairing devices. If you already own a hub or speaker that does the same job, do not pay extra for it. See what a Thread border router does.
Apartment, house or detached garage?
| Home | Practical setup |
|---|---|
| Apartment under about 1,000 sq ft | One Wi-Fi 6 router in a central spot, a guest network for IoT devices, UPS optional |
| Two-story home, 1,500–3,000 sq ft | 2–3 mesh nodes, wired backhaul if possible, router with wired ports for hubs |
| Large home or brick/plaster walls | Wired access points or MoCA/Ethernet backhaul; see MoCA vs powerline |
| Detached garage or workshop | Outdoor-rated access point on an Ethernet run, or a point-to-point bridge; see extending Wi-Fi to the garage |
Before you replace your router
- Change the default admin username and password and the network name. The FTC says to avoid names that include your name, address or router brand.
- Check your ISP’s rules. Some require their gateway for service or voice. In that case add your own router in access point mode or behind the gateway, according to the ISP’s instructions.
- Write down your current network name and password. If you keep the same name and password, smart devices often reconnect without re-pairing.
- Protect the router from power cuts with a small UPS; the UPS runtime calculator shows how long it will last.
Shop by need
Apartment or small home
What to look for: Wi-Fi 6, separate 2.4 GHz option, WPA3/WPA2 mixed mode, guest network, automatic firmware updates, 4 Ethernet ports
Typical price: $60–$150
See options on AmazonLarger home with dead zones
What to look for: mesh system with 2–3 nodes, Ethernet ports on each node for wired backhaul, app with device list and guest network
Typical price: $150–$450
See options on AmazonMany wired devices (hub, cameras, TV)
What to look for: unmanaged gigabit switch with 5 to 8 ports, metal case, no setup
Typical price: $15–$40
See options on AmazonRouter that doubles as a smart-home radio
What to look for: built-in Thread border router or Zigbee radio, Matter controller support, USB port
Typical price: $120–$300
See options on AmazonFrequently asked questions
Do smart home devices need a special router?
No. Most work with any current router. What matters is a stable 2.4 GHz connection, current encryption, enough capacity for your device count, and ongoing firmware updates.
Should smart devices be on a guest network?
It keeps them apart from your computers and phones, which the FTC suggests for cameras and similar devices. A guest network may block local control and casting in some routers, so check your router’s options.
Is Wi-Fi 7 worth it for a smart home?
Usually not. Wi-Fi 7 helps with fast downloads and heavy video on compatible devices. Smart plugs and sensors work the same on Wi-Fi 6.
Why won’t my smart plug connect to my new router?
Many smart plugs only join 2.4 GHz. Turn off band steering or separate the band names during setup, and use WPA2 or mixed mode if the plug cannot join WPA3.