Wi-Fi 6 vs Wi-Fi 5 for IoT: Which Is Better?

What Wi-Fi 6 offers for IoT devices

Wi-Fi 6, introduced in 2018, was designed with dense environments in mind. The Wi-Fi Alliance notes that Wi-Fi 6 delivers higher data rates, greater capacity, and improved power efficiency for settings like large public venues and IoT deployments. For a home with many smart bulbs, plugs, sensors, and cameras, this means the router can communicate with more devices at once without slowing down.

Two key features matter for IoT. Orthogonal Frequency Division Multiple Access (OFDMA) lets the router share channels more efficiently, so multiple devices can transmit in the same transmission instead of waiting in line. Target Wake Time (TWT) schedules when devices wake up to send or receive data, which can extend battery life for battery-powered sensors. These are listing terms you might see on a router box; they explain how the router handles many small data packets, which is typical of IoT traffic. For more on OFDMA, see our OFDMA explainer.

• OFDMA: shares channels to increase efficiency and lower latency.
• Target Wake Time: improves network efficiency and device battery life.
• Multi-user MIMO: allows the router to handle more devices concurrently.

How Wi-Fi 5 compares for smart homes

Wi-Fi 5, introduced in 2014, was a major step forward for its time, offering dual-band operation and better power management. The Wi-Fi Alliance explains that Wi-Fi 5 products are mostly dual-band, using the 5 GHz band for high-performance applications and the 2.4 GHz band for basic needs like web surfing and IoT. This means a Wi-Fi 5 router can still support a smart home, but it lacks the efficiency tools of Wi-Fi 6.

For a small number of IoT devices, Wi-Fi 5 is often sufficient. Many smart home gadgets are simple and send small amounts of data, so they don't need the capacity of Wi-Fi 6. The trade-off appears when you have dozens of devices competing for attention; a Wi-Fi 5 router may become congested, while a Wi-Fi 6 router can manage the load more smoothly.

Range is a separate consideration. Wi-Fi 6 operates on the same 2.4 GHz and 5 GHz bands as Wi-Fi 5, so the physical range is similar. The actual range in your home depends on placement, walls, and interference, not just the standard. A Wi-Fi 6 router might have better beamforming, which can improve signal direction, but you should read the listing for features like 'transmit beamforming' and check the maker's page for details. For placement tips, see our router placement guide.

Reading router listings for IoT features

When comparing routers for a smart home, look for these terms on the listing: 'Wi-Fi 6' or 'AX' in the title, 'OFDMA', 'Target Wake Time', and 'MU-MIMO'. These indicate the router supports the efficiency features that help with many devices. A Wi-Fi 5 router might be labeled 'AC' and may not list these features.

The speed class, like AX1800 or AC1750, is a sum of the maximum theoretical speeds on all bands. It is not a promise of real-world speed. For IoT, the speed class matters less than the efficiency features, because smart bulbs and sensors use very little bandwidth.

Also check the number of bands. A dual-band router has 2.4 GHz and 5 GHz; a tri-band router adds a second 5 GHz band. For IoT, the 2.4 GHz band is often used because it travels farther and penetrates walls better, but it can be crowded. Wi-Fi 6's OFDMA helps manage that congestion. Learn more about dual-band vs tri-band.

Trade-offs: cost and range

Wi-Fi 6 routers generally sit in a higher price tier than Wi-Fi 5 models, but the gap has narrowed as Wi-Fi 6 has become common. If you are on a tight budget, a Wi-Fi 5 router can still handle a modest smart home setup. The cost difference is a trade-off: you pay more for Wi-Fi 6 to get better efficiency with many devices.

Range is not automatically better with Wi-Fi 6. Both standards use similar radio frequencies, so the range depends on the router's antennas, placement, and your home's construction. A Wi-Fi 5 router with good antennas might cover a similar area to a Wi-Fi 6 router. For larger homes, consider a mesh system, which uses multiple units to extend coverage. See our mesh vs single router article for more.

Another trade-off is device compatibility. Older IoT devices may only support Wi-Fi 4 or Wi-Fi 5. A Wi-Fi 6 router is backward compatible, so those devices will still connect, but they won't benefit from Wi-Fi 6 features. If most of your devices are older, the efficiency gains of Wi-Fi 6 may not be fully realized until you upgrade them.

What to pick for your situation

The choice between Wi-Fi 6 and Wi-Fi 5 for IoT depends on your device count, budget, and plans. If you have a growing smart home with many devices, Wi-Fi 6 is a better investment. If you have a few devices and want to save money, Wi-Fi 5 can work.

For a small apartment with a handful of smart plugs, a Wi-Fi 5 router is often enough. For a larger home with dozens of devices, a Wi-Fi 6 router or a mesh system with Wi-Fi 6 will handle the load more gracefully. Always read the listing for the Wi-Fi standard and features, and check the maker's page for specifics on OFDMA and TWT.

Remember that the site compares routers on stated details, not measured performance. Use the guides to narrow down options by standard, bands, and coverage, then verify the features on the maker's page. Check our best Wi-Fi 6 router guide and best mesh Wi-Fi system guide for recommendations.

What to pick for your situation

Questions

Does Wi-Fi 6 improve IoT battery life?

Wi-Fi 6 includes Target Wake Time, which schedules when devices wake up to communicate. This can improve battery life for battery-powered IoT devices, but the actual effect depends on the device and how it uses the feature.

Will my old IoT devices work with a Wi-Fi 6 router?

Yes, Wi-Fi 6 routers are backward compatible with older Wi-Fi standards like Wi-Fi 5 and Wi-Fi 4. Older devices will connect, but they won't use Wi-Fi 6 features like OFDMA or TWT.

Is Wi-Fi 6 faster than Wi-Fi 5 for smart home devices?

Wi-Fi 6 can handle more devices concurrently and reduce congestion, which can make the network feel faster when many devices are active. However, individual IoT devices typically use little bandwidth, so the speed difference is not always noticeable.

Do I need Wi-Fi 6 for a few smart plugs?

No, a Wi-Fi 5 router can handle a small number of smart plugs without issue. Wi-Fi 6 becomes beneficial when you have many devices that could cause congestion.

Does Wi-Fi 6 have better range than Wi-Fi 5?

Not necessarily. Both use similar frequencies, so range depends on the router's design and placement. Wi-Fi 6 may have better beamforming, but the physical range is similar.