Best smart home systems 2021: Reviews and buying advice

From smart light bulbs and thermostats that think for themselves to smart door locks, wireless security cameras, and all manner of sensors, today’s home automation technology can sound awfully sophisticated while actually being a messy hodgepodge of gizmos and apps. Installing all this stuff in your house is only half the battle. Getting it to work together smoothly and with a single user interface can be something entirely different.

Here’s the essential gear to get you there, which we’ve separated into two categories: all-around smart home systems, which are designed to coordinate a wide variety of smart home products, and security-focused systems, which are built around sensors and sirens.

You should also note that some of our picks are starter kits, consisting of a smart-home hub and a handful of devices, while others are just the hub. You’ll need to add the components you want to the latter, choosing from products certified by the hub manufacturer.

Updated April 6, 2023 to add a link to our SwitchBot Hub 2 review.

Best smart home systems

As we mentioned earlier, smart home systems come in a dazzling array of shapes and sizes, from brain-dead simple to vastly complex. Features vary just as widely, so you’ll need to pay more attention than usual when you’re narrowing down the field to find the product that’s right for you. Here’s a look at some of those key decision factors. To see how each system on the market measures up to those promises, drill down into the reviews at the end of the buyers’ guide.

Device support: Some smart hubs support only a small number of devices made by the manufacturer of the hub. Others offer certification programs for third-party devices and/or offer hooks into systems developed by third parties: Amazon (Alexa), Nest (thermostats, cameras, and smoke/CO detectors), and Google (Google Assistant) are the biggies here, but Apple’s HomeKit could become important later. It’s critical to consider all the devices you already have in your home, and whether the hub will support them. If the hub doesn’t support them, you might be looking at a massive upgrade later. As well, you need to think about what devices you plan to add to your network down the line.

IFTTT support: Many top smart home systems support IFTTT (If This Then That), the simple scripting system that lets you connect devices that otherwise wouldn’t be. For example, you could use IFTTT to turn all the lights in the house blue if a water leak is detected by your smart hub—even if it can’t speak directly to the lighting system itself. Stringify is a similar—and perhaps more sophisticated—service, but it has not yet gained as much traction as IFTTT.

Wired vs. wireless hub connection: Many smart hubs must connect to your wireless router via an ethernet cable, which limits your placement and, of course, requires a free ethernet port on your router. That can be an issue with the new generation of puck-like mesh routers that have just two ethernet ports (Eero, Google Wifi, TP-Link Deco M5, et al). A smaller number of hubs are wireless and can be placed anywhere in range of the router, increasing your flexibility.

Sensor range: If your home is large or spread out, you’ll need to pay attention to the range that the hub’s sensors support. Hubs may support a wide array of connection protocols, including Bluetooth, Wi-Fi, Z-Wave, and Zigbee, all of which have very different ranges. As with a wireless router, smart hub range can also be impacted by interference and device placement, and smart home devices themselves have different specs, as well. Take the time to look into the detailed specs to be sure sensors and third-party devices will actually work with your home’s infrastructure.

Battery backup: If the power goes out, your smart lights might not be useful, but other smart home features, like security sensors, rely on a hub that’s always on. Many smart hubs, even those that aren’t built around security, feature battery backups (either through rechargeable cells or standard AAs). Even a short power outage can cause a significant delay while the hub reconnects, so a battery backup makes sense in many home environments. If you like everything else about a particular hub that lacks a battery backup option, consider investing in an uninterruptible power supply to plug it into.

Mobile app usability: You’ll probably be interacting with your hub primarily through its mobile app, so you’ll want one that’s intuitive and powerful, with all the key features you use front and center. App-store screen shots and, of course, our reviews can help you get a sense of what you’re dealing with on the app side of things.

Overall complexity: This is a companion consideration to the mobile app, relating primarily to the audience for whom the smart home system was developed. Is the system geared at everyday users with limited customization needs? Or is it built with extreme flexibility in mind, to the point where the configuration decisions might overwhelm a novice user? Again, close attention to our reviews can help you gauge how comfortable you’re likely to feel with any system.

In addition to the above, the following considerations are primarily geared at systems with a security focus.

Sensor support: A companion consideration to the device support issue above, if you’re in the market for a security-focused smart hub, you’ll want one that has support for all the sensors you need. Most security hubs only work with the sensors made by the same manufacturer, so you can’t mix and match as you would with a general-use smart hub. Some security systems offer only a very narrow range of sensor types, while others have a wide variety to choose from.

Cellular radio backup: If you could simply cut the broadband connection to defeat a security system, it wouldn’t be much good, would it? Any good security system will include a 3G cellular backup that can be used in case your broadband connection drops. You should also carefully consider the battery backup consideration above, which is essential for dealing with power outages and is a standard feature on most security hubs.

Professional monitoring: If you don’t want to monitor your own security system 24/7, you’ll at least want the option to engage with a professional security company that can keep tabs on it for you when you’re out on walkabout. These invariably cost extra, which leads to our final consideration….

Service plan costs: Service plan costs vary widely from system to system, and many vendors offer a range of plans to choose from. Some systems will work without a service plan, allowing you to self-monitor. Some require a plan to function at all. Also note that lower-tier service plans might not include professional monitoring (Ring Alarm has one of the least-expensive plans: $10 per month with no long-term commitment). Price out service plans carefully before you pull the trigger.

Smart home hubs that didn’t make the cut

We’ve evaluated nearly all the other smart home systems that are worth talking about. Some of these have great features to recommend them, but none currently pose a threat to our top picks. Abode’s home security starter kit is virtually the same as the Abode Iota, with the key difference being the security camera integrated into the latter system’s hub. Both packages use the same accessories and sensors. Ecobee takes an interesting approach to home security, integrating its smart home hub into the company’s top-shelf smart thermostat. Ecobee also has a great home security camera, and the entire system is HomeKit compatible. The Hubitat Elevation smart home hub is favored by many hardcore smart home enthusiasts, and unlike the Aeotec Smart Home Hub, it doesn’t depend on a connection to the internet. But less-experience users will encounter a steep learning curve.

The Notion Starter Kit is an affordable security-focused smart home system that revolves around the company’s unique single-piece sensors, and Notion’s professional monitoring option is one of the least-expensive that you’ll encounter. But this system doesn’t support convenience-oriented smart home components such as smart bulbs or smart switches. A manufacturer’s TV commercials all too often oversell a crappy product, but that’s not the case with the SimpliSafe home security system. While it doesn’t support third-party accessories, SimpliSafe is an effective and affordable DIY home security system with affordable professional monitoring options. Budget smart home king Wyze Labs has a compelling home security offering that revolves around its low-cost components, and you can get the Wyze Sense Hub for free by signing up for a $99 one-year subscription that includes professional monitoring.