The 10 Best Smart Thermostat Devices for Your Home

Listen to the Goldilocks in you – enjoy a room temperature that’s never too hot, never too cold, but always just right!

There are at least two reasons why you should love smart thermostats.

On one hand, these clever little devices will make sure your home is always at the perfect temperature. It doesn’t matter if you’re trying to get away from the scorching heat in the summer or need to warm your frozen bones during the cold winter nights – a smart thermostat will create an optimal micro-climate anytime of the year.

But it’s not just about comfort; the best smart thermostat for your home will perform another extremely important role. If it does its job properly, it will keep your monthly bills from exploding through the roof. Many people don’t realize just how much money they can save every month by using smart, economical thermostats. These devices often pay for themselves in a couple of years, sometimes even months.

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10 Best Smart Thermostats 2019

Ecobee Smart Thermostat Review

Ecobee Smart Thermostat Review - best smart thermostat
PROS
  • Elegant design

  • Built-in Alexa support

  • Occupancy sensor

  • Learning thermostat

CONS
  • Steep price

  • You only get one SmartSensor

Design

Ecobee’s new voice-controlled smart thermostat has a beautiful design that combines functionality and elegance. The color touchscreen is protected by a layer of glass that’s barely noticeable, while the thermostat itself features two digital microphones with echo cancellation and a powerful speaker at the bottom. The LED lights at the top show you whether voice control is active or not, while the 12 terminals at the back allow you to connect the device to a dozen HVAC appliances in your home. The thermostat also comes with the equally elegant SmartSensor, which you can place in a room that’s beyond the thermostat’s range. 

Features

This is a remote sensor thermostat, so the more sensors you have in your home, the more accurate your thermostat becomes. That way you can even out the temperatures across different rooms and avoid creating cold or hot spots. The occupancy sensor preserves energy when you’re away from home and gets everything up and running as soon as you come back.

One interesting feature we would like to single out is the “follow me” mode, which keeps track of which rooms are in use and only adjusts the temperature in those rooms. This Ecobee model is one of those intelligent, learning thermostats that over time adapt to your habits and offer smarter temperature control based on how you live. 

Installation & Use

When you buy an Ecobee thermostat, you also get a detailed instruction manual to guide you through the setup process. However, before you make a purchase, you should head to the company’s website and check the device’s compatibility with your HVAC. Everything is explained in great detail with diagrams and pictures so you won’t get lost.

Although you can use the dedicated app to control the temperature or do things manually through the interface, voice control makes everything a lot easier. The thermostat has built-in voice support powered by Amazon Alexa, but it also works with Google Assistant and Apple HomeKit.

Price

This Ecobee thermostat costs $249. It comes with one SmartSensor and all the necessary Ecobee installation equipment you need. Considering the rather high price, it’s no wonder that the company also offers a three-year warranty and 30-day money back guarantee.

Nest Learning Thermostat Review

Nest Learning Thermostat Review - best smart thermostat
PROS
  • Simple Nest thermostat installation

  • Focus on saving energy

  • Automatic programming

  • Numerous great features

CONS
  • Steep price

  • You have to pay extra for smart sensors

Design

The third-generation learning thermostat from Nest has a bigger screen than the previous versions, so the display appears even simpler and cleaner in design. The device is controlled by an outer ring that can be pressed and turned to select features or adjust the temperature. Energy saving is an important selling point for Nest’s products, and eco-friendly features are subtly integrated into the display. Each time your temperature control saves energy, you’ll see a leaf icon appear. Of course, this energy-saving technology adapts to your personal preferences over time.

Features

Learning and adapting to users’ needs has always been the main focus of Nest products. After about a week of use, the device will create a well-functioning energy-saving schedule that fits your lifestyle. All of this is done automatically, so you don’t have to program anything yourself. The motion-detection feature knows when you’re away from home, maximizing energy efficiency and saving you up to 12% on heating and up to 15% on cooling bills.

In addition to all that, this Nest learning thermostat is full of little details that make all the difference. The geofencing allows for more accurate motion detection and, hence, an improved away mode. The sunblock feature stops your thermostat from being affected directly by rays of sunshine. There’s also the time-to-temp feature, which tells you exactly how much time it will take for the system to achieve your desired temperature.

Installation & Use

The installation process takes only about half an hour. As is the case with Ecobee, which takes first place in our list of smart thermostat reviews, Nest’s website also offers a detailed guide and a compatibility test beforehand. There is also a video tutorial that offers step-by-step instructions for DIY users.

Since the thermostat is compatible with Google Home and Alexa, you can easily control the device using your voice. However, you also need the specialized Nest app. As you’d expect, the app lets you adjust the temperature remotely, but it also gives you a detailed report on your energy usage on a daily and monthly basis.

Price

The single pack for this Alexa thermostat costs $249, the same as the Ecobee product we’ve already reviewed. While the kit gives you all the necessary installation equipment, you’ll need to spend some extra cash to get a stand-alone sensor. That said, with this purchase, you’ll be eligible to receive discounts for other complementary Nest products, which is a good thing if you’re working towards creating a modern smart home.

Honeywell T9 Review

Honeywell T9 Review - best smart thermostat
PROS
  • Best smart thermostat for multiple zones

  • Simple installation for existing users

  • Alexa, Cortana, and Google Assistant support

  • PayPal credit payment

CONS
  • No HomeKit support

  • You need to pay extra for sensors

Design

From a design point of view, the Honeywell T9 doesn’t offer anything fancy or futuristic. The square-shaped device looks rather simple and suits the aesthetics of an average American home. One of the main selling points of this Honeywell digital thermostat is that it can monitor several rooms at once and create different temperatures based on your priorities. The display gives you an uncomplicated representation of all the values in the home so you can adjust them with a flick of a finger.

Features

Honeywell’s thermostat relies a lot on the use of its far-reaching smart sensors. You should place these all around the house to create different temperature zones. If you opt for automatic regulation, the thermostat will use its motion-detection technology (together with geofencing) to create the ideal climate in the occupied rooms. Honeywell thermostats also use patented Smart Response technology, which makes sure rooms always reach their target temperature on time.

Installation & Use

Because the T9 thermostat uses the same wall mount as the other T-series models, existing customers will save a lot of time during the installation process. All they need to do is replace the actual device on the wall, which takes only a few minutes. As for other users, the Honeywell thermostat manual offers a truly comprehensive and easy-to-follow guide to help you install the device without any drama.

T9 supports a number of voice assistants, including Alexa, Cortana, and Google. In fact, any device that displays a “Works with Honeywell” logo can support this thermostat. However, it’s worth noting that this particular model isn’t compatible with Apple HomeKit. The wireless thermostat app works smoothly and provides you with special alerts when temperatures are too high or low in your home.

Price

The T9 thermostat alone costs $169.99, but that’s without the smart sensors, which cost $39.99 a piece. You’ll get a small discount if you go with pre-made bundles or choose special offers from retailers like Amazon. You also have the option to pay for the device using PayPal credit with no interest over six months. There is also a host of other package options you should look into before making the purchase.

Lux Kono smart thermostat review

Lux Kono smart thermostat review - best smart thermostat
PROS
  • Affordable price

  • Customizable faceplates

  • Geofencing for occupancy detection

  • C-wire alternative included

CONS
  • No IFTTT support

  • No additional room sensors

Design

When it comes to design, it’s fair to say Lux has taken an unusual approach with this model. The thermostat is divided into four panels, with the display on the top-left and the knob on the bottom-right. The whole faceplate can easily be replaced and customized, so you can play with the colors as much as you like. You control the temperature by turning the aluminium knob, which also grants you access to the menu.

Features

One of the main reasons people look for the best smart thermostat in the first place is to save energy. According to Lux, households that use this device save an average of $174 a year. How does Kono do it? Will, it comes down to switching between home and away modes with the use of geofencing technology. Whenever you leave the house, the thermostat switches to away mode for maximum efficiency. 

Another interesting feature worth noting is the IAQ mode. When turned on, this mode lets fresh air circulate, even when you’re not cooling or heating your home. That way you don’t have to change the temperature of your house to enjoy some fresh, pure air.

Installation & Use

The thermostat wiring process for this device is simple, as is the case with most other top manufacturers on the market. Lux’s Kono model provides you with a comprehensive installation manual that explains all steps of the process. Even if you don’t have the C-wire that is usually needed for thermostat installation, Lux offers its own replacement in the form of the Lux Power Bridge.

The thermostat is compatible with all the major voice-controlled systems, including Amazon Alexa and Google Assistant. The device also works with Apple HomeKit, meaning you can connect it to other smart home appliances. Interestingly, though, there doesn’t seem to be any support for IFTTT.

Price

The price of this C-wire thermostat is $152.99, although that’s just the manufacturer’s suggested retail price. You can find the device on Amazon for as little as $100, which makes it quite affordable. However, you won’t get any additional sensors with this purchase.

Bosch Connected Control BCC100 Thermostat Review

Bosch Connected Control BCC100 Thermostat Review - best smart thermostat
PROS
  • Large and clear display

  • Five different temperature changes a day

  • App gives you control of multiple thermostats

  • Works with Amazon Alexa

CONS
  • No IFTTT support

  • No geofencing abilities

Design

With the BCC100 Bosch thermostat, it seems like the designers really weren’t going for an ultra-modern, futuristic look. Instead, they focused on creating a solid user experience with a large, simple interface. In essence, the BCC100 just looks like a tablet installed onto a wall and, in many ways, that’s what it is. You can set up the temperature, choose the working mode, or create a schedule using the highly responsive touchscreen.

Features

The thermostat functions mainly through user-defined schedules, so you might need to invest some time in creating a comfortable environment for yourself. The device allows you to create a heating and cooling schedule on a daily and weekly basis, with up to five different temperature changes a day. You can create two different profiles for home and vacation to get the most out of your thermostat throughout the year. However, this device doesn’t seem to support the thermostat geofencing feature.

Installation & Use

To install the BCC100, you only need to follow the instructions included in the box. The only problem you might encounter is if you don’t already have a C-wire, as this part is not included. Unlike the Lux Kono, this thermostat offers no alternatives that might help you solve this potential issue. If you don’t have a C-wire, you’ll simply have to hire a professional to install the device for you.

Besides the touchscreen, you can also use the Bosch Connected Control app to set up temperatures and manage up to four different schedules per thermostat. Basically, with a single app you can control multiple smart home thermostats, if you need to. While there is no IFTTT support, BCC100 works well with Amazon Alexa.

Price

The Bosch BCC100 thermostat goes for around $150, but there are also better deals to be found on the web from time to time. Although this is not a bad price, it might be too much for a product that relies a lot on user-created schedules.

Emerson Sensi Smart Thermostat Review

Emerson Sensi Smart Thermostat Review - best smart thermostat
PROS
  • Built-in humidifier

  • Early start feature

  • Alexa, Google Assistant, and Siri support

CONS
  • Somewhat expensive considering the lack of features

  • Geofencing in beta mode

Design

Let’s be honest; it’s highly unlikely you’ll be impressed with the design of the Emerson Sensi Touch thermostat when you first see it. The device looks fairly simple and a bit outdated. This is mostly due to the fact that there is a thick black area around the display, making it seem even smaller than it actually is.

When it comes to the actual interface, though, Sensi has everything you need. The display shows the temperature and humidity, and allows you to set the values you want. The menu option lets you put the device into sleep mode, change the back glow, and even customize what you see on the home screen, which is certainly a nice touch.

Features

Sensi geofencing is, unfortunately, not up to par with most other thermostats on the market. The geofencing option on this device is only in its beta mode, which means it could be buggy and incomplete. Geofencing tracks your location through your phone and lets your thermostat know when you’re not home. That way, it can automatically turn off HVAC appliances to save energy and money. All this said, even in beta, geofencing is a step in the right direction.

The thermostat also offers a so-called “early start” feature, which calculates the time needed to achieve a desired temperature so there’s no guesswork on your part. In addition to that, this smart home thermostat also has a built-in humidity sensor.

Installation & Use

The installation itself won’t take more than 15 minutes. The instruction manual will guide you through the process but, as always, you can also call a professional to install it for you. As is the case with most other smart thermostats on the market, this one also requires a C-wire, so if you don’t have it, it could be a slightly more expensive venture.

While we wouldn’t call the Sensi the best best programmable thermostat, we like the fact that you can use the app to control all the settings and monitor your home temperatures from afar. The app is simple and intuitive, so you will quickly find your way around it. The Emerson Sensi is compatible with all three major voice assistants on the market: Amazon Alexa, Google Assistant, and Siri. 

Price

The cost of this device is $169, which isn’t at the higher end of the market, but it’s not exactly cheap, either. For this price, you get a three-year warranty and a 30-day satisfaction guarantee.

Johnson Controls GLAS Review

Johnson Controls GLAS Review - best smart thermostat
PROS
  • Cool OLED translucent screen

  • Indoor and outdoor sensors

  • Smart scheduling feature

  • Alexa and Google Assistant support

  • C-wire adapter included

CONS
  • No geofencing feature

  • Expensive

Design

Of all the smart thermostats reviewed in this article, the Johnson Controls GLAS model probably has the most interesting design. This is mainly thanks to its OLED see-through screen, which gives off a uniquely futuristic vibe. The thermostat can be controlled via the touchscreen or the dedicated app. The display shows you your energy savings and air quality, and also lets you create a schedule according to your needs. The screen is highly responsive, intuitive, and easy to maneuver.

Features

The way this device monitors air quality is nothing short of impressive. Indoors, it monitors the humidity and the amount of volatile organic compounds in the air, as well as CO2 levels. In addition to that, the Johnson Controls GLAS thermostat also measures the air quality outside so that you know what to expect when you leave the house. It can also warn you about the presence of pollen, which is more than useful if you suffer from allergies.

The Johnson Controls GLAS model has a smart-scheduling feature, which allows it to learn your habits and modify the HVAC system for maximum energy savings. Besides that, GLAS uses an occupancy sensor to save energy when you’re away from home.

Installation & Use

Most modern smart thermostats are extremely simple to install, and the same can be said for GLAS. There is one slight problem, though. Because it has a see-through screen, you’ll need to patch up any holes from your previous thermostat. This is a bit of a hassle, but you it’s worth it if you want one of the coolest top thermostats by the end of it. If you don’t already have a C-wire, the box comes with its own adapter.

The app lets you remotely control the temperatures in your home and check a range of reports, including air quality and energy savings. Since it supports Alexa and Google Assistant, you can set this thermostat up to be voice-controlled.

Price

As you’d expect, this product is fairly pricey. However, for the extra money, you get what is probably the best thermostat design in terms of its aesthetics. So, what prices are we talking about? The thermostat costs $249 and comes with the manual, C-wire adapter, all the necessary screws and anchors, and a paintable backplate.

Mysa Smart Thermostat Review

Mysa Smart Thermostat Review - best smart thermostat
PROS
  • Elegant minimalistic design

  • Ability to set up different zones in your home

  • Works with high-voltage systems

  • Works with all of the major voice assistants

CONS
  • The screen shows only the temperature

  • Somewhat complex installation

Design

One of the first things you’ll notice about this Mysa model is that it has a minimalistic design that consists solely of a white surface and dot-matrix display. All you can see on the screen is the current temperature, which you can adjust with the up and down arrows. While the minimalistic look is certainly elegant and interesting, unfortunately it doesn’t provide as much information as you might need.

Features

Mysa lets you create your own schedule through the app, but if you don’t feel like wasting your time, you can just opt for the quick schedule option, where the thermostat smart device organizes your heating and cooling based on energy-saving statistics. With the vacation mode, you can save quite a lot when you’re away from home for a longer period of time. The thermostat also uses geofencing technology to keep track of your home occupancy automatically and adjust energy-saving plans.

The zoning option is perfect if you want to separate different parts of your home with a couple of thermostats. While it’s not exactly a cheap decision and most users have no need for it, it’s still good to know that the feature exists.

Installation & Use

Probably the main reason users opt for a Mysa thermostat is that it works with high-voltage systems, unlike most other thermostats on the market. Having a high voltage thermostat means you have to deal with a slightly more complex installation process, but the company provides you with a detailed manual to guide you through the process.

There’s no doubt that the app follows the minimalistic design of the device itself. You can control the temperature remotely or organize various zones around the house if you have numerous devices. The thermostat is compatible with Alexa, Google Assistant, Apple HomeKit, as well as Samsung SmartThings and IFTTT.

Price

The Mysa Smart thermostat is relatively affordable compared to competition at $139 per unit. You can get an even better discount if you bundle your purchase with more than three devices. For example, if you buy five of these WiFi enabled thermostats, you’ll get a $100 discount. If you take into consideration that, according to Mysa, the device helps you save up to 26% on your energy bill, this might not be a bad deal.

Sensibo Sky Smart Thermostat Review

Sensibo Sky Smart Thermostat Review - best smart thermostat
PROS
  • Shared controls

  • Climate react mode

  • Amazon Alexa and Google Assistant support

  • IFTTT compatible

CONS
  • No display

  • Uses a USB cable

Design

Unlike most other smart thermostats on the market, the Sensibo Sky doesn’t have a display, which is quite peculiar. There are no physical controls on the device; you have to use the mobile app to control it. Another strange design choice that makes it stand out from many other thermostats on the market is that it uses a power adapter as its main energy source. As such, the USB cable sticking out from the device affects its aesthetics.

Features

The control-sharing feature lets all members of your household take control over your HVAC system. You can even match devices to specific appliances to allow everyone to create their own micro-climate. The Sensibo Sky uses geofencing technology to figure out when you’re away from home and automatically turn off HVAC to preserve energy.

The internet thermostat also possesses a so-called “climate react” mode, where the device reacts to specific triggers you set beforehand. You can set the temperature or humidity levels as the trigger, or create your own custom comfort parameters.

Installation & Use

This Sensibo thermostat is very easy to set up and connect to devices in your home. You will have to do a bit of manual syncing, but the whole process is fairly simple. All you need to do is connect the device to a power source and your Wi-Fi network. Getting the power through the USB cable doesn’t look elegant but it certainly makes things a bit easier.

Interestingly, besides the phone app, you can also control the thermostat through Sensibo’s website. This probably isn’t a more convenient choice, but it’s nice to have the option, especially if you can’t find your phone. The Sensibo Sky is an Alexa compatible thermostat that also works with Google Assistant, meaning all functions can be voice-controlled. Of course, the thermostat is also compatible with IFTTT.

Price

The regular price for one Sensibo Sky thermostat is $150, although you can take advantage of some seasonal discounts and special offers if you bundle several devices together. The box comes with a single USB cable and various power adapters to suit your specific needs.

iDevices Thermostat Review

iDevices Thermostat Review - best smart thermostat
PROS
  • Affordable price

  • Supports Alexa, Google Assistant, and Siri

  • Customization option in the app

CONS
  • Lack of top features

  • C-wire adapter costs extra

  • Overly simple design

Design

While the design of the iDevices thermostat isn’t comparable to those you’d find among the best thermostats in 2019, it is an elegant and simple choice that fits into the aesthetics of most contemporary US homes. The actual display is rather small and shows you just the temperature, while the buttons on each side let you navigate through the options. There are no touchscreen capabilities, but they really aren’t necessary. Since it offers support for three of the most popular virtual assistants, you can simply use voice controls or the app.

Features

To be perfectly honest, this iDevices thermostat isn’t exactly overflowing with features. It’s a modest option, and that’s reflected in its price. That said, the device still has enough to offer.

The pre-heat and pre-cool features allow your home to gradually reach the desired temperature to fit your schedule. This WiFi enabled thermostat also lets you use what the company calls the “deadband” feature. It helps the device preserve energy in its automatic mode by defining a temperature range where you feel comfortable. If the temperature is within the limits, the thermostat doesn’t have to juggle between heating and cooling to reach a specific value every time.

Installation & Use

The standard size of the device and its conventional shape mean that you will have no problem replacing your old programmable thermostat with this one. Of course, like most other thermostats on the market, this one also needs a C-wire, which doesn’t come included with the product. If you don’t have it, you’ll need to pay extra for the adapter. This aside, the installation process is fairly simple.

As we’ve mentioned before, iDevices thermostat supports all of the major virtual assistants like Amazon Alexa, Google Assistant, and Siri. That is one of the main reasons why most users don’t care about the thermostat’s lack of touchscreen – it’s easier to rely on voice-control tech instead. The app lets you personalize your schedule any way you want, and everything runs smoothly and efficiently.

Price

According to the company’s official page, a single device costs $99.95. However, you can certainly get better deals on websites like Amazon, so you might need to do a bit of digging to find a better price for this, the best budget smart thermostat on the market. You can also combine the thermostat with other devices like smart speakers to save on shipping costs or get valuable discounts.

How to Choose the Best Thermostat

Because we know our readers won’t settle for anything less than perfect, we’ve come up with a special methodology to help us assess every device on the market and select only the best smart thermostats on offer. Here is how we do it:

Design

Since thermostats are usually placed in the center of your home, it’s important that they match the interior in style and tone. In addition to that, since you will be interacting with them on a regular basis, you need something simple, efficient, and intuitive. In this section, we analyze both the appearance and the functionality of the device to get a general sense of the product. There’s no need to sugarcoat it – if it doesn’t look good or its interface is too chaotic to use easily, the thermostat won’t be anywhere near the top of our list.

Features

After we’re done with the design, we examine the most important features that we consider must-haves when writing our WiFi thermostats reviews. Basically, we’re going to tell you what makes each thermostat worthy of your time and money, and why it stands out from the crowd. Sometimes these features are expected and reasonable; sometimes they’re bold and innovative. We go through the list and cherry-pick the ones we deem essential.

Installation & Use

Smart thermostats are usually built for users who love the DIY approach but don’t actually want to tear their walls down to make a complicated piece of electronic gear work. If you need to invest hours of your precious time into installing the best smart thermostat, it obviously isn’t that smart (or, indeed, the best). Top-rated companies will always provide you with a high-quality manual, a compatibility test, and customer support should you encounter any problems.

Price

Money is always a touchy subject, but it’s our duty to mention the price and value of every thermostat we review. Smart thermostats can be expensive, especially when you include the sensors and various other pieces of equipment they need to function properly. In our quest to find the best value WiFi thermostat, we check to see the latest deals available, give our assessment of the cost, and tell you plain and simple whether it’s worth it or not. We wouldn’t want you to miss out on a good thing simply because the price is deceptively steep or unclear. As we assess these devices, we try to put ourselves in your shoes.

FAQ

Is a smart thermostat worth it?

Department of Energy statistics show that Americans save an average of 10% a year on their heating and cooling bills just by using programmable thermostats. Some smart thermostat manufacturers claim their devices can help you save an amazing 26% of your energy bill, which means the device will pay for itself within months or a few years.

Do Nest thermostats really save money?

According to Google, Nest thermostats save an average of 10-12% on your heating bills and around 15% on your cooling bills.

What is the best home thermostat?

Some of the best home thermostat devices on the market are the Ecobee Smart thermostat, which features voice control, the third-generation Nest Learning thermostat, and Honeywell T9. Of course, there are also many other amazing products out there depending on what you’re looking for, so make sure you go through our list and see what’s the best smart thermostat for your needs.

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