Best Smart Thermostats of 2021

Smart homes need the best smart thermostats to keep your family at home solace and cozy or cool smartly!

So we have compiled up the best smart thermostats for you that are reliable and of top quality and just according to your needs.

The best smart thermostats can efficiently save your money on power, keep your home comfortable, and learn your habits and preferences quickly. These best smart thermostats are easy to install, highly customizable, and flexible. This buyer guide has selected the top 10 best smart thermostats that are super high tech, remotely controllable, affordable, and come with many programmable options. All of them are highly recommended. Have a look to know more about their features and specifications.

Things to keep in mind while buying the Smart Thermostat:

1.) Compatibility.

2.) Sensors.

3.) Connectivity.

4.) Durability.

Best Smart Thermostats Comparison

Best Smart ThermostatsFeaturesSensorCompatibilityConnectivity 
Google Nest Thermostat – Smart Thermostat for Homewhite color screen, HVAC system, support heating systems, programmable thermostat, saves energyMotion sensorIOS, Android, Kindle FireWi-FiCheck Price
EcoBee 3Learning software, free coolingMotion sensor, Humidity sensorSmartphone, Apple Homekit enabledWi-FiCheck Price
Honeywell Wi-Fi Smart ThermostatColor LCD, seven day scheduled program, shows indoor temperature, relative humidity, outdoor temperatureHumidity sensorMobile AppWi-FiCheck Price
Honeywell Z-Wave Enabled Programmable ThermostatMessages from other HVAC equipment, interface for temperature adjustment on a 7-day schedule.Temperature sensorMobile AppsTouchscreenCheck Price
Nest Learning Thermostat (3rd generation)Updated software and hardware, learning mode, simple user interface, Auto-Away feature, bright screen, temperature display and management, cool to dry and airwaveoccupancy sensorSmart Home productsWi-FiCheck Price
Emerson SensiCustom temperature schedules, Early Start, AC protection, boost feature —Sensi Mobile App, EcoWi-FiCheck Price
Honeywell Lyric T5Geofencing, Auto changeover program, learning software, smart alert optionRemote sensorLyric AppWi-FiCheck Price
Ecobee3 Lite Smart Thermostat7-day programmable, 3.5-inch glossy black digital display, touch screen interface, manage temperature, set schedules, Alexa and Siri voice controlTemperature and Motion sensor.EcoBee appWi-FiCheck Price
Emerson Sensi Touch Wi-Fi Smart ThermostatTouchscreen color display, HVAC system, support heating systems, learning software, saves energyTemperature home compatible. Alexa, google assistant and Apple Homekit, Samsung smart things WiFiCheck Price
Schneider Electric Wisertouch screen display, comfort boost featurelight and humidity sensorsWindows 10, IOS, and AndroidWi-Fi, IFTTTCheck Price

Google Nest Thermostat 

Google Nest smart thermostat is as nicely designed as your smartphone. It is available on multiple color screens. It can be remotely controlled using an app. The Wi-Fi-enabled Nest can successfully support more types of heating systems such as heat pumps and radiant floor systems. Also, it can recognize how long it takes to heat or cool a house based on the type of HVAC system installed. It does not waste energy resources by micro-managing the temperature on systems that might take longer to regulate comfort levels. With the circular design, it perfectly fits over holes and comes with easy-to-follow instructions, that is why it is remarkably convenient to install.

Moreover, you don’t need to worry about stringing a power line through the wall or replacing batteries to power the thermostat due to the presence of Nest’s built-in 2 AAA batteries. It comes with a backplate to cover large holes, labels to mark the right wires, and a small screwdriver. Another interesting feature is that the system learns your preferred setting on particular days and after a week, it starts making changes on its own. In addition to that, if no one passes by the motion sensor for a certain period of time, the Google Nest thermostat switches into ‘Away mode’ and turns down the heater or AC according to the presets. Lastly, it has apps for Android, iOS, and Kindle Fire devices. Nest thermostat is ideal for those who want to save energy with smart temperature management options.

Isn’t it an interesting, yet one of the best smart thermostats?


1 Google Nest thermostat is very easy to install.

2 It efficiently works with various heating and cooling systems.

3 It automatically learns the user’s heating and cooling habits.

4 Through a smart thermostat, you can control heating and cool remotely.

5 Easy to install and use.

6 It works with 85% of systems.

Ecobee 3 Smart Thermostat With Sensors

Ecobee3 Lite Smart Thermostat
Ecobee3 Lite Smart Thermostat

Searching for some smart thermostat that has some outstanding features? Something that has some more smart sensors you could ever imagine? Well here’s the deal…

EcoBee 3 smart thermostat boasts various features that make it stand out from the crowd. It features smart specifications that you can expect from any card-carrying thermostat including smartphone connectivity, learning software, Wi-Fi, and much more.  The EcoBee 3 smart thermostat comes with remote sensors that you can place around your home, enabling the device to understand what room you are in and adjust accordingly.

For setup and installation, first download the ecobee app from the app store.

Moreover, it has extra hardware which is pretty cool and makes the system much more accurate. One of the interesting features of the EcoBee 3 is free cooling.

It recognizes the temperature difference on cool summer evenings and uses the outside air to effectively cool down your home without using the air conditioner. In this way, it saves both power and money. Another additional feature is the ability to detect and adjust humidity.

It identifies the expanse of moisture in the air, takes comparative humidity, and adjusts itself. It can even control indoor humidity to prevent frosting. At times, the thermostat also uses an air conditioner when required.

Cool, isn’t it?


1 EcoBee 3 is Wi-Fi enabled and offers smartphone connectivity.

2 It gives many smart features such as Free Cooling.

3 It comes with learning software and extra hardware.

4 It offer easy and quick installation.

Honeywell Wi-Fi Smart Thermostat

Best smart thermostats of 2020(Honeywell Wi-Fi Smart Thermostat
Honeywell Wi-Fi Smart Thermostat

Up to buying something beautiful yet best specifications? Much more customized?

Here’s what we have just for you…..

Honeywell Wi-Fi Smart Thermostat, that features a bright and beautiful screen. It is remarkably flexible and programmable thus allowing you to set it up easily. It comes with seven days scheduled program and keeps you well informed about any changes in indoor climate with the easy to read color LCD. Moreover, you can customize the LCD as per your taste.

The screen will show you the indoor temperature, relative humidity, outdoor temperature, and much more. It lets you control the thermostat through the mobile app, and the thermostat will learn about your activities over time. Also, it tells you when you should change the air filter in your furnace for optimum efficiency. Overall, Honeywell Wi-Fi Smart Thermostat offers you ease of use and setup, a highly customizable schedule, automatic temperature changes along additional features at quite an affordable rate.


1 Honeywell Wi-Fi Smart Thermostat features a bright and beautiful LCD screen.

2 It keeps you regularly updated about the indoor climatic changes.

3 It has a highly customizable schedule and offers precise automatic temperature change features.


1 The installation will depend on your experience with wires and the types of heating and cooling systems you have.

Honeywell Home Programmable Thermostat

Honeywell Z-Wave Enabled Programmable Thermostat
Honeywell Z-Wave Enabled Programmable Thermostat

Honeywell Z-Wave Enabled Programmable Thermostat is compatible with a wide range of products and apps that allow you to control each aspect of your home. From the lighting and other appliances to your heating and cooling, your phone or tablet or any other internet-connected device acts as the best controller.

If you are looking for something compatible with numerous platforms, Honeywell-Z is just the perfect and best thermostat you need.

The thermostat has a number of programmable features such as a simple interface for temperature adjustment on a 7-day schedule, the option of getting messages from other HVAC equipment and much more. The device is also able to work without the use of a C wire just so that you can quickly and conveniently install it in places. The Z-Wave smart home and automation platform makes the device worth investing in. As a whole, the device effectively works with several apps, services, and platforms.


1 Honeywell Z-Wave Enabled Programmable Thermostat is compatible with tons of apps, services, and platforms.

2 It gives you an interface for temperature adjustment on a 7-day schedule.

3 It gives you the option of messages from other HVAC equipment.


1 It uses C wire or a separate wire saver for power.

Nest Learning Thermostat (3rd generation)

Nest Learning Thermostat (3rd generation)
Nest Learning Thermostat (3rd generation)

The 3rd generation already signifies the smart thermostat is already upgraded to meet all your requirements and needs to bring about the best, just for you.

Nest Learning Thermostat (3rd generation) features an impressive learning mode, a simple user interface, and compatibility with a variety of smart home products. It acts as an independent and responsive device that effectively controls the comfort of your home. The model is very appealing and comes with a tactile metal ring that glides smoothly, works consistently, and feels nice in your hand. It has a 40% larger and bright screen than the previous model to display a digital or analog clock, current temperature, and the current weather forecast.

Here’s a bit of detail of the sensors it has to comfort you…..

The device has a built-in occupancy sensor that senses your presence and absence and creates a schedule accordingly. It also uses machine learning algorithms to model thermodynamics and learns how quickly your home cools or gets warmed and how your system performs. Moreover, it has some additional features such as cool to dry and airwave that combat hot summers by cooling and reducing humidity. When the AC is turned off, it uses a fan thus saving your energy and money.

The thermostat comes with automatic software updates and offers you family accounts, home/away assistance, and much more. Nest thermostat also offers you an Auto-Away feature to lower the HVAC’s energy usage when it senses no one is at home making it another one of the best smart thermostats.

Smart, right?


1 Nest Learning Thermostat (3rd generation) comes with updated software and hardware.

2 It gives you various display options.

3 It effectively uses machine learning algorithms.


1 At times, the reported temperature is plus or minus 3 degrees.

Emerson Sensi

Emerson Sensi
Emerson Sensi

Emerson Sensi offers you the easiest ways to conserve energy with maximum home comfort qualifying the standards of being the best smart thermostat comparable to any other. The Wi-Fi programmable thermostat allows you to create custom temperature schedules. While using the app, you can select the days you want to follow a particular schedule and choose temperature and time setpoints. Also, you can run heat only or cool only schedules. The Temperature Offset allows you to change the temperature display +/- 5 degrees to match your prior thermostat.

Amazing? Feeling pro customized?

In addition to that, the Sensi mobile app comes with several features and advanced thermostat settings that make it more energy-efficient and protect your HVAC equipment. One of the interesting feature is Early Start that tells your thermostat when to start the cooling or heating system and make sure that your home is at the right temperature.

Moreover, the AC protection feature will delay cooling for some time when the cooling system is turned off to prevent any potential damage. The boost feature will provide you maximum comfort and quickly activate all the available heating and cooling stages when the temperature is manually changed. Lastly, the cycle rate on Sensi mobile app regulates how fast your heating or cooling system delivers the setpoint temperature, and you can adjust it as per your requirements.


1 Emerson Sensi offers you temperature offset, cycle rates, and boost features.

2 It is the first Wi-Fi thermostat to meet new energy-aware standards that require plus or minus 1 degree of accuracy in temperature control.

3 It is Eco-compatible.



Honeywell Lyric T5

Honeywell Lyric T5
Honeywell Lyric T5

Looking for something cool? Something smarter at a touch to being compatible with your favorite platforms, right? Well, here’s what you need then…..

Honeywell Lyric T5 smart thermostat has a glossy black finish design. It has a gray trim with a touch-sensitive feature. It is accessible through the Lyric App for Android and iPhone. The thermostat uses geofencing to set custom Home and Away distance so your phone can make changes automatically. It features an Auto changeover program that decides whether the thermostat should be set to heat or air conditioning.

The device gives you a very smart response since it’s one of the high rated best smart thermostats. It quickly learns your routines and set heat or AC to the temperature you desire. Moreover, with the smart alert option, you can opt into alerts based on your need to change a filter and extreme temperatures. Finally, you can avail all of the standard features of the Honeywell Lyric T5 smart thermostat at extremely affordable rates.


1 Honeywell Lyric T5 is quite affordable.

2 It features efficient learning software.

3 It allows you to opt the alerts based on your need to alter the filter and temperatures.


1 It does not integrate with Google Home, IFTTT, Wink or SmartThings.

Ecobee3 Lite Smart Thermostat

EcoBee lite smart thermostat
EcoBee 3

Here we go with another just perfect yet best smart thermostat satisfying to your comfort standards.

Ecobee3 Lite Smart Thermostat is a minimum expensive Wi-Fi thermostat that you can find on the market which supports five main smart home platforms. It is one of the most appealing based 7-day programmable best smart thermostats. It features a 3.5-inch digital display with a touch screen interface just like your smartphone. All you need to do is just tap on an option to change the temperature, set schedules, and view the current forecast.

The Ecobee3 Lite interface is spontaneous, convenient to circumnavigate, and very alert. The device does not offer a rechargeable battery. Therefore, a C wire to install the included power extender kit or digital display is required. Though the installation is easy and does not consume much time. Once your thermostat is installed and powered on, you can set the temperature and program temperature schedule changes.

The EcoBee app on your Android or iOS device allows remote access to heating or cooling. In this way, you can make adjustments and check the status of your thermostat whenever your phone is connected to Wi-Fi. Also, it effectively works with Alexa and Siri voice control. Besides this, the preprogrammed temperatures are also updated automatically. Overall, the device is responsive and simple to program.


1 Ecobee3 Lite Smart Thermostat is extremely responsive and simple to program.

2 It works with five major smart home platforms.

3 It can work with Alexa and Siri voice control.


1 It does not give you a remote sensor.

Emerson Sensi Touch

Emerson Sensi Touch is one of the best smart thermostats that are affordable WiFi smart thermostats. It features a color touchscreen display whereas everything else is tucked behind the plastic covering that can easily fold down. It makes the thermostat look pleasantly minimal. The thermostat can work with HVAC equipment.

The display gives you both the current and target temperature at the same time and even labels them room and set so you don’t get confused between the two. The device is compatible with Alexa, Google Assistant, Apple home kit, and Samsung smart things. It is easy to install and use and has a remarkable requires C- wire. Giving you the option of remote access from smartphone or tablet with Sensi mobile app for Android and iOS devices., With easy programming, you can conveniently adjust the temperature swing.

Finally, the  Emerson Sensi touch thermostat comes with an air filter monitor, adjustable second stage heat offset, and optional wall plate.


1 Emerson Sensi touch thermostat comes with a touchscreen color display.

2 It features a backlight, smart alerts, keypad lockout, and remote access.

3 It gives users various programmable options.

Schneider Electric Wiser

Schneider Electric Wiser
Schneider Electric Wiser

Are you thinking to buy a very efficient and quick control smart thermostat? Something that you can operate with your gadgets to Windows. Here’s what we have got for you then.

Schneider Electric Wiser Air is simple and easy to install the thermostat. It has a sleek and instinctual design with a touch screen to keep you updated. It gives you various fun features such as a comfort boost that speedily brings comfort as soon as you touch the button. Also, it helps you to save energy more efficiently. It effectively controls and manages your home energy from anywhere with your smartphone, tab, or laptop.

It learns how your system is running from a distance and glows a different color based on various modes. Moreover, it integrates with IFTTT thus letting you connect with hundreds of products and services and enhance your home connected experience. The device comes with light and humidity sensors that allow automated control of your home heating or cooling. Finally, it is compatible with Windows 10, iOS, and Android devices and is a complete home energy management solution.

Smart, efficient, and one of the best smart thermostats. Pretty right? Aren’t we?


1 Schneider Electric Wiser Air is easy to set up and use.

2 It works well to keep your home at the desired temperature.

3 It comes with an Eco IQ feature.


1 At times the displayed temperature is a few degrees high than the actual temperature.

This buyer guide is comprised of the best smart thermostats thus making it easier for you to choose the best one for your home and enjoy various programmable features. Detailed research has been conducted, and the information is made available to you. Get your best smart thermostats and feel free to enjoy the luxurious environment of your home. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Read about our Affiliates Disclosure Policy here. Amazon and the Amazon logo are trademarks of, Inc. or its affiliates.