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Best Smart Thermostats Compatible with Alexa

Most of the time, you’re cozy in your bed and don’t want to leave the comfort. Sometimes, to achieve that coziness and comfort, you need to maintain the temperature of your room. It’s not convenient for you to leave your bed and manually set the thermostat knob. Don’t worry, we feel you! Here is a smart solution for you in the shape of these best smart thermostats compatible with Alexa.

When it comes to the smart home, thermostats should be your priority to transform. These smart thermostats are not just the temperature control system but equipped with multiple other complementary features. Some of these features include a touchscreen, wifi support, multiple room control, and more. So what are you waiting for? Keep your hands on these best smart thermostats, and you’re good to go with an elegant home experience.

Why Should One Buy The Best Smart Thermostats Compatible With Alexa?

There are plenty of reasons why you should shift to a smart thermostat, and we’ll state them all for you! First thing first, let’s talk about its prime purpose. Whether you’re feeling cold or hot, this smart thermostat will help you attain the coziness you want. Not just this, but you can achieve the desire without moving your hands. What can be more convenient than that?

Yes! Most of the best smart thermostats are compatible with Alexa and Google Home. No need to physically rotate the adjusting knob now! Next up, we have the cost reduction benefit. Many smart thermostats are believed to have an energy-efficient mechanism by which they can adjust the temperature automatically. You can also set schedules and routines. That means your home’s cooling and heating systems are not always in the full-mode and work only when needed. Isn’t it’ll be a money saver for you as well?

What To Look For In The Best Smart Thermostats Compatible With Alexa?

Before we get onto our product list of the best smart thermostats for 2021, here are some factors that you’ll need to consider while making the best purchase in this regard.

Compatibility: Before anything else, make sure to double-check the compatibility factor. Check whether the smart thermostats are compatible with your home’s heating, cooling, or ventilation system or not. Otherwise, it’ll be a waste of investment!

Integrations: Next, you should look at whether it is smart or not? Make sure to buy one that is compatible with Alexa or Google Home to control it via voice commands.

App Usability: Not every time you’ll be at home! Then what if you forgot to maintain the thermostat before going out! Thus, check if the smart thermostats are usable with the application or not! 

All in all, whether you want to control your home’s heating or cooling system via phone/voice or you’re looking for a cut on your energy costs, these best smart thermostats compatible with Alexa will be the choice!

Let’s delve into the details of the best smart thermostats for money:

Best smart thermostats compatible with Alexa for 2021:

1. Google Nest Learning Thermostat:


Adjustable Device:

When it comes to smart home gadgets, nothing can beat the versatility and top-notch quality from Google. This time, Google Nest Learning Thermostat is the explicit depiction of this! It holds the software which automatically learns your schedule and temperature.  Thus, it can cut down or save energy and cost itself.

Home/Away Assist:

Another striking feature for this Google Nest is its Home/Away assist option. Also, using this feature, you can set the device to Eco-mode! This mode enables you to feel cozy by consuming less power.

Energy History Data:

Are you looking for complete details of energy? Don’t worry; Google Nest has it all! In the application under the history tab, you’ll get to know how much energy is used in a month and why. You can also check from the Nest’s screen by using the Quick History button.

Smart Monitoring:

These smart thermostats from Google have another exciting feature on-board! The smart thermostats with HVAC monitoring will tell your home’s heating and cooling system if anything goes wrong. Also, it notifies you with reminders if maintenance is needed.

Nest Temperature Sensor:

Google Nest Learning Thermostat can be paired with the temperature sensor to know your room’s precise temperature. Isn’t it a comfy device for your living room?


  • Stainless steel finish
  • Easy to install
  • HVAC monitoring
  • Works with temperature sensor


  • Temperature sensors need to be bought separately.

2. Emerson Sensi ST55 wifi Smart Thermostat:


Save Energy:

Emerson Sensi is one of the top-notch quality smart thermostats. But why is it so? Plenty of intelligent attributes on-board makes it the editor’s choice! The manufacturer claims that this Sensi Smart Gadget can save up to 23% on your current energy bills, and the Energy Start Certification vouches for this fact.

Many other features like geofencing, 7-day flexible scheduling, and remote access will cut down costs. Aren’t you still convinced with the device? Let’s look at other features:

Easy to Install:

If you’re looking to install this thermostat yourself? You’re good to go! Emerson Sensi will take only 30 minutes to install correctly. The step by step instructional manual, on-board will make things easy for you. Also, the thermostats’ dimension will allow you to fit this anywhere on the wall.

Control from anywhere:

Are you not at home? Worry not! Using smart home integration, you can control this thermostat via voice commands. It works perfectly with Amazon Alexa, Google Assistant, Apple HomeKit, and Samsung SmartThings. Moreover, smartphone application compatibility lets you control it from anywhere.

Smart Alerts:

Sensi has got you notified with everything! The device will detect the temperature and humidity levels in your room and remind you of the higher and lower extremes. What else one wants for a healthy surrounding?  


  • 7-day schedule 
  • Works with Android as well as iOS 
  • Complete energy history 
  • Install in 30 minutes 


  • C-wire required 

3. Honeywell Home wifi Thermostat:


Personalize as you want:

Do you wonder what device goes well with the walls? No problem! This smart thermostat comes with a widescreen, which has a color that you like! You can personalize the screen to fit your home’s décor or match the wall’s paint.

Set the Schedule:

Apart from the personalization, the Honeywell Smart Thermostat is famous for its programmable options. The flexible operations and smart schedule make it the ideal choice for most of the users. What if you forget to set the temperature before leaving home? No worries! Honeywell thermostats will take care of it.

Intuitive Operations:

No one would want to consume its energy on complicated setup and operations. If the same is the case with you, that’s where these best smart thermostats compatible with Alexa jumps into business! It has an easy-to-touch screen with a bright display and a simple UI for a user-friendly experience.

Smart Home Integration:

Are you not in a mood to leave the cozy bed? Here you go! The wifi smart home integration makes this gadget compatible with most of the voice assistants. You can ask Google Assistant, Amazon Alexa, Microsoft Cortana, and more to adjust the temperature without any physical touch.

Smart Reminders:

You don’t need to keep track of maintenance records, as this smart thermostat does it for you! You’ll get the air filter change, temperature, and connection alerts as well.


  • Monthly usage reports
  • Smart home integration
  • Easy to use the app
  • Personalized screen


  • Poor touch sensitivity

4. Ecobee Smart Thermostat:


Perfect Smart Gadget:

Ecobee is the award-winning smart home gadget that makes it easier for you to keep your hands on this trustworthy device! It has a crisp glass finish with a vivid display and a powerful quad-core processor to perform its operations without any interference. The dual-band wifi, along with the far-field voice, has pushed the limits of usage for this thermostat- bring in more versatility!

Sensors on-board:

Are you worried about temperature sensitivity? Leave it on the Ecobee! Ecobee is well-equipped with multiple smart sensors that can automatically adjust the temperature based on occupancy. Thus, every room’s temperature will not be the same, but the number of persons there! You can also use it for the multi-room setup.

Easy Controls:

Dual control options have made this Ecobee lovable to all. Are you tired of complex setups? Not anymore! Ecobee gadget makes sure that you get all the comfort and coziness. Thus, the smart thermostats work well with the Amazon Alexa and the intuitive mobile application. Also, you can control the device via Apple Watch.

Easy Installation:

The installation will take only 45 minutes or might be less for some! That’s right! No need to look for an expert to install this smart gadget as a step by step instruction guide will help you get through the process.


  • Alexa built-in
  • Built-in occupancy sensor
  • Multi-speed fan control
  • 2.4/5 GHz wifi support


  • No variable fan speed 

5. Emerson Sensi wifi Thermostat ST75:


Flexible Scheduling:

Do you often forget to adjust the normal range while going out? No worry; set a schedule now! Emerson has brought this best smart thermostat with Alexa loaded with tons of brilliant features. One such attribute is its flexible scheduling, which makes the life of a busy person easier. Gone are the days where you need to remember the time to turn off the AC or heater! Utilizing its schedule or geofencing option, this Sensi ST75 will adjust it automatically!

Step by Step Guide:

Do you find any trouble installing this wifi thermostat on the wall? No worries now! Install in less than 30 minutes using the built-in level and illuminated easy-click terminals. A step by step guide on-board will work as a plus for you!

A step towards Smart Home:

Emerson Smart Sensi will help you transform a straightforward home into the intelligent one! It can listen to your needs and adjust the temperature as you need. Its compatibility with Amazon Alexa, Google Assistant, Apple Homekit, and Samsung SmartThings has made the process more manageable. What else you’re waiting for now!

Smart Alerts:

The device will notify you of everything you need to know! You can remotely control your home’s comfort using the application, and the app will give you alerts, monitor your day, and display the overall history.


  • 23% saving on energy bills
  • Easy to install
  • Prevent building up of mold
  • Compatible with Sensi app


  • C-wire required

6. Honeywell Wireless wifi thermostat:


Remotely manage:

Honeywell Wireless wifi thermostat works perfectly with the smart home voice assistants that let you control the device wirelessly. The Total Connect App helps you monitor and manage the home’s comfort and energy usage both simultaneously. Thus, bringing you ease, this Honeywell’s nifty gadget is all you need to add up to your coziness in the home.

Easy Programming:

A 7-day programmable schedule will leave everyone stunned in the smart gadget industry! You can now set the programs for the coming week, including the turn ON/OFF time so that you don’t need to keep an eye on the thermostat every time. This programming or scheduling will bring a massive cut in your energy bills, saving you some cost in return.

Custom Display:

Do you often get bored of displays? Here you go! A custom display screen will depict the look that suits your living room! That’s right; now you can change the current information displayed on the screen as per your comfort.


  • 7-day programming schedule
  • Total Connect Comfort app
  • Professional installation
  • 5-year limited warranty


  • No adjustment for CPH

7. Honeywell Home T9 wifi Thermostat:


Sleep Smarter with Sensors:

Are you looking for sound sleep at night? Leave it on the Honeywell T9! It has brought smart Home Sensors on-board that help you safely sleep and have a perfectly relaxing day. But how? The Smart Room Sensors work like the geo-fencing and look for the people in different rooms. Once scanned, it can automatically adjust the temperature as per need. Thus, there is no need to have the same temperature all over the home.

Wide Range:      

Honeywell Home T9 offers a wide range of sensors that helps in maintaining smart home integrations. These battery-powered intelligent sensors can detect any person’s presence within 200 ft. and efficiently control/adjust the temperature as per need. The range might vary depending on the construction of your home.

Multi-Room Adjustments:

What if you need a thermostat for the whole house? Worry not! You don’t need to own plenty of wifi thermostats each for separate rooms. The multi-room focus attribute for this Honeywell T9 can handle the temperature of various rooms.

Save Energy:

Auto Home/Away schedule has brought immense feasibility at your fingertips. The thermostats will automatically adjust the temperature using the Smart Sensor.

Another feature on-board is the Smartphone Application Compatibility. You can wirelessly control this wifi thermostat from anywhere, anytime. All these wireless modes help you save some energy costs.

Smart Responses:

You can intelligently learn about your room’s temperature and the heating/cooling patterns over time.


  • Auto Home/Away
  • 200 ft. smart sensor
  • Easy to install
  • Smart alerts regularly


  • Complex setup

8. Cielo Breez Plus Smart Controller:


Control the Window/Split Unit:

Are you looking for a Smart AC Controller with some modern features in-board? If so, nothing can be a better choice than this Cielo Breez Plus! The wifi gadget can control the mini-split and window AC unit that is compatible with IR-remote technology. You can connect this controller with wifi and control the air conditioners with a smartphone and all other voice assistants.

Control with Voice:

You can control the AC devices with your voice only! The gadget is fully compatible with iOS, Android, Alexa, and Google Home to listen to your needs. You can set the schedule and adjust the temperature without leaving the coziness of your bed. What else you look for in thermostats!

25% Savings:

Cielo Breez Plus helps you cut down the expenses of your energy by 25%. That’s where you need this nifty gadget inside your living room. It not only boosts comfort and convenience but sets a schedule for you as per your need. Also, the location-based configuration is one way to control this smart controller to save some energy costs.

 Auto Remote Control detection:

Cielo Breez Plus brings in the auto remote control detection, which helps you set the triggers for temperature or humidity and offers the choice to run the device on 5V/12V.


  • Wifi connectivity
  • 25% energy saving
  • Dual mount type
  • Detailed history


  • Temperature and humidity don’t appear simultaneously  

9. Tado Wired Smart Thermostat:


Multi-Room Control:

Tado has brought this amazingly designed wired thermostat, which helps you adjust the various rooms’ temperature levels. No need to spend extra pennies on buying the device for multiple rooms! Not just this, but you can manage individual zones at each place. You can set the thermostat to cool/heat the surroundings as per everyone’s taste.

Tado App is the Key:

Do you wonder how you can configure the multi-room setup and set the thermostat to control the temperature in a range? The Tado Application brings this ease to your life. You can enable the “multi-room setup” from the application and set the limits for each room.

The Startup Kit:

Tado device comes with a complete startup kit on-board that’ll help you complete the setup in one go! This started kit (V2+V3+V4) along with the internet bridge is all you need to fit and run the thermostat the first time.

All Accessories Included:

Tado Starter Kit comes with all the accessories, including 3 AAA batteries, double-sided adhesive tape, and mounting materials.


  • Weighs only 130 grams
  • Multi-room setup
  • Compatible with 95% of system
  • Comes with all accessories


  • Comparatively expensive

10. Bticino Smarther2 Smart wifi Thermostat:


Auto Adapt Option:

The device will learn the right temperature at the right time! Bticino Smarther2 has a learning characteristic based on comparison with the outside temperature and the anticipation of inside temperature as per need.

Consumption Control:

Thanks to Google Home or Amazon Alexa, you can keep control over the operation using your voice only. But the consumption checker option is right in the application, which not only measures but compares your place’s temperature.

Boost Option:

A boost function is available for this Biticino thermostat, ensuring you can activate the heating and cooling process every 30, 60, or 90 minutes.

Central Heating System:

The thermostat operation has no limits! This intelligent gadget is compatible with the home’s centralized system by using the valves.


  • Integrated wifi
  • BOOST function
  • Geo-location enabled
  • Manual control as well


  • Valves are must

Comparison Chart:

ProductsBrandDimensionsPower SourceCompatibility
1.Google Nest Learning ThermostatGoogle3.3 x 3.3 x 1.21 inchesBattery poweredGoogle Assistant and Alexa
2.Emerson Sensi Wifi Smart ThermostatEmerson3.75 x 5.88 x 1 inchesCorded ElectricAmazon Alexa, Google Assistant, Apple HomeKit,  Samsung SmartThings
3.Honeywell Home Wifi ThermostatHoneywell Home3.5 x 4.5 x 0.88 inches– Amazon Alexa, Google Assistant, Microsoft Cortana
4.Ecobee Smart ThermostatEcobee4.29 x 4.29 x 1 inchesLithium Metal batteriesGoogle Assistant, Apple Home Kit, Alexa, Samsung SmartThings, and IFTTT.
5.Emerson Sensi Wifi Thermostat ST75Emerson3.40 x 5.63 x 1.17 inchesCorded ElectricAmazon Alexa, Google Assistant, Apple HomeKit, and Samsung SmartThings
6.Honeywell Wireless wifi thermostatHoneywell Home4.5 x 3.5 x 0.88 inchesCorded ElectricAmazon Alexa, SmartThings, Google Home, IFTTT
7.Honeywell Home T9 Wifi ThermostatHoneywell Home3.7 x 4.92 x 0.94 inchesCorded Electric, Battery PoweredAlexa and Google Assist 
8.Cielo Breez Plus Smart ControllerCielo Breez4.33 x 4.33 x 1.02 inchesAmazon Alexa or the Google Home
9.Tado Wired Smart ThermostatTado19 x 104 x 104 mmCorded ElectricAmazon Alexa or the Google Home
10.Bticino Smarther2 Smart Wifi ThermostatBticino12.6 x 8.7 x 4.4 cm Alexa voice assistant, Google Home or Apple HomeKit

Frequently Asked Questions (FAQs):

Q. What makes the thermostats smart?

A. If you’re looking to shift to a smart home, the first step that’ll save your considerable chunk of money is to own the intelligent thermostats compatible with voice assistants, i.e., Amazon Alexa, Google Home, Smart Things, Apple Homekit, and more.

Q. How to buy the best smart thermostats?

A. There are plenty of factors that play a significant role in our purchase. While selecting the best smart thermostats, make sure to check if:

  • The thermostats are compatible with voice assistants.
  • All the thermostats work well with a multi-room setup.
  • This device has geo-fencing enabled.
  • Other features like remote access, sensors, cost, etc.

Q. Are smart thermostats worth it?

A. There are many ways by which the smart thermostat can help you in daily life. Smart features like geofencing and scheduling will cut down the energy cost and overall electricity bills.


Never worry about the inside temperature and adjusting it physically! The smart thermostats are here, which you can control via voice commands and smartphone applications. Set schedules and enable the geo-fencing to set the temperature range automatically to save some energy costs. Aren’t’ these nifty gadgets are a lifesaver for you?

You can also check out this article on Best Smart Blinds And Curtains With Alexa.

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