14 Best Smart Thermostats for Alexa (Reviews)

14 Best Smart Thermostats for Alexa (Reviews)
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Dumb thermostats? So last century.

Smart thermostats have taken over, bringing AI-powered climate control to modern homes. These intelligent hubs learn your temperature preferences, adjust cooling and heating automatically, and can be controlled remotely via smartphone apps.

The best smart thermostat models use sensors and geofencing to detect when you're home, adjusting accordingly to maximize energy savings (up to 23% annually according to Energy Star). Voice control via Alexa, Google Assistant or Siri? Check. Integration with other smart home devices? You bet. Automatic software updates with the latest AI enhancements? That's just smart.

NEST, ECOBEE, HONEYWELL - the top brands are battling to outsmart each other on features like touchscreen displays, smart scheduling, usage reports and HVAC monitoring. But one thing's clear - upgrading to a smart thermostat is the brightest way to reduce energy bills while boosting home comfort IQ. Let's explore the coolest (and hottest) options.

Best Smart Thermostats for Alexa

  1. GOOGLE NEST Learning - Best Overall for Alexa
  2. ECOBEE Premium - Best value
  3. MYSA V2 - Best for Electric Baseboard and in-wall heaters
  4. HONEYWELL Home RTH9585WF - Best for Energy Rebates
  5. EMERSON Sensi ST55 - Best Energy Star Certified
  6. HONEYWELL T9 - Best for Smart Room Sensors
  7. Amazon Smart Thermostat — Best Compatibility
  8. 4 Other Recommended Smart Thermostats for Alexa

1. GOOGLE NEST Learning: Best Overall for Alexa

Google Nest Learning Thermostat 2 - best smart thermostat - grandgoldman.com


The 3rd Generation Google Nest Learning Thermostat provides a hassle-free approach to home climate control. Featuring Auto-Schedule, it eliminates the need for manual programming by learning your preferences. The Home/Away Assist function adjusts temperature when you're away, saving energy.

With remote control via the Nest app, you can manage your thermostat from anywhere. The Energy History feature provides insights into your usage patterns, promoting energy efficiency. Look for the Nest Leaf as a guide to energy-saving temperature settings. Ensure compatibility by using the online Nest Compatibility Checker on the support page.

Our review

Google Nest Learning Thermostat - best smart thermostat - grandgoldman.com

Quick and straightforward installation. Easy setup, controlled through the phone app. If you're looking to save money, the white thermostat performs just as well.

The best aspect is that we purchased temperature sensors, allowing us to heat our house from remote points. Our thermostat, located in a small hallway with two vents, used to make the hallway warmer than the rest of the house. With the new setup, the furnace runs longer with fewer starts.

There's room for improvement in upgrading the monthly reports, but this one have definitely convinced us.

2. ECOBEE Premium: Best value

ecobee New Smart Thermostat Premium with Smart Sensor and Air Quality Monitor - best smart thermostat - grandgoldman.com


The ecobee Smart Thermostat Premium is an ENERGY STAR certified programmable Wi-Fi thermostat designed to save up to 26% on annual heating and cooling costs. It features a SmartSensor that adjusts room temperatures for optimal comfort, combating hot or cold spots. The built-in air quality monitor offers alerts and tips for improvement, while a sleek display with advanced occupancy sensing enhances user experience. 

This comprehensive home monitoring hub includes smoke alarm detection, break-in alerts, and voice control with Siri or Alexa. With compatibility across various HVAC systems, easy installation is ensured, even in C-Wire-less homes.

Our review

This is a fantastic addition to my smart home. Setting up the hardware was a breeze. Although my old thermostat didn't have a C wire, I found an extra wire in the bundle. I connected it to the C wire slot on my furnace and linked it to the Ecobee, avoiding the need for the adapter.

ecobee New Smart Thermostat Premium with Smart Sensor and Air Quality Monitor - best smart thermostat - grandgoldman.com

The aesthetics are impressive—it's like a small piece of art on my wall. The large, readable numbers display the current temperature, and as you walk by, the screen changes to show the set temperature, just like in the product image.

Setting up the software was also straightforward, thanks to the provided guide. While the built-in schedule is a bit limited, I don't use it anyway. I paired it with HomeKit for voice commands like "Hey Siri, what's the temperature?" and "Turn up the heat." Additionally, I connected it to my SmartThings hub, which now has native support. This allows me to set rules like lowering the temperature when everyone leaves the house or raising it when someone arrives.

An added bonus: my state's energy trust offers a $50 rebate for the purchase of a smart thermostat. Don't forget to check for local/state incentives.

3. MYSA V2: Best for Electric Baseboard and in-wall heaters

Mysa Smart Thermostat for Electric Baseboard and in-Wall Heaters V2 - best smart thermostat - grandgoldman.com


The Mysa Smart Thermostat V2 offers advanced features for electric baseboard and in-wall heaters. Supporting 120-240V systems, it's 40% smaller with new additions like Adaptive Display and Brightness Technologies. Control remotely via the app, set schedules in under a minute, and enjoy seamless integration with Alexa, Google Assistant, and Apple HomeKit. 

Its quick 15-minute installation, compatibility with high-voltage systems, and energy-saving capabilities make Mysa a smart choice for efficient and convenient home heating. Stay cozy and connected with Mysa, adjusting your heating from anywhere through your Android or iOS device.

Our review

The in-app installation instructions set the gold standard for electrical smart devices I've worked with. Living in a 90s-built home, opening a switch box can be an adventure. I've returned numerous smart switches, and even with the ones I've kept, I struggled with the wiring.

This was brilliantly developed by the creators. The app guides you through installation, asking about your model, the number of wires in your box, and even the wire colors. It's a dream for someone with a relatively low level of understanding of electrical wiring.

Mysa Smart Thermostat for Electric Baseboard and in-Wall Heaters V2 - best smart thermostat - grandgoldman.com

The thermostat is stunning compared to the old tan rotary ones I replaced.

The app is also well-designed with numerous features. Setting up zones and schedules is intuitive. You have complete control over unit brightness, sleep mode, wake brightness, etc., often overlooked in smart devices that can leave houses resembling something out of Tron. The app tracks electricity usage and allows you to enter a kWh price to calculate your heater's cost up to the minute. The humidity sensors are handy in my basement during the summer to monitor my dehumidifier.

I'm so impressed with these. I rarely talk much after a purchase, but I can't say enough good things about these Mysa thermostats. They're so good that I'm definitely looking into other Mysa products. If you have baseboard heaters, don't think twice—get these.

4. HONEYWELL Home RTH9585WF: Best for Energy Rebates

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat - best smart thermostat - grandgoldman.com


The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat will bring you personalized comfort with its customizable design to complement your home decor. Energy-saving features include potential rebates and participation in utility demand response programs. The thermostat allows flexible scheduling and easy operation through its intuitive touchscreen. 

Compatible with various heating systems, it is Energy Star certified, providing monthly energy reports and personalized tips. Ensure compatibility and the need for a C-wire before purchase. Additionally, fan control options enhance its versatility, making it a comprehensive choice for efficient and comfortable home climate management.

Our review

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat - best smart thermostat - grandgoldman.com

Recently installed on my propane forced-air furnace, the instructions for this thermostat are clear and thorough. Wall installation requires a bit of finesse but isn't overly difficult. A notable advantage is that I could use the same mounting screws that held my 12-year-old Honeywell thermostat, thanks to Honeywell maintaining the same spacing. You'll need to locate and use the "C" wire on your heating unit; if unavailable, there's a workaround, though it sacrifices some fan functionality.

The Wi-Fi setup takes a while and involves creating an account, which is standard. There are numerous settings and preferences to configure. Once completed, the thermostat functions well both manually and through Wi-Fi. My only complaint is that the screen has faint diagonal lines, but considering it's a thermostat and not a 72" flatscreen, this is a minor issue.

Note: Most modern heating systems have a permissive switch in the door frame where the wiring is, and they won't work with the door off. Don't ask how I know or how long it took me to find it!

5. EMERSON Sensi ST55: Best Energy Star Certified

Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, DIY, Works With Alexa, Energy Star Certified, ST55 - best smart thermostat - grandgoldman.com


The Emerson Sensi Wi-Fi Smart Thermostat (ST55) is a user-friendly solution for a smart home. With privacy protection as a priority, Sensi ensures your personal information stays secure. This ENERGY STAR-certified thermostat offers approximately 23% savings on HVAC energy through features such as flexible scheduling and remote access. 

Its easy DIY installation, smart maintenance capabilities, and simple configuration make it a seamless addition to most homes. The thermostat's familiar design and compatibility with common HVAC systems make it a convenient and efficient choice for energy-conscious users.

Our review

Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, DIY, Works With Alexa, Energy Star Certified, ST55 - best smart thermostat - grandgoldman.com

I was looking for a smart thermostat without breaking the bank and without the need for any fancy features like self learning based on your habits for example. Got a good deal on the Sensi and decided to try it out. I downloaded the app before purchasing and was able to check my existing wiring to see if the Sensi was compatible for my system. 

The app is simple and goes through all the necessary steps for setting up. You will need the C wire for this thermostat. Easy to use, great features, and very responsive when using your phone.

6. HONEYWELL T9: Best for Smart Room Sensors

Honeywell Home T9 WiFi Smart Thermostat, Smart Room Sensor Ready, Touchscreen Display, Alexa and Google Assist White - best smart thermostat - grandgoldman.com


The Honeywell Home T9 WiFi Smart Thermostat offers ENERGY STAR certification, providing insights into monthly energy use and adapting to your lifestyle. Users can save more with energy rebates and participate in utility demand response programs. With auto home and away modes and multi-room focus using Smart Room Sensors, it ensures comfort and energy efficiency. 

The thermostat is compatible with various heating systems and features a straightforward setup with everything included. Before purchasing, users should check compatibility and the need for a C-wire power adapter. Overall, it's a smarter, simpler solution for efficient home climate control.

Our review

Honeywell Home T9 WiFi Smart Thermostat, Smart Room Sensor Ready, Touchscreen Display, Alexa and Google Assist White - best smart thermostat - grandgoldman.com

Nowadays, many products claim to offer "easy setup" or a "quick install," but often the instructions leave you confused after just a few steps.

The instructions for the Honeywell T9 Thermostat are unlike those of other products. After ordering and worrying about installation, I finally opened the box this morning, followed step 1, and it went flawlessly! 

The instructions even include helpful tips for those unfamiliar with electrical wiring. I highly recommend it for anyone considering a DIY installation. With a drill, screwdrivers, pencil, and level, it's a breeze. Kudos to the person who wrote the instructions – the thermostat works great.


7. Amazon Smart Thermostat – Best Compatibility

Amazon Smart Thermostat – Save money and energy - Best Smart Thermostats for Alexa (Reviews)


Upgrade your home's thermostat to the Amazon Smart Thermostat for a seamless transition from traditional controls to energy-efficient smart technology. 

Compatible with Alexa and Ring, this thermostat offers convenient on-the-go control via the Alexa app. Plus, with the potential for rebates from your energy provider and estimated yearly savings of $50, it's a smart investment in both your wallet and the environment. Installation is a breeze with guided instructions in the Alexa app, backed by reliable Honeywell Home Thermostat Technology.

Amazon Smart Thermostat – Save money and energy - Best Smart Thermostats for Alexa (Reviews)


  • Energy savings: Enjoy potential rebates and an estimated $50 yearly energy bill reduction.
  • Automatic comfort: Let Alexa manage your temperature preferences for optimal comfort.
  • Easy installation: Guided instructions make setup a snap, with customer service available for support.
  • Compatible with Alexa and Ring: Seamlessly integrates with your existing smart home ecosystem.
  • Reliable: Built with Honeywell Home Thermostat Technology for durability and performance.


  • No built-in speaker or microphone: Requires a separate Alexa-enabled device for voice control.
  • C-wire required: Ensure compatibility with your home's wiring before purchase, as a C-wire or power adapter kit is necessary.


Other Recommended Smart Thermostats for Alexa

  1. MEROSS Smart Temperature Controller  CHECK PRICE
  2. LEVOIT Smart Thermostat for Home  CHECK PRICE
  3. CREAWONLAS WiFi Thermostat for Home  CHECK PRICE
  4. SENSI Lite Smart Thermostat with Data Privacy  CHECK PRICE
  5. MEHDOC Smart Thermostat Compatible with Alexa CHECK PRICE
  6. AVATTO Smart WiFi Programmable Thermostat CHECK PRICE
  7. CIELO Smart Thermostat Eco | Supports Conventional Systems up to (2H/2C) & Heat Pumps (4H/2C)  CHECK PRICE


How to Choose a Smart Thermostat

Navigating the diverse landscape of smart thermostats can be overwhelming. To make an informed decision, consider these crucial factors:


Ensure the thermostat aligns with your HVAC system type. Check compatibility lists or consult a professional for assistance.


Different models offer a range of features, from geofencing for automatic temperature adjustments when you are home or away to remote access for control from anywhere. Prioritize features that align with your needs.

Ease of Use

Choose a thermostat with an intuitive interface and user-friendly app. Consider aesthetics and display style as well.


Check for compatibility with smart home platforms like Amazon Alexa, Google Assistant, or Apple HomeKit for seamless integration.

Energy Efficiency

Look for Energy Star certified models that demonstrate commitment to conserving energy.


Smart thermostats range in price, so set a budget and evaluate features accordingly.


Best smart thermostat - grandgoldman.com


When to Consider a Smart Thermostat

Smart thermostats are an excellent choice for homeowners seeking enhanced comfort, convenience, and energy efficiency:

Control from Anywhere

Optimize your HVAC system remotely from your smartphone or tablet, regardless of your location.

Schedule and Automation

Set schedules and automate temperature adjustments based on your daily routines and preferences.


Avoid heating or cooling unoccupied spaces with geofencing features that automatically adjust temperatures when you leave or arrive home.

Energy Savings

Optimize energy consumption by using smart algorithms and learning your usage patterns.

Smart Home Integration

Integrate seamlessly with existing smart home devices for a unified control experience.

If you're looking to elevate your home comfort, simplify temperature control, and reduce energy costs, a smart thermostat is a wise investment. With an abundance of features and compatibility with various HVAC systems, you can find the perfect match for your home and lifestyle.



Best Smart Thermostats FAQs

Is it worth getting a smart thermostat?

Smart thermostats offer a host of benefits that can make them a worthwhile investment for many homeowners. These benefits include:

  • Enhanced comfort: Smart thermostats allow you to set schedules and automate temperature adjustments based on your daily routines and preferences, ensuring you're comfortable at home without excessive energy consumption.
  • Remote control: Manage your HVAC system from anywhere with your smartphone or tablet, adjusting temperatures or checking energy usage from the comfort of your couch or while traveling.
  • Energy efficiency: Smart thermostats use advanced algorithms to learn your usage patterns and optimize energy consumption, potentially leading to lower energy bills.
  • Smart home integration: Integrate your smart thermostat with other smart home devices for a seamless control experience and enhanced automation.

While the initial cost of a smart thermostat may be higher than a traditional thermostat, the long-term savings in energy costs can offset the investment. If you're looking for a way to improve your home comfort, reduce energy consumption, and simplify temperature control, a smart thermostat may be a worthwhile investment.

Is there a downside to smart thermostats?

While smart thermostats offer many benefits, there are a few potential downsides to consider:

  • Higher price: Smart thermostats typically cost more than traditional thermostats, so the initial investment may be a deterrent.
  • Technology dependence: Smart thermostats rely on Wi-Fi connectivity and software updates, so they may be more susceptible to malfunctions or security concerns.
  • Limited compatibility: Some smart thermostats may not be compatible with all HVAC systems, so it's important to check compatibility before purchasing.
  • Ease of installation: Some smart thermostats may require professional installation, especially if your HVAC system is not compatible or lacks a common wire (C-wire).

Overall, the downsides of smart thermostats are outweighed by the potential benefits for many homeowners. If you're comfortable with technology and are looking for ways to improve your home comfort and reduce energy consumption, a smart thermostat can be a valuable addition to your home.

What exactly does a smart thermostat do?

A smart thermostat is a type of programmable thermostat that connects to your Wi-Fi network and allows you to control your HVAC system remotely from your smartphone or tablet. It can also learn your usage patterns and adjust temperatures accordingly to optimize energy consumption.

Can a smart thermostat replace any thermostat?

Most smart thermostats can replace traditional thermostats, but it's important to check compatibility with your specific HVAC system. Some smart thermostats may require a C-wire, which is a common wire that provides constant power to the thermostat. If your HVAC system does not have a C-wire, you may need to use a battery-powered smart thermostat or have an electrician install a C-wire.



Can I install a smart thermostat myself?

The ease of installation for a smart thermostat depends on your HVAC system and the specific model you choose. Some smart thermostats are relatively easy to install, while others may require professional installation. If you're not comfortable with DIY projects, it's best to hire a qualified HVAC technician to install your smart thermostat.

Why are smart thermostats so expensive?

Smart thermostats typically cost more than traditional thermostats due to the advanced technology they incorporate. Smart thermostats use Wi-Fi connectivity, sensors, and advanced algorithms to optimize energy consumption, learn user preferences, and provide remote control capabilities. These features come at a cost, contributing to the higher price of smart thermostats.

Do smart thermostats use more electricity?

Smart thermostats themselves use a small amount of electricity, and some models even have an energy-saving mode that reduces their power consumption. However, smart thermostats can help you save money on energy bills by optimizing your HVAC system and preventing unnecessary heating or cooling.

Do smart thermostats lower electric bill?

Smart thermostats have the potential to lower your electric bill by learning your usage patterns and adjusting temperatures accordingly. They can also prevent unnecessary heating or cooling by detecting when you're home or away. According to a study by the U.S. Department of Energy, smart thermostats can save homeowners an average of 10% on their energy bills.

What are the concerns about smart thermostats?

Some homeowners may have concerns about the security and privacy of smart thermostats, as they collect and transmit data about your home's temperature and usage patterns. However, many smart thermostats use encryption and other security measures to protect your data. It's important to choose a reputable brand and read reviews before making your decision.

Best Smart Thermostats for Alexa (Reviews)



Michael Goldman

An engineer, author and high-tech enthusiast whose passion has been evolving for 12 years. After contributing to numerous online publications, Michael shares his experiences and discoveries on his journal. He focuses on Smart Homes, Connected Devices, and how they will improve our lives and society in the future.