Best thermostats that support Alexa 2023

Amazon Smart Thermostat Review Temp App
(Image credit: Samuel Contreras / Android Central)

There are several reasons why you might want to automate your home heating and air conditioning systems with one of the best smart thermostats for Alexa. Connected smart thermostats are an excellent investment whether for convenience, energy efficiency, or that "cool" factor. If you are in the Amazon ecosystem, there are a growing number of great options. The ecobee SmartThermostat with Voice Control is our top choice because it has Alexa built-in, includes a room sensor, and is easy to use.

Ecobee official lifestyle 1

(Image credit: Source: Ecobee)

ecobee SmartThermostat with Voice Control

Top-of-the-line thermostat

Reasons to buy

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Faster processor
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Far-field voice recognition
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Alexa built-in
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Room sensor included

Reasons to avoid

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Pricey
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Complicated interface

Believe it or not, it's only been a couple of years since ecobee launched the ecobee4 with Alexa built-in. Before that, we had to talk to Alexa from another device, like cave people! But in all seriousness, the concept was a hit. And now, ecobee has followed up on the success of the ecobee4 with its newer SmartThermostat with Voice Control, which is comparable to the popular Google-friendly Nest Thermostat.

So what's new or better, you may ask? It's got a more modern, cleaner design with a more vivid touch display. It has a quad-core processor (yeah, in a thermostat!) and far-field voice recognition, so you don't have to shout to lower the AC. And with that built-in Alexa goodness, you can ask the ecobee SmartThermostat for weather or news updates or even play your music with Spotify connect. Are we living in the Jetsons' age or what?

Amazon Smart Thermostat Review

(Image credit: Samuel Contreras / Android Central)
Amazon's own low-cost thermostat

Reasons to buy

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One of the cheapest smart thermostats
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Easy to set up with Alexa
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No hub required
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Set up with the Alexa app

Reasons to avoid

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Touch buttons are less intuitive than some
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Won't work in multi-thermostat homes

The Amazon Smart Thermostat is one of the cheapest smart thermostats you can buy making it an easy top choice for many. Despite its low cost, this smart thermostat has a bright and clear display, touch controls, and an easy setup process. As we saw in our Amazon Smart Thermostat review, the guided installation process was easy for anyone handy with a screwdriver, and setting up with the Alexa app was a breeze.

The app will work to come up with a schedule for your home to help you save on your energy bill while helping you maintain a comfortable temperature. Like most smart thermostats, you'll need a c-wire for power but you can also grab a separate c-wire power supply if your home doesn't already have one. If you have all the wires you need, installation is simply matching the colors to the included wall plate.

Not everyone will love the Alexa app but it's a strong platform with a ton of devices supported and clear controls. If you want to upgrade to a smart thermostat on a budget with Alexa, the Amazon Smart Thermostat should be one of your first considerations.

Ecobee3 Lite

(Image credit: Source: Ecobee)

ecobee3 Lite Smart Thermostat

Alexa for less

Reasons to buy

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Works with any ecobee sensors
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Touchscreen
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Pairs easily and quickly with your existing Alexa devices
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Wires directly into your home
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Great value

Reasons to avoid

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Getting long in the tooth
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Even on sale, there are cheaper alternatives
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No smart sensors included

The ecobee3 Lite Smart Thermostat may be a few years old at this point, but it's still a great value. While it doesn't have fancy features like the Smart Thermostat with Voice Control, you can easily use your existing Alexa devices to monitor and manage this smart thermostat.

The ecobee3 doesn't include any smart sensors in its base configuration. Still, there are bundles available with them, and it works with any of the individual ecobee sensors you may have or purchase. Of course, you can also just march right up to it and tap away on its touchscreen to change the settings whenever you're up for it.

Emerson Sensi Touch Wi Fi Smart Thermostat

(Image credit: Source: Emerson)

Emerson Sensi Touch Wi-Fi Smart Thermostat

Color-coded comfort

Reasons to buy

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Huge, colorful touch display
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Screen color changes to indicate its status
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Can track your home's humidity
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Smart alerts and automatic upgrades

Reasons to avoid

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Alexa controls are limited
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Rather large display may not suit all decor

Emerson is another one of those names like Honeywell, well-established in the HVAC world, so it should come as no surprise that it is also in the smart thermostat game. The Sensi Touch Wi-Fi Smart Thermostat is a great option for any home, thanks to its large, bright touchscreen and compatibility with Amazon Alexa, Google Assistant, Samsung SmartThings, and Apple HomeKit.

This device will monitor your home's energy usage and provide historical data to help you make better heating and cooling choices. It can also send you smart alerts to detect extreme temperature swings or unusually high humidity levels. You also get automatic upgrades, so you don't have to worry whether your unit has the latest features to keep your system running smoothly.

We really like that the Sensi's color screen will change to reflect its status (heating or cooling), but the display unit's large size might not fit in with everyone's home decor. And while we certainly appreciate that it works with Alexa, some reviewers have commented that the Alexa integration is a bit limited. For example, you can ask the assistant to change the temperature but not set a different mode or schedule.

Honeywell RTH9585 official lifestyle

(Image credit: Source: Honeywell Store)

Honeywell RTH9585WF1004

Modern conveniences from a traditional player

Reasons to buy

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Affordable
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Huge display
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Intelligent alerts
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Works with most voice assistants

Reasons to avoid

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There are cheaper options by Honeywell
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Doesn't directly support geofencing

ecobee and Nest may get all of the headlines, but they're not the only game in town when it comes to smart thermostats. Honeywell has been building great thermostats for decades, so it stands to reason that it would have several strong entries when it comes to smart devices. The RTH9585WF1004 (wow, that's a mouthful!) is an excellent alternative to ecobee and Nest and works with most major voice assistant platforms, including Alexa.

The design of the RTH9585WF1004 is more reminiscent of a traditional thermostat panel, albeit with a modern flair. It has a monochromatic touchscreen display, and you can change the background color to suit your tastes. At 4.5 inches, you get more display area than other similar devices. This allows you to see more data at once, such as a five-day forecast and humidity levels indoors and outdoors. It will send you intelligent alerts on screen and in-app to know when your system needs service. It also learns your heating and cooling preferences with its Smart Response Technology to optimize temperature controls at the right time.

nest cam outdoor

(Image credit: Daniel Bader / Android Central)
Nest lite

Reasons to buy

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Affordable
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Simple, pleasing aesthetic
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Easy tap and swipe UI

Reasons to avoid

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Sensors not included
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Have to use Google Home app instead of Nest app
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Requires a C-wire to work properly

Even though the Nest brand is owned and controlled by Google, their smart thermostats can still work with Alexa and the Echo. The Nest Thermostat (2020) is the most affordable Google Nest thermostat and is arguably the easiest to use.

Smart voice control is not included in the device itself, so you'll need an Echo speaker to control the thermostat remotely. This device doesn't include all of the bells and whistles of more expensive Nest thermostats, but it does a great job of controlling the temperature of your home. So what else do you really need?

The Google Nest Alexa Skill is still available in the Alexa Skills store, but you can also try one of the many IFTTT applet recipes to connect your devices. Just look for the Alexa logo in the bottom right of each card or the Alexa wording.

While the Nest Thermostat (2020) is fairly easy to install, you really need to have a common wire to make sure it's getting the correct voltage to work as intended. It is also worth pointing out that you have to use the Google Home app to control this thermostat, and while we usually like the Google Home app, it's a less-than-optimal experience for controlling your Nest Thermostat. All the more reason to just ask Alexa!

Honeywell T5 Plus

(Image credit: Source: Honeywell)

Honeywell T5 Plus Smart Thermostat

Gets the job done

Reasons to buy

+
Allows for geofencing
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Compatible with Alexa, Google Assistant, and Siri
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Smart alerts

Reasons to avoid

-
Alexa not built-in
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Basic touchscreen

The Honeywell T5 Plus doesn't have the screen real estate or display functionality of its bigger brother on this list, but this newer, more compact model does have a few tricks up its sleeve that the RTH958WF1004 does not. For starters, it includes the ability to do geofencing out of the box. This means you can set programmable routines to control the temperature based on where you are. So, for example, you can set the air to lower once you leave work or turn on the heat as soon as you are getting close to your neighborhood.

There are several features that this device carries over from the RTH958WF1004. It has smart alerts for maintenance, and it adapts to learn how long it takes to achieve the right temperature to adjust its schedule to suit your preferences automatically. It is also compatible with various utility rebate programs.

Bottom line

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The ecobee SmartThermostat with Voice Control is the latest and greatest, top-of-the-line, the best option if you want a thermostat that works with Alexa. There's a room sensor included to get a better feel for your home's temperature, and you can give voice commands directly to the thermostat since Alexa is built-in. It's a bit expensive, but it's an excellent investment to help you save money on your home.

There is an ever-growing number of smart thermostats that work with voice assistants like Alexa, and the Amazon ecosystem, in particular, is perhaps the largest and most robust. When weighing your options, we recommend looking for the Alexa devices that not only work with Amazon's assistant, but that can work across multiple platforms, as you never know if/when you might change assistants or sell your home to someone comfortable with a different ecosystem. Thankfully, the ones on this list have you covered.

Jeramy Johnson
Editor-in-chief

Jeramy is the Editor-in-Chief of Android Central. He is proud to help *Keep Austin Weird* and loves hiking in the hill country of central Texas with a breakfast taco in each hand. You can follow him on Twitter at @jeramyutgw.

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