Smart thermostats are equipped with technology that allows them to connect to other devices to add more convenience to the user. One of the many devices that they connect to is smart home systems. The most popular smart assistant that they connect to is Amazon’s Alexa. Users can give voice commands to the voice assistant to adjust the temperature of the thermostat.
This article contains some of the best Alexa thermostats out there. The Ecobee Smart Thermostat is our best overall option for these smart thermostats. It is one of the few smart thermostats out there, which comes with a built-in Alexa. It is also equipped with the Ecobee smart sensors that help make the rooms more comfortable.
Best Smart Thermostats
1. Ecobee Smart Thermostat – Best overall
- Built-in Alexa
- Compatible with other smart home systems like Google Assistant, Samsung SmartThings, Apple Home Kit, and IFTTT.
- Smart sensors for occupancy and temperature
- Dual-band wifi
- 4.2 x 2 x 1.0 inches display
- Comes with speaker and microphone
The Ecobee smart thermostat is our favorite Alexa smart thermostat out there because it has built-in Alexa. This means it is great for those who do not have a separate Alexa device. It is also thus, equipped with speakers, which allows you to play music around the house on the thermostat as well. Ecobee smart thermostat has a quite large glass display that has an LED light strip at the top that glows blue when given a voice command. It comes with one SmartSensor (additional can be bought) that helps keep the thermostat perfect for the room that it is in. Lastly, the thermostat can be controlled from your smartphones by downloading the Ecobee App on both iOS and Android.
2. Nest Learning Thermostat (3rd Generation) – Best smart thermostat
- Programmable and energy saving
- Features many modes including Eco and Home/Away
- Compatible with Nest’s temperature sensor
- Equipped with a learning algorithm
- Supports Alexa, IFTTT, and Google Home
- Has geofencing technology and a furnace monitor
- 2 inches thick, 3.3 inches in diameter
The Nest Learning Thermostat is known for its learning capabilities that automatically allow the thermostat to make changes without any interference by the user. Its sleek design and fancy display screen make it very aesthetically appealing for any kind of décor. It offers Bluetooth support as well as geofencing technology so the thermostat knows when you are home or away. It is easy to program because it learns your patterns for the first few days and then uses that data for upcoming days.
The thermostat also has 10 temperature sensors that monitor the humidity, light, and activity. It also has the Farsight feature which is the display waking up as someone enters the room. It supports 3-stage heating, 2-stage cooling, 3-speed fans, and a dehumidifier and humidifier that can be bought separately. Most importantly it supports a range of smart home systems like Amazon Alexa, Google Home, and IFTTT. Essentially it is the perfect thermostat for someone who wants to make zero effort to adjust the thermostat.
3. Nest Thermostat – Best Affordable smart thermostat
- Energy-star certified
- Compatible with Amazon Alexa and Google Home
- Programmable from the phone app as well
- Alerts and reminders for when anomalies occur with the HVAC system
- 31 x 3.31 x 1.07 inches display
- Easy to install and does not require a c-wire
This thermostat by Nest is less smart than the Advanced Learning one, but it offers great features such as the energy-saving mode. It is also one of the most affordable value-offering thermostats out there. The display is attractive and comes with a mirrored screen and you have the option to choose from a few colors. The thermostat does not have a touchscreen but it has a touch bar that allows you to lower or raise the temperature. It is compatible with almost 85% of the systems and it works with Amazon Alexa as well as Google Home Assistant.
You can also easily set schedules for the upcoming days and the installation is a breeze. It saves about 10-12% on energy costs which is why it is a highly popular thermostat. Its geofencing feature allows the thermostat to know when your smartphone’s GPS signals are within a certain range or not. It adjusts the temperature automatically if no signals are found. The thermostat can be controlled from the device, both the voice assistants or the smartphone app.
4. Honeywell Home T9 – Best for more than one rooms
- Dual-band wifi
- Compatible with Amazon Alexa and Cortana, and Google Home
- Remote room sensor and multi-room focus option
- Many modes such as Home/Away to help save energy
- 7 x 4.92 x 0.94 inches display
The Honeywell Home T9 is an expensive but useful smart thermostat for those who want different temperatures in the rooms. By placing the sensors in a room, it automatically detects the temperature and humidity there and adjusts it automatically. They have a signal reach of up to 200 ft. (can vary depending on the construction of the room. It can focus on multiple rooms rather than having to choose one over the other. It is also energy saving because of its home/away mode scheduling.
Moreover, it is great for anyone who wants reminders and alerts for instance when the filter needs changing. It is also very easy-to-install and does not require a c-wire connection that is often necessary with other smart thermostats. It is low-voltage so it is compatible with most systems. Lastly, it is compatible with Amazon Alexa, in addition to Cortana and Google Home Assistant.
5. Sensi Touch ST75 – Most reasonably-priced smart thermostat
- Touch screen panel
- Compatible with Amazon Alexa, Google Home, and Apple HomeKit
- Relatively affordable
- Generates monthly usage reports
- 4 x 5.63 x 1.17 inches display
The Emerson Sensi Touch ST75 is a reasonably-priced thermostat that supports Alexa, Google Home, and Apple HomeKit. It features a black or white glossy display with a 4.2-inch colored touch screen. Emerson Sensi Touch ST75 comes with an installation manual, labels for the wiring, and is wifi-enabled. This product is ideal for single and multi-stage HVAC systems (oil, gas, or electric) as well as for heat pumps. It requires a c-wire connection so make sure to have one before you invest in it.
Emerson Sensi Touch ST75 features geofencing and thus makes automatic changes to the temperature when it detects you are out of the house or coming back in. It also sends alerts for the temperature drops to an unusual number. Scheduling is also made easy by a thermostat, where you can create your schedule from the display screen or the mobile app. Overall, it is a versatile and relatively-affordable Alexa smart thermostat.
6. ecobee3 Lite Smart Thermostat – Best automatic option
- Saves energy up to 23%
- Compatible with Alexa, Apple HomeKit, Google Assistant, Samsung SmartThings, Wink and IFTTT
- Compatible with Ecobee smart sensor
- Auto-adjusts temperature based on local weather conditions
- 05 x 1 x 4.05 inches display
The Ecobee 3 Lite is a reasonably-priced smart thermostat that is known for its smart sensors compatibility which detects the occupancy in the room. It is thus also highly energy-saving and saves about 23% on energy costs. Moreover, it adjusts with the local weather to provide the ideal comfort for the user. Ecobee 3 Lite can be installed in almost 30 minutes with the help of the step-by-step guide from their app.
It can pair with up to 32 sensors, and it is compatible with Amazon Alexa, Apple HomeKit, Google Assistant, Samsung SmartThings, Wink, and IFTTT. It is a more affordable option but with the capabilities of a smart thermostat with the most features that make your home more comfortable.
7. Honeywell Lyric T5 – Most basic Alexa thermostat
- Requires a c-wire
- Compatible with Alexa
- Adaptive recovery feature and smart alerts
- 7-day scheduling and geofencing
- 4 x 4 x 1.25 inches display
The Honeywell Home T5 is a basic smart thermostat for anyone looking for simple features but with Alexa compatibility. It does require a c-wire but apart from that, the installation is super easy. Honeywell Home T5 includes 7-day scheduling, geofencing, and auto changeover modes that make the user’s lives very easy. This thermostat also has an adaptive recovery which learns how much time is needed by the thermostat to reach the optimal temperature. It also automatically changed from heat to cool when necessary.
Moreover, it features smart alerts that let you know when the filter needs to be changed or when the temperature reaches an unusual number. In addition to being compatible with Alexa, it supports the Apple HomeKit as well. It has a square display touch screen which also adds to the aesthetics of the house.
8. Mysa Smart Thermostat – Best for electric baseboard heaters
- Ideal for high or line voltage systems
- Compatible with Alexa, Google Home, and Apple HomeKit
- 26% energy saving
- Sleek and minimalistic design
- 83 x 4.06 x 2.64 inches display
The Mysa smart thermostat is perfect for those people who have high or line voltage systems. It is compatible with baseboard heaters, fan-forced heaters, hydronic, and in-ceiling radiant heaters. Mysa smart thermostat can control electric HVAC systems up to 3800 watts at 240V. It is, however, not compatible with 12 to 24V systems such as gas, oil furnaces, or boilers. By downloading the app you can control the thermostat from your smartphone and even track your energy usage.
Moreover, it is compatible with Alexa, Apple HomeKit, SmartThings, IFTTT, and Google Assistant. Thus, you can also control the temperature with simple voice commands. What’s more is that it is equipped with lockout, vacation, and geolocation modes. Lastly, Mysa can be managed by multiple users in one home.
9. Sensibo sky – Best value for air conditioners
- Monitors humidity and temperature
- Compatible with Alexa, Google Home, and Bixby
- Has geofencing, weekly scheduling, and other smart features
- Saves about 40% on energy costs
- 23 x 2.17 x 0.67 inches display
The Sensibo sky is a small-sized thermostat that can fit into your palms. It has a matte finish and a glossy top that adds to the aesthetic of any home. It is also very easy to install, all you need to do is plug the USB cable into the system. Its climate react feature monitors the humidity and temperature and adjusts the thermostat accordingly. Moreover, the geofencing feature knows when you are home or out and makes automatic changes if not.
Moreover, it is compatible with a smart home system including Amazon Alexa and Google Home. The Sensibo app is extremely easy-to-use and also provides additional information about the temperature of each room. You can tap on one specific room and see the temperature there.
10. Ecobee4 Smart Thermostat – Most compatible with HVAC systems
- Monitors humidity and temperature
- Built-in Alexa, compatible with Google Home, Apple HomeKit, Samsung SmartThings, and IFTTT.
- Compatible with dehumidifier, gas, oil, electric, dual-fuel, conventional, and heat pump systems.
- 56 x 7.44 x 3.46 inches display
The Ecobee4 smart thermostat is similar to the Ecobee smart thermostat but its display is less fancy. It is a high-end thermostat but its compatibility with almost all kinds of HVAC systems makes it unique. It comes with one remote sensor but if you require more they can be bought separately. They detect humidity, proximity, temperature, and motion. Ecobee4 smart thermostat also features many modes such as away, home, and sleep, so that it’s easy to create your schedules.
It has a glow-in-the-dark display touchscreen that features indoor and outdoor temperatures along with the date and time. This product also has a strip of blue LED light which is activated when given a command to Alexa. It is, however, also compatible with other smart home systems such as Google Home, Apple HomeKit, Samsung SmartThings, and IFTTT.
Advantages of Smart thermostats
Choosing an Alexa thermostat is great for several reasons:
As you use the voice command feature, you can be doing anything else in the house and simply ask your voice assistant to change the temperature. You will not even require your smartphone or the device to change the temperature.
Instead of manually adjusting the thermostat each time, you can simply program a smart thermostat in advance. Some smart thermostats come with premade modes so scheduling is made even simpler.
Smart thermostats save energy in the long-run because of their smart features. Their ability to adjust the temperature when no one is around is great. Thermostats with smart sensors are better at this because they are constantly monitoring the temperature.
Things to consider before choosing the best Alexa smart thermostat
Here are some considerations to keep in mind while you select a solar-powered water pump.
The thermostat and HVAC system should have the same voltage requirements. Most HVAC systems have a 24V power but multi-stage systems, furnaces, or ACs have different voltage. These thermostats have different stages of heating and cooling and so need thermostats that are supported by them. Thus before investing in a thermostat make sure it is compatible with the HVAC system at home.
Ease of Installation
Most thermostats can be installed at home without much difficulty with the help of the manuals but others need a professional installation done. Moreover, if there is a c-wire with the thermostat then you need to make sure there is a c-wire connection with the HVAC system. The c-wire ensures continuous connectivity to the internet. Thus, if you do not want to get a c-wire connection installed then make sure you get a thermostat that does not have complicated wiring.
Monthly Reports and Reminders
Some thermostats also track your energy patterns and present reports so that you can better schedule your thermostat. This also helps in saving more energy. Many smart thermostats also give reminders for instance when the filter needs to be changed. Some also give alerts when the temperature goes too high or too low.
Some thermostats are smarter than others and have features that involve lesser involvement from the user. They have algorithms that learn the user’s usage patterns and then use them to automatically make changes to temperature accordingly. These, however, are generally more expensive than basic smart thermostats, such as the Nest Learning Thermostat (3rd Generation) .
Smart thermostats that support Alexa are great for people who already have an Alexa device at home. They allow you to change the thermostat without getting up or finding your smartphone However, if you do not have an Alexa device then you could also opt for a smart thermostat that comes with built-in Alexa such as the Ecobee Smart Thermostat . It is also our best overall Alexa-enabled thermostat.
Smart thermostats however need other considerations as well. The price, the features, and its compatibility with the HVAC system also matter. Some thermostats, for instance, come with remote sensors that allow you to have different temperatures in all rooms of the house. The Honeywell Home T9 is a good option for that especially if you have larger rooms. This article should help you choose The best Alexa thermostat and one that has all the features that you look for in a smart thermostat.