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Top Smart thermostats with voice control

17 July 2026 1 min read
Discover our ranking of the 5 best smart thermostats with voice control based on our tests.
What are the best smart thermostats with voice control in july 2026? Comparison, reviews, tests & buying guides
  1. 🏆 ecobee Smart Thermostat Premium Review: Versatile with Room for Improvement
  2. 🥈 tado° Smart Radiator Thermostat X Review: room-by-room heating control without tearing up your walls
  3. 💰 SONOFF TRVZB Review: cheap Zigbee smart radiator valve that’s great with Home Assistant but clunky with the app
  4. ⭐ Beok Smart Thermostat WR-03 Review: cheap connected control for 2‑wire boilers, with a few compromises
  5. ✨ BEOK CONTROLS WiFi Thermostat Review: cheap way to make an old boiler a bit smarter

Ranking

#1 🏆 Best choice
Smart Thermostat Premium with Siri and Alexa and Built in Air Quality Monitor and Smart Sensor with SmartSensor for Doors and Windows 2-Pack, White Thermostat + Door & Window Sensors

‎ecobee

Smart Thermostat Premium with Siri and Alexa and Built in Air Quality Monitor and Smart Sensor with SmartSensor for Doors and Windows 2-Pack, White Thermostat + Door & Window Sensors

🔥 Populaire
  • Versatile smart home integration
  • Solid build quality
  • Includes SmartSensors
The ecobee Smart Thermostat Premium is a strong contender in the smart thermostat market, especially for those who value integration with other smart home systems like Siri and Alexa. Its sleek design and robust build quality make it a solid choice for modern homes. The included SmartSensors are a nice addition for added security and comfort.However, if you’re not planning to use all the features, particularly the air quality monitor and smart home integrations, you might find the price a bit steep. The requirement of a subscription for full security features is also something to consider.Overall, for tech-savvy users looking to integrate multiple smart features into their home, this thermostat offers good value despite the higher cost. But for those just seeking basic smart home temperature control, there are more budget-friendly options available.
8.3 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon
#2
° Smart Radiator Thermostat X, Temperature Control via App and Smart Speaker (Alexa, Siri, Google Assistant), Save Heating Costs, DIY Installation 49 mm x 67 mm x 67 mm X 1x Add-on Radiator Thermostat

tado

° Smart Radiator Thermostat X, Temperature Control via App and Smart Speaker (Alexa, Siri, Google Assistant), Save Heating Costs, DIY Installation 49 mm x 67 mm x 67 mm X 1x Add-on Radiator Thermostat

  • Stable and precise room-by-room temperature control once configured
  • Rechargeable battery with roughly one charge per heating season
  • Integrates well with Matter/Thread and smart speakers (Alexa, Google, Siri)
Overall, the tado° Smart Radiator Thermostat X is a solid smart valve that does what it claims, as long as you’re the right kind of user. If you already have a Matter/Thread setup at home and you want proper room-by-room control without rewiring your heating system, it fits in nicely. The hardware feels solid, the regulation is stable once you’ve tweaked the temperature offset, and the app and smart speaker control make daily use simple. Battery life is good enough that charging it once per season isn’t a big drama.Where it falls short is mainly around ecosystem and cost. It’s not compatible with older tado systems, so anyone already invested in V3+ gear will feel rightly annoyed. On top of the price of the valve itself, you may need a Bridge X or other Thread border router, maybe another Matter device for a stronger mesh, and possibly the AI Assist subscription if you want all the automation they advertise. That pushes the real cost up, especially if you’re doing a whole-home setup.I’d recommend this to people who are already comfortable with smart home tech, who plan to control several rooms, and who are okay paying a bit more upfront for more comfort and some energy savings over time. If you just want a simple cheap way to turn a single radiator up and down, or if you’re already on an older tado system, this is probably not the smartest place to put your money right now.
8.1 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon
#3 💰 Best price
Zigbee Thermostatic Radiator Valve, TRVZB, Add-On Smart Radiator Valve For Smart Home Control, Easy Installation, Save Heating Costs, Works With Alexa, Google Home White

SONOFF

Zigbee Thermostatic Radiator Valve, TRVZB, Add-On Smart Radiator Valve For Smart Home Control, Easy Installation, Save Heating Costs, Works With Alexa, Google Home White

  • Works very well with Home Assistant, Zigbee2MQTT and ZHA once paired correctly
  • Metal valve connector and multiple adapters give a solid, flexible fit on most radiators
  • Good price compared to premium brands, making multi-room setups more affordable
Overall, the SONOFF TRVZB is a good budget smart radiator valve for people who already have a Zigbee setup or Home Assistant and aren’t scared of a bit of tinkering. The hardware is decent, the metal connector is reassuring, and the valve reacts quickly to commands. It works well with Zigbee2MQTT and ZHA, and once you’ve set up your automations, it quietly controls room temperatures and helps you avoid heating empty rooms. For this price range, that’s already not bad.Where it falls down is the software experience on the official side. The eWeLink app is usable but clunky, and several users (including me) have run into failed commands, firmware updates that won’t go through, and odd behavior like the valve moving and lighting up for no clear reason at night. In a bedroom, the combination of motor noise and bright display can get annoying. Compared directly to Tado or similar systems, you feel the difference in polish and reliability, especially if you rely only on the vendor app.Who is it for? If you’re a Home Assistant user, or already running a SONOFF Zigbee hub, and you want cheap but functional room-by-room heating control, it’s a solid option. You’ll get the most out of it by pairing it with external temperature sensors and writing your own automations. Who should skip it? Anyone who wants a super smooth, app-first experience, or who is very sensitive to noise/light in the bedroom, should probably save up and go for something like Tado, even if it costs more. In short: good value for techy users, a bit frustrating for plug-and-play folks.
8.1 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon
#4
Beok Smart Thermostat for Combi Boiler, Wifi thermostat 2-Wire for Boiler Heating Compatible with Tuya app, Programmable Digital with Voice Control, Battery-powered Surface Mount White

BEOK CONTROLS

Beok Smart Thermostat for Combi Boiler, Wifi thermostat 2-Wire for Boiler Heating Compatible with Tuya app, Programmable Digital with Voice Control, Battery-powered Surface Mount White

  • Good value: Wi‑Fi, app control, and scheduling for a low price
  • Simple 2‑wire dry contact relay works well with many older combi boilers
  • Tuya/Smart Life app is stable and responsive, with up to 6 time slots per day
After using the Beok WR‑03 for a while, my overall impression is pretty straightforward: it’s a cheap smart thermostat that does its core job correctly, with some rough edges. It switches the boiler on and off at roughly the right temperature, the Wi‑Fi connection is stable, and the Tuya/Smart Life app works better than I expected for this price range. Scheduling is flexible enough for everyday life, and being able to tweak everything from my phone is a real practical benefit.On the flip side, the build quality is clearly budget and the documentation is weak. Installation and setup are manageable if you’re a bit handy and not scared of basic wiring and app pairing, but it’s not idiot‑proof. Voice control works, but especially with Alexa you may need to fiddle a bit. Long‑term durability is also a question mark: it feels fragile, so I wouldn’t treat it roughly or expect it to last forever.Who is it for? People with a 2‑wire combi boiler who want simple smart control, are okay with a no‑frills plastic box on the wall, and want to spend as little as possible. Who should skip it? If you hate dealing with tech, want premium build and a super polished experience, or need advanced features like learning algorithms and detailed energy reports, you’re better off with a more expensive brand. For me, it’s a good value, pragmatic choice, as long as you go in with realistic expectations.
8.1 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon
#5
WiFi thermostat for Boiler Heating Smart Thermostat for Combi Boiler Compatible with Tuya app, 2-Wire Programmable Digital Wireless Thermostat with Voice Control, Battery-powered R9V

BEOK CONTROLS

WiFi thermostat for Boiler Heating Smart Thermostat for Combi Boiler Compatible with Tuya app, 2-Wire Programmable Digital Wireless Thermostat with Voice Control, Battery-powered R9V

  • Easy upgrade from a basic 2‑wire thermostat to Wi‑Fi without touching mains wiring
  • Works with Tuya / Smart Life, Alexa and Google Assistant for remote and voice control
  • Good price for basic smart features like scheduling and app control
Overall, the BEOK CONTROLS WiFi thermostat is a practical budget upgrade if you’re starting from a basic 2‑wire wall thermostat and just want app control and scheduling without touching mains wiring. It does the core job: it controls the boiler reliably enough, works with Tuya / Smart Life, and integrates with Alexa and Google Assistant. The installation is fairly simple, and for the price, you get a decent set of features.On the flip side, you clearly feel the cost savings. The plastic and screen are basic, the lack of backlight is annoying, the terminals and back box are a bit tight for thicker cables, and the Wi‑Fi can be flaky in some setups. The thermostat is also quite heavy on batteries if you keep Wi‑Fi enabled, so you need to accept regular AA changes. It’s not a polished product; it’s a functional one.I’d recommend it to people who are comfortable with basic DIY, already use Tuya/Smart Life, and want a cheap, no‑frills smart thermostat for a combi boiler or dry contact boiler. If you want rock‑solid Wi‑Fi, a nicer interface, long battery life, or a “set and forget” premium feel, you should probably skip this and look at a better‑known brand, even if it costs more. This one is fine if your priority is saving money and you don’t mind a few compromises.
6 /10
★★★★★ ★★★★★
👌 Good See full review →
See offer Amazon

Comparison table : Smart thermostats with voice control

Overall score Value for money Design Performance Battery Durability Presentation
Smart Thermostat Premium with Siri and Alexa and Built in Air Quality Monitor and Smart Sensor with SmartSensor for Doors and Windows 2-Pack, White Thermostat + Door & Window Sensors
#1 ‎ecobee
Smart Thermostat Premium with Siri and A...
See offer Amazon
8.3/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ - - -
° Smart Radiator Thermostat X, Temperature Control via App and Smart Speaker (Alexa, Siri, Google Assistant), Save Heating Costs, DIY Installation 49 mm x 67 mm x 67 mm X 1x Add-on Radiator Thermostat
#2 tado
° Smart Radiator Thermostat X, Temperatu...
See offer Amazon
8.1/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★
Zigbee Thermostatic Radiator Valve, TRVZB, Add-On Smart Radiator Valve For Smart Home Control, Easy Installation, Save Heating Costs, Works With Alexa, Google Home White
#3 SONOFF
Zigbee Thermostatic Radiator Valve, TRVZ...
See offer Amazon
8.1/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★
Beok Smart Thermostat for Combi Boiler, Wifi thermostat 2-Wire for Boiler Heating Compatible with Tuya app, Programmable Digital with Voice Control, Battery-powered Surface Mount White
#4 BEOK CONTROLS
Beok Smart Thermostat for Combi Boiler,...
See offer Amazon
8.1/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★
WiFi thermostat for Boiler Heating Smart Thermostat for Combi Boiler Compatible with Tuya app, 2-Wire Programmable Digital Wireless Thermostat with Voice Control, Battery-powered R9V
#5 BEOK CONTROLS
WiFi thermostat for Boiler Heating Smart...
See offer Amazon
6/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★

Frequently asked questions

According to our tests, the best smart thermostats with voice control is the Smart Thermostat Premium with Siri and Alexa and Built in Air Quality Monitor and Smart Sensor with SmartSensor for Doors and Windows 2-Pack, White Thermostat + Door & Window Sensors with a score of 8.3/10.

The cheapest smart thermostats with voice control in our comparison is the Zigbee Thermostatic Radiator Valve, TRVZB, Add-On Smart Radiator Valve For Smart Home Control, Easy Installation, Save Heating Costs, Works With Alexa, Google Home White.

The most popular smart thermostats with voice control is the Smart Thermostat Premium with Siri and Alexa and Built in Air Quality Monitor and Smart Sensor with SmartSensor for Doors and Windows 2-Pack, White Thermostat + Door & Window Sensors with 3 775 customer reviews.

To choose a smart thermostats with voice control, we recommend comparing performance, build quality, value for money and user reviews. Our comparison table above helps you make the right choice.

We have tested 5 Smart thermostats with voice control to establish this ranking.
#1 Smart Thermostat Premium with Siri and Alexa and Built in Air Quality Monitor and Smart Sensor with SmartSensor for Doors and Windows 2-Pack, White Thermostat + Door & Window Sensors
ecobee
Premium Smart Thermostat with Sensors
8.3/10 Best choice
See offer Amazon