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Best Smart Thermostats 2024

The 5 best high-end smart thermostats (June 2026)

17 June 2026 1 min read
Discover our ranking of the 3 best high-end smart thermostats based on our tests.

Ranking

#1 🏆 Best choice
Hive Thermostat for Heating (Combi Boiler) with Hive Hub - Energy Saving Thermostat – to highlight the boiler needed is a combi boiler, Black,chrome Single Without Pro-Install

Hive

Hive Thermostat for Heating (Combi Boiler) with Hive Hub - Energy Saving Thermostat – to highlight the boiler needed is a combi boiler, Black,chrome Single Without Pro-Install

⭐ Très bien noté 🔥 Populaire
  • Reliable app control with useful scheduling, holiday mode and frost protection
  • Geolocation and remote access help avoid heating an empty house
  • Looks modern on the wall and works with Alexa/Google Assistant
The Hive Thermostat for Heating (Combi Boiler) with Hub is a solid, no-nonsense smart upgrade for a typical combi-boiler home. It looks decent on the wall, the app control works well, and features like scheduling, geolocation, frost protection and holiday mode actually help in real life rather than just ticking marketing boxes. Once it’s set up properly and the hub is in a good spot, it runs quietly in the background and you mostly forget about it – apart from the convenience of tweaking the heating from your phone or with your voice.It’s not perfect. The lack of a backlight on the thermostat is a bit cheap at this price, the setup can be confusing if you’re not comfortable with wiring and basic networking, and Hive’s online help is weaker than it should be when things go wrong. You need to be ready to reset and repair devices if the hub throws a wobbly, or pay someone to handle all that. But in terms of day-to-day comfort and likely energy savings, it gets the job done and feels like a sensible middle-ground choice.I’d recommend it to people with a combi boiler who want practical smart control without going overboard, and who don’t mind a bit of tech tinkering during setup. If you’re completely allergic to tech issues, or you want the fanciest learning features and slickest design, you might be happier with a higher-end rival or a bundle that includes professional installation. For most average users though, Hive is a pretty fair balance of features, reliability and price.
8.5 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon
#2 🔥 Most popular
T6R Smart Thermostat works with Apple HomeKit and Amazon Alexa replacement for NEST, TADO, .. - Wireless Black

Honeywell Home

T6R Smart Thermostat works with Apple HomeKit and Amazon Alexa replacement for NEST, TADO, .. - Wireless Black

🔥 Populaire
  • Accurate temperature control with flexible scheduling and pre-heating
  • Works with Apple HomeKit, Alexa, Google Home, and IFTTT while still functioning fully offline
  • Wireless thermostat unit that’s easy to place and has a clear, always-on backlit display
The Honeywell Home T6R is a sensible, no-nonsense smart thermostat. It’s not trying to be flashy, it doesn’t drown you in gimmicks, and it mostly just gets on with controlling your heating in a smarter way than the old wall box you probably have now. The temperature control is accurate, the schedules are flexible, and features like pre-heating and OpenTherm support help keep the house comfortable without big swings. The fact it keeps working as a normal programmable thermostat even if the internet or Wi‑Fi drops is a big plus.Where it stands out is compatibility: HomeKit, Alexa, Google Home, IFTTT – it talks to pretty much everything. If you’ve got a mix of Apple and Android users at home, or you’re slowly building a smart home without wanting to be tied to one brand, that matters. On the downside, the Wi‑Fi setup can be fiddly, and you may see the odd connectivity hiccup, especially if your home network is already shaky. Installation is also not trivial if your system wiring is complex, so in many cases you should budget for an installer.I’d recommend the T6R to people who already have a standard boiler setup (especially combi or single-zone) and want practical smart control without going down the route of smart valves on every radiator. It suits households that like the idea of remote control and voice commands, but still want something that works fine from the wall unit for less techy family members. If you’re after a super glossy design statement, or you want room-by-room control out of the box, or you absolutely hate dealing with Wi‑Fi quirks, you might be happier with a different system. For most everyday users who just want their heating to be a bit smarter and easier to manage, it’s a pretty solid choice.
8.4 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon
#3 💰 Best price
T6 Wired Smart Thermostat - Black - Touchscreen Heating Control with Geofencing, Alexa, Apple & Google - 868 MHZ - Easy Install & App Setup for Combi Boiler & More - CM907 Replacement Wire Black

Honeywell Home

T6 Wired Smart Thermostat - Black - Touchscreen Heating Control with Geofencing, Alexa, Apple & Google - 868 MHZ - Easy Install & App Setup for Combi Boiler & More - CM907 Replacement Wire Black

🔥 Populaire
  • Reliable, accurate temperature control with flexible 7-day or 5/2 schedules
  • Works well offline as a normal programmable thermostat, but also offers app and voice control
  • Supports OpenTherm and major ecosystems (Apple HomeKit, Google Assistant, Alexa, IFTTT)
The Honeywell Home T6 wired smart thermostat is basically a modern, connected version of the old CM907-style controllers, and that’s meant in a good way. It handles the basics – stable temperature, flexible schedules, clear display – and then layers on app control, voice support, and geofencing. It’s not the flashiest smart thermostat, and the app/Wi‑Fi setup can be a bit fiddly the first time, but once it’s in, it mostly just works and stays out of your way.This is a solid fit if you have a combi boiler or simple heating system and want to ditch an old programmer for something easier to live with. It’s especially good if you’ve got a mix of techy and non-techy people in the house, because you can fully use it from the wall without touching the app, while still having all the smart stuff in the background. If your boiler supports OpenTherm, that’s a nice bonus for smoother control. On the flip side, if you’re chasing dramatic energy savings or want fancy room-by-room control with smart radiator valves, this isn’t the right tool – you’ll need a more complex (and pricier) system.Overall, I’d call it a practical, no-nonsense upgrade: not perfect, but reliable, easy to live with, and a clear step up from a basic thermostat. If you’re already annoyed by your current heating controls and want something smarter without turning your house into a science project, this hits a good middle ground.
8.4 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon

Comparison table : High-end smart thermostats

Overall score Value for money Design Battery Durability Performance Presentation Effectiveness
Hive Thermostat for Heating (Combi Boiler) with Hive Hub - Energy Saving Thermostat – to highlight the boiler needed is a combi boiler, Black,chrome Single Without Pro-Install
#1 Hive
Hive Thermostat for Heating (Combi Boile...
See offer Amazon
8.5/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★
T6R Smart Thermostat works with Apple HomeKit and Amazon Alexa replacement for NEST, TADO, .. - Wireless Black
#2 Honeywell Home
T6R Smart Thermostat works with Apple Ho...
See offer Amazon
8.4/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ - - ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★
T6 Wired Smart Thermostat - Black - Touchscreen Heating Control with Geofencing, Alexa, Apple & Google - 868 MHZ - Easy Install & App Setup for Combi Boiler & More - CM907 Replacement Wire Black
#3 Honeywell Home
T6 Wired Smart Thermostat - Black - Touc...
See offer Amazon
8.4/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★

Frequently asked questions

According to our tests, the best high-end smart thermostats is the Hive Thermostat for Heating (Combi Boiler) with Hive Hub - Energy Saving Thermostat – to highlight the boiler needed is a combi boiler, Black,chrome Single Without Pro-Install with a score of 8.5/10.

The cheapest high-end smart thermostats in our comparison is the T6 Wired Smart Thermostat - Black - Touchscreen Heating Control with Geofencing, Alexa, Apple & Google - 868 MHZ - Easy Install & App Setup for Combi Boiler & More - CM907 Replacement Wire Black.

The most popular high-end smart thermostats is the T6R Smart Thermostat works with Apple HomeKit and Amazon Alexa replacement for NEST, TADO, .. - Wireless Black with 2 343 customer reviews.

To choose a high-end smart thermostats, 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 3 High-end smart thermostats to establish this ranking.
#1 Hive Thermostat for Heating (Combi Boiler) with Hive Hub - Energy Saving Thermostat – to highlight the boiler needed is a combi boiler, Black,chrome Single Without Pro-Install Hive Thermostat for Heating (Combi Boiler) with Hive Hub - Energy Saving Thermostat – to highlight the boiler needed is a combi boiler, Black,chrome Single Without Pro-Install
8.5/10 Best choice
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