Top 5: best smart thermostats for central heating and cooling (June 2026)

29 June 2026 1 min read
Discover our ranking of the 5 best smart thermostats for central heating and cooling based on our tests.

Ranking

#1 πŸ† 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

⭐ TrΓ¨s bien notΓ© πŸ”₯ 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
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🌟 Excellent See full review β†’
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#2
Hive Thermostat For Heating Control (Combi Boilers), With Hive Nano 3 Hub (OpenTherm), White, A Combi Boiler is Required

Hive

Hive Thermostat For Heating Control (Combi Boilers), With Hive Nano 3 Hub (OpenTherm), White, A Combi Boiler is Required

  • Simple, clear thermostat with easy-to-read backlit screen and straightforward buttons
  • Reliable app and Alexa control once set up, with useful schedules, boosts and Holiday mode
  • OpenTherm support gives smoother heating and can reduce gas use compared to basic on/off stats
After living with the Hive Thermostat and Nano 3 Hub for a while, my overall view is pretty simple: it’s a solid, practical smart thermostat for combi boilers that does what most people need without being overcomplicated. The control from the app and Alexa works well, the schedules are flexible enough, and OpenTherm gives smoother heating and likely a bit less gas use over time. Once the system is up and running, you mostly forget about it, which is exactly what I want from heating controls.It’s not perfect. The app setup can be frustrating, especially if the hub or receiver ends up in the wrong mode and you have to do the reset dance. There are flashier thermostats with nicer screens and more advanced features if you’re into that. But for a typical home with a combi boiler, this hits a good balance between price, features, and ease of use. I’d recommend it to anyone who wants to stop wasting money heating an empty house and likes the idea of turning the heating on from their phone before they get home.If you’ve got a system boiler with a tank, want deep energy analytics, or plan to run multiple heating zones with smart radiator valves from day one, you might want to look at other ecosystems. But if you just want reliable, straightforward heating control that feels modern without being over the top, this Hive kit is a pretty safe bet.
8.5 /10
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🌟 Excellent See full review β†’
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#3 πŸ”₯ 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

πŸ”₯ 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
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🌟 Excellent See full review β†’
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#4 πŸ’° Best price
WiFi Smart Thermostat for Boiler 3A 220V Compatible with Alexa, Digital White Boiler Thermostat Programmable Tuya/Smart Life APP Remote Control, Dry Contact 3A Boiler White

KETOTEK

WiFi Smart Thermostat for Boiler 3A 220V Compatible with Alexa, Digital White Boiler Thermostat Programmable Tuya/Smart Life APP Remote Control, Dry Contact 3A Boiler White

πŸ”₯ Populaire
  • Good value: WiFi, app, and Alexa/Google control for a relatively low price
  • Stable heating control with flexible 5-2 / 6-1 / 7-day schedules and up to 6 periods per day
  • Clean modern look and easy daily use via app and voice commands once installed
Overall, the KETOTEK WiFi Smart Thermostat is a practical, budget-friendly upgrade if you currently have a very basic boiler thermostat and want app and voice control without spending big-brand money. It handles the essentials well: stable temperature control, flexible scheduling, remote access via Tuya/Smart Life, and simple Alexa/Google commands. Once set up, it mostly disappears into the background and just does its job, which is what I want from a thermostat.It’s not perfect. The unit is quite deep, so you need enough space in the wall box or a spacer. The app is usable but a bit clunky in places, and the first configuration menus can feel a bit nerdy. The design is clean but basic, with a bright backlight that some people may find a bit much in a dark room. Still, for the price, these are trade-offs I can live with. If you’re comfortable with wiring (or willing to pay an electrician) and you just want reliable on/off control, schedules, and remote tweaks from your phone, it’s a good deal. If you want advanced learning features, detailed energy stats, or a super polished ecosystem, you’re better off saving up for a higher-end model.
8.3 /10
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🌟 Excellent See full review β†’
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#5
Smart Home Thermostat Radiator Valve Actuator Smart TRV Thermostatic Valve Temperature Controller(TRV801Z 4PCS)

CKAFZMYJQBT

Smart Home Thermostat Radiator Valve Actuator Smart TRV Thermostatic Valve Temperature Controller(TRV801Z 4PCS)

  • Very affordable way to add smart control to multiple radiators at once
  • Decent temperature control with weekly programming and child lock
  • Battery-powered (3Γ—AA) with simple, no-wiring installation and support for common M30/M28 threads
After living with these CKAFZMYJQBT TRV801Z smart radiator valves for a while, my opinion is pretty straightforward: they work, but they feel budget. Temperature control is decent, the app connection does what it needs to, and the weekly schedule runs reliably once you’ve set it up. The build is mostly plastic but doesn’t feel like it will fall apart right away, and battery usage seems low so far. It’s basically a functional smart TRV set without any real polish.I’d recommend this pack to people who want to equip several radiators cheaply, are okay with a slightly clunky interface, and don’t mind digging through a basic manual and app settings. If your goal is to stop heating empty rooms and get some control room by room without spending a fortune, it gets the job done. On the other hand, if you hate fiddling with settings, want slick apps, and prefer known brands with strong support, you should probably skip this and pay more for a more established system.
6 /10
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πŸ‘Œ Good See full review β†’
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Comparison table : Smart thermostats for central heating and cooling

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 β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜…
Hive Thermostat For Heating Control (Combi Boilers), With Hive Nano 3 Hub (OpenTherm), White, A Combi Boiler is Required
#2 Hive
Hive Thermostat For Heating Control (Com...
See offer Amazon
8.5/10 β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… -
T6R Smart Thermostat works with Apple HomeKit and Amazon Alexa replacement for NEST, TADO, .. - Wireless Black
#3 Honeywell Home
T6R Smart Thermostat works with Apple Ho...
See offer Amazon
8.4/10 β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… - - β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜…
WiFi Smart Thermostat for Boiler 3A 220V Compatible with Alexa, Digital White Boiler Thermostat Programmable Tuya/Smart Life APP Remote Control, Dry Contact 3A Boiler White
#4 KETOTEK
WiFi Smart Thermostat for Boiler 3A 220V...
See offer Amazon
8.3/10 β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… - β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜…
Smart Home Thermostat Radiator Valve Actuator Smart TRV Thermostatic Valve Temperature Controller(TRV801Z 4PCS)
#5 CKAFZMYJQBT
Smart Home Thermostat Radiator Valve Act...
See offer Amazon
6/10 β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… β˜…β˜…β˜…β˜…β˜… -

Frequently asked questions

According to our tests, the best smart thermostats for central heating and cooling 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 smart thermostats for central heating and cooling in our comparison is the WiFi Smart Thermostat for Boiler 3A 220V Compatible with Alexa, Digital White Boiler Thermostat Programmable Tuya/Smart Life APP Remote Control, Dry Contact 3A Boiler White.

The most popular smart thermostats for central heating and cooling 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 smart thermostats for central heating and cooling, 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 for central heating and cooling 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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