Best smart thermostat 2022: Heat your home with Nest, Amazon and more (reviewed)

Thermostats, on the face of it, sound pretty dull, don’t they? Of course, we need them, but can anyone make them exciting or clever?

Actually, yes. A smart thermostat has a lot of advantages and now that the gas and electricity bills for around 22 million of us are set to increase by £693 per household from April, they’re more important than ever. You can often control it with your voice or through a smartphone app, which might save you a trip downstairs to turn the heating up while you stay warm in bed, for instance.

Better yet, if you’re heading home after a few days away, you can switch the heating on via your smartphone before you begin your journey so you don’t return to a freezing house. In our experience, warming a cold house always takes longer than you think, so it’s best to plan ahead.

Some smart thermostats work in tandem with other smart gadgets, meaning if a smoke alarm detects smoke, it can turn the boiler off at the same time to prevent it from making a fire worse. Others work with smart radiator units to control the temperature in each room more precisely.

Then there are those which work in conjunction with your smartphone so that the system knows when everyone’s left the house and can turn the temperature down – no longer will you go away on holiday and realize on day two that you left the heating at full blast.


How we tested

We tested a range of smart thermostats for simplicity of set-up and use, flexibility of system and level of features. There were our favourites.

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The best smart thermostats for 2022 are:

  • best overall – Nest learning thermostat: £219,
  • Best for control in multiple areas – Honeywell evohome: £292.35,
  • Best for simplicity – Tado smart thermostat: £179.99,
  • Best for design – Hive active heating 2: £161.10,
  • Best on tighter budgets – Nest thermostat E: £199,

Nest learning thermostat

Best: Overall

  • Dimensions: 84mm x 84mm x 30mm
  • Sensors: Temperature sensors, humidity sensor, proximity sensor

Nest broke the mold when it released its first smart thermostat – this is the third-generation model. It is the most advanced thermostat available and works well with other Nest products such as the company’s smoke and carbon monoxide detector and home security cameras.

It’s very easy to set up and control, with a schedule set up on the Nest smartphone app. This is sophisticated: choose either that the radiators come on at a set time or that they reach “true radiant”, that is the room is at the desired temperature at a certain time, in which case the boiler will kick in rather earlier.

The Nest learning thermostat can spot when you’re out of the house and turn the heating down or off accordingly. The learning part of the name refers to the fact that the thermostat clocks how you use it and adjusts what it does accordingly, though you can always override this with one button press.

Honeywell evo home

Best: For control in multiple areas

  • Dimensions: 139mm x 100mm x 20mm
  • Sensors: Temperature sensors

This system comes with two wireless radiator controllers, though it’s also available without them. The benefit is that radiators can be individually controlled, so you don’t have to go round to separate rooms to ensure you get exactly the warmth where you need it. Not only does it mean you’re not heating unoccupied rooms but if one person likes a toasty bedroom and another a cooler one, both can be happy.

Tado smart thermostat

Best: For simplicity

  • Dimensions: 104mm x 104mm x 20mm
  • Sensors: Temperature sensors, humidity sensor, ambient light sensor

The Tado has the simplest design of all, but it still looks good. Tado has always built in compatibility with Apple’s HomeKit system, which is not the case with most systems. It means you can control the Tado with your voice, whether you have Google, Alexa or Siri as your virtual assistant. Like the Honeywell, you can add individual radiator thermostats to the mix for greater granular control. However, it doesn’t have the learning feature of the Nest, so it won’t adjust the schedules you set, and setting those schedules took more input than some rivals.

hive active heating 2

Best: Design

  • Dimensions: 95.9mm x 95.9mm x 46.2mm (inc. dial)
  • Sensors: Temperature sensors, humidity sensor, proximity sensor

The Hive thermostat is certainly attractive, so you won’t worry about it being prominently placed. There are other compatible elements in the Hive line-up, such as radiator valves, smart window and door sensors, smart lights, camera, motion sensors and smart plugs, so you can easily expand your smart home beyond your heating when you’re ready .

None of them looks as smart as the thermostat, mind. Like the Nest (£219,, the Hive can be set to spot when you leave the house and adjust the heating accordingly. Hive is part of British Gas, though you don’t need to be a British Gas customer to get it. Note that you need to add £70 for professional installation, in most cases.

Nest thermostat E

Best: On tighter budgets

  • Dimensions: 390mm x 192mm x 215mm
  • Sensors: Temperature sensors, humidity sensor, proximity sensor

This is similar to the Nest learning thermostat above, though you’ll notice that the middle word is absent here: there are no learning capabilities. It’s also not as smart and made of plastic rather than glass and metal. But much of the rest of this thermostat is like its pricier sibling, including a simple push on the screen to make things happen, or operate from a smartphone app. It’s simple and effective – though the pricier one is worth the extra.

Smart thermostat FAQs

What to look for in a smart thermostat

Setting them apart from other boiler controllers, smart thermostats have many cost/fuel-saving features. The best ones to look out for include hot water control, multi-room control, the ability to learn your routine, motion sensors, GPS tracking and weather-responsive functionality.

Is it worth getting a smart thermostat?

There are several factors to consider before installing a smart thermostat. If easy control is what you want, then going “smart” with your heating is probably for you. If you don’t already have a boiler controller, you can save money by opting for a smart thermostat by being able to control your heating remotely, see how much you’re using and create different heating zones.

Can you install a smart thermostat yourself?

Many models require professional installation, adding to your overall cost but there are smart thermostats on the market that can be installed by a competent DIYer.

Potential disadvantages to smart thermostats

Among the cons, you may have to pay higher upfront costs or become locked into a brand and its compatible products. The less tech savvy among us might struggle getting used to a smarter system, too.

What is the difference between a smart thermostat and a wifi thermostat?

Unlike smart thermostats, wifi models don’t have the ability to learn from your usage nor the means of programming to automatically change the temperature in your home at a certain time. Smart thermostats can help you save on your bills over time.

The verdict: Smart thermostats

Nest is the standout brand here – its Nest learning thermostat is really excellent: extremely easy to use but full of worthwhile features, and the more affordable Nest thermostat E is also decent. Hive active heating, meanwhile, offers a great-looking thermostat and works as a strong foundation to a smart home if you add other elements later.

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For extra cosiness, snuggle up under one of the best electric blankets that will keep you warm through winter

IndyBest product reviews are unbiased, independent advice you can trust. On some occasions, we earn revenue if you click the links and buy the products, but we never allow this to bias our coverage. The reviews are compiled through a mix of expert opinion and real-world testing.

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George Holan

George Holan is chief editor at Plainsmen Post and has articles published in many notable publications in the last decade.

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