7 Best Smart Thermostats of 2020 in UK

Our Pick For March

Google Nest T3028GB Nest Learning Thermostat, 3rd Generation, silver, No Installation
2,178 Reviews
Google Nest T3028GB Nest Learning Thermostat, 3rd Generation, silver, No Installation
  • Connected programmable thermostat that lets you control your heating more efficiently. You can...
  • Change the temperature and more from your smartphone (iOS and Android).
  • Smart programming to help you save energy. The Nest thermostat smartly adjusts itself to your...
  • Uses your phones location and built-in activity sensors to automatically avoid heating an empty...

Table of Contents

Top 3 Best-Sellers right now

Bestseller No. 1
Hive Active Heating and Hot Water Thermostat Without Professional Installation-Works with Amazon...
1,882 Reviews
Hive Active Heating and Hot Water Thermostat Without Professional Installation-Works with Amazon...
  • Heating Boost - For up to six hours
  • Heating - Set up to 6 daily time slots
  • Automatic Frost Protection - Helps prevent frozen pipes
  • Holiday Mode - Tell Hive your holiday dates and come back to a warm home
SaleBestseller No. 2
Google Nest T3028GB Nest Learning Thermostat, 3rd Generation, silver, No Installation
2,178 Reviews
Google Nest T3028GB Nest Learning Thermostat, 3rd Generation, silver, No Installation
  • Connected programmable thermostat that lets you control your heating more efficiently. You can...
  • Change the temperature and more from your smartphone (iOS and Android).
  • Smart programming to help you save energy. The Nest thermostat smartly adjusts itself to your...
  • Uses your phones location and built-in activity sensors to automatically avoid heating an empty...
SaleBestseller No. 3
tado Smart Radiator Thermostat (vertical mounting) - Quattro Pack, Add-ons for Multi-Room Control,...
166 Reviews
tado Smart Radiator Thermostat (vertical mounting) - Quattro Pack, Add-ons for Multi-Room Control,...
  • Additional product of the tado starter kits: Add additional Smart Radiator Thermostats to your setup...
  • Upgrade to Multi-room Control to maximise your comfort and energy savings. Manage all zones and...
  • Works with all standard radiators with thermostatic radiator valves. Simply replace the old...
  • tado Starter Kit (V2, V3, V3+) including the Internet Bridge forms the basis of your setup

Which is the Best Smart Heating Device?

1. NEST LEARNING THERMOSTAT – 3RD Generation Smart Thermostat

Nest Learning Thermostat
View on Amazon

At A Glance

  • Hot Water control
  • Remote Control
  • Works with Amazon Alexa & Google Home voice control

In A Few Words

Your thermostat controls 60% of your energy bill and because the Nest Thermostat learns from you, it understands the temperature you prefer when at home and turns it down when you are away, saving you a fortune.  It even learns how your home heats up or how draughty it is and just uses the energy required.



  • High resolution colour screen: 24 bit colour LD, 480 x 480 resolution at 229 pixel per inch, 5.3 diameter
  • Part Number: T3010GB
  • Item Weight: 1 Kg
  • Product Dimensions: 8.4 x 3.2 x 8.4 cm
  • Battery included: 1 Lithium Polymer rechargeable
  • Sensors: Temperature, Humidity, Near-field activity, Far-field activity, Ambient light
  • Size: No installation
  • Colour: Stainless Steel
  • Style: Thermostat
  • Certification: Certified frustration-free
  • Connectivity Requirements: Wi-Fi connection with Internet access, Smartphone or tablet with iOS 8 or later, or Android 4 or later, Free Nest account

Box Contains:

  • 1 x Display
  • 1 x Base
  • 1 x Heat Link
  • 1 x Power cord
  • 1 x Power plug
  • 1 x Optional trim plate
  • 1 x Wall screws
  • 1 x Installation Guide and warranty
  • 1 x Welcome Guide
  • 1 x Nest Pro installation card


The 3rd generation Nest Learning Thermostat is slimmer, sleeker and very elegant.  It features a large, bright display as well as Farsight: you can see the time and temperature you have set from far away.  This device also controls your hot water tank.  Nest Thermostat learns the temperature you prefer and programs itself.  It employs built-in sensors to check that no-one is at home and it knows how long it takes to heat your home to ensure the temperature is perfect when you arrive.  When you leave, it turns itself down to save energy.  You can also check your energy history with the Nest app.


The Nest Learning Thermostat is compatible with most central heating systems including:

  • Combi boilers and heat only boilers, domestic hot water tanks
  • Air-source and ground source heat pumps (heating only)
  • Zoned systems (one Nest Thermostat per zone), heating systems with OpenTherm technology
  • Hydronic underfloor systems

With the Auto-Schedule feature, there is no more programming required.  The Nest device learns from you and just programs itself.  The 3rd Generation device also has Auto-Away which means it will turn itself down after you leave to conserve energy. It has built-in sensors to check that no-one is at home. The device can control the hot water tank, and you can adjust the schedule from your mobile.  It is compatible with Amazon Alexa and Google Home voice control.  There is remote control so that you can alter the temperature, check your energy history and even receive an alert should your home get too cold.

  • Slim, sleek and compact
  • Easy to use
  • Money saver
  • Fast learning & efficient

Some customers found the Smart features behaved unpredictably, especially if you don’t adhere to a set schedule which can confuse the learning on the device.  However, Nest has responded:

”It is true that a bit of predictability is required in your schedule. We’re not quite at the level yet of fully knowing what the home owners every move might be but if it helps, we’re probably working on it already!”

Our Opinion

We found this to be a remarkable device it even turns the heating off if it is sunny outside, or turns it on if it is snowing!  It learns your habits and adjusts accordingly.  Once you have tried this heating device you will wonder how you ever managed without it.  We would highly recommend it.


2. NEST LEARNING THERMOSTAT – A more budget pick

Nest Learning Thermostat 2
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At A Glance

  • Style Name: Stand Alone
  • Auto-Schedule
  • Auto-Away
  • Built-in sensor to detect when no-one home
  • Energy history

In A Few Words

The Nest Learning Thermostat is a programmer, thermostat and frostat all in one.  It learns your schedule and programs itself to turn down the heat when you are away.  It shows how much heat you have used over 10 days and sends a report each month so that you can adjust your usage if required and save both energy and money.  All you need to do is connect the device to your home Wi-Fi to control it from your Smartphone, tablet or laptop.


  • Part Number: T200377
  • Weight: 1 Kg
  • Product Dimensions: 100 x 30 x 100 cm
  • Diameter: 3 cm
  • Height: 3.4 cm
  • Mass: 254 g
  • Battery: 1 Lithium ion battery included
  • Colour: Stainless steel brushed pure grain & glass
  • Style: Stand Alone
  • Bright LD screen: 24-bit colour, 320 pixel display, 4.4 cm diameter
  • Sensors: Temperature, Humidity, Near-Field activity, Far-Field activity, Ambient light
  • Warranty: 2 year limited hardware warranty
  • Wireless: 802.11b/g/n @ 2.4GHz, 802.154 @ 2.4GHz
  • Bandwidth: Less than 50MB/month upload and 10MB/month download (for updates mainly)
  • Power consumption: Less than 1kWh/month
  • Wire Gauge: Supports 1.6mm, 14 AWG
  • Input Power: 100V-240V AC, 50/60Hz
  • Output Power: Provides 12V D to thermostat
  • Relay: Supports 3(1) A load@ 230V AC on both Satisfied & request terminal Ofgem 2013
  • Environmental: Green, RoHs, Arsenic free, Mercury free, PVC free, Recyclable packing

Box Contains

  • 1x Display
  • 1x Base
  • 1x Heat Link
  • 1x Power cord
  • 1x Power plug
  • 1x Optional trim kit
  • 1x Wall screws
  • Installation Guide & Warranty
  • Welcome Guide
  • Nest Certified Installation Card


The Nest Learning device is compatible with most heating systems including:

  • Combi and condensing boilers
  • System and heat only boilers
  • Hydronic underfloor systems
  • Air source and ground source heat pumps (heating only)
  • Zoned systems (one Nest Thermostat per zone)
  • Switched live systems
  • Low-voltage (dry contact) systems

It has auto-schedule which means that it learns from you and programs itself.  The device also senses when there is no-one home and turns down the heat which saves energy and money.  You can control the temperature of your home from your mobile, tablet or laptop and adjust your schedule after checking the 10-day energy history.  You will see the green leaf symbol every time you change the temperature. Nest learns when to turn on the heat when and as you like it.

It is recommended that the thermostat is installed by a professional.

  • Saves money on energy
  • Easy to use & set up with Wi-Fi
  • Fast learner to adapt to your needs
  • Good value for money

Some customers complained that the device needs to be professionally installed which means an extra cost of about £150 but otherwise there have been no complaints.

Our Opinion

The Nest Learning Thermostat does what it is meant to do is efficient and a good buy.  It is well worth the price which you will probably make back on the money you save on electricity bills.




tado° Smart AC Control - intelligent
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At A Glance

  • Colour: White
  • Automatic location-based AC control
  • Control AC from anywhere with tado°& deg. App
  • Saves up to 40% on AC energy costs
  • Control using your voice, Amazon Alexa
  • Compatible with all AC by remote control


In A Few Words

 The tado° 4260328610268 Smart AC control connects your Smartphone to your air conditioner or heat pump transforming it into a Smart device.  It is compatible with all air conditioners by remote control that displays the current settings, e.g. mode, temperature and fan speed.

If your AC also works as a heater, the device can preheat your home on cold days so that it is nice and warm for your return.  Your home will always be at the perfect temperature.  The Smart AC controls the AC via infrared signals and connects to your home Wi-Fi.  It is simple, just plug in, connect to your Wi-Fi, select your AC brand and model and you are set to go.


  • Part Number: 4260328610305
  • Colour: White
  • Weight: 73 g
  • Dimensions: 10 x 1.4 x 10 cm
  • Batteries: Not required

Box Contains

  • 1x tado° Smart AC Control
  • 1x Power adaptor
  • 1x USB cable
  • 1x Adhesive strips


  • Compact & gives more control over your unit
  • Display & touch interface
  • Saves on electricity bills
  • Easy to configure


There have been no customer complaints.


Our opinion

Connection to Wi-Fi is easy and control via the iPhone app is straightforward.  This is a wonderful device which works just as well with the heat as the air conditioning.  It means you come home to a lovely warm house in the winter and a nice cool house in the summer. This is an ideal addition to any home.  We recommend it highly.



tado Smart Radiator Thermostat Starter Kit
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At A Glance

  • Free app for iOS, Android and Windows
  • Geofencing via Smartphone
  • Multi-room control

In A Few Words

This device offers an intelligent heating control with geofencing via Smartphone.  If you have a boiler, gas central heating or underfloor heating it is compatible.  With the tado° Starter Kit you will save on your heating bill.  The Smart Thermostat uses your phone’s location to automatically control heating, thereby cutting out waste.  The unit will pay for itself within the first year.  You can easily install the device yourself.


  • Part Number: 98341
  • Weight: 699 g
  • Dimensions: 7.4 x 16.8 x 16.8 cm
  • Batteries: 3 AAA batteries required
  • Model Number: RU01
  • Colour: White
  • Style: B: Thermostat Starter Kit (v2)
  • Voltage: 220 volts
  • Measurement: kWh

Box Contains

  • 1x tado° Smart Thermostat
  • 1x tado° Bridge including USB cable
  • 1x Power plug
  • 1x Ethernet cable
  • 1x Screwdriver
  • 1x Mounting screws
  • 1x Adhesive pads
  • 1x Cable labels


With tado° Smart Thermostat you can control your heating from anywhere at any time via the app with your Smartphone, tablet or laptop.  The wireless thermostat will cut your energy bill up to 31% with multi-room control and also by using weather forecasts.  There is a free app for iOS, Android & Windows.

Geofencing means that the tado° Smart Thermostat will automatically turn down the heating when no-one is at home and then begins to warm up when it detects the first person home by using your Smartphone’s locations.  It also uses weather forecast integration by adapting the heat according to the forecast to save energy.

Every home is different, so the device uses building characteristics integration to learn over time, how best to heat your home.  The multi-zone control means you can control the heating in multiple rooms separately. This way each member of the family has the heating requirements they prefer.

  • Your home is always the perfect temperature
  • No schedules, no teaching, no need to remember to turn it off
  • Saves money and energy
  • Free app for iOS, Android & Windows
  • Multi-room control



Some customers found the installation a little challenging but if you follow the instructions and online guidance you should have no trouble.

Our Opinion

This product is to be highly recommended, it is wonderful to be able to control the heating all over the house and this device works perfectly.  The price is right, it is easy to control and will save you a lot of money.



SALUS IT500 Internet Controlled
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At A Glance

  • Internet enabled thermostat
  • Compatible with Smartphone or laptop
  • Wireless & easy to install
  • Wall or surface mount
  • Touch screen display

In A Few Words

The Salus IT500 controls your heating and hot water from anywhere via your Smartphone, tablet or laptop.  Your Smartphone, tablet and laptop connect to the system using your Wi-Fi connection.  The device is wireless and easy to install by yourself.


  •  Part Number: IT500
  • Weight: 998 g
  • Dimensions: 20.8 x 17.5 x 10.2 cm
  • Batteries: 2 AA batteries included
  • Colour: White or Black

Box Contains

  • 1x IT500 Roomstat
  • 1x RF receiver
  • 1x internet portal
  • 1x charger
  • 1x ADSL cable


The IT500 is a Smart heating thermostat and boiler control which is compatible with most systems.  It can be used for heating only, hot water and heating or two different heating zones.  You will have full temperature control from anywhere via Apple, Android & Windows devices through the app over Wi-Fi.


There are up to six programmable daily heating profiles and up to three hot water profiles daily.  Automatic frost protection will switch the heating on when temperatures get too low.  Holiday mode and automatic BST/GMT time change ensure maximum energy control.

  • Easy to install
  • Compatible with most systems
  • Six different temperatures
  • Reasonably priced
  • Wireless
  • Efficient

Some customers complained that the display on the controller goes blank after a while but this is to save batteries.

Our Opinion

This IT500 device does everything it is meant to do and is certainly worth the price.  It is very easy to set up with the app once it is installed. 



Honeywell Y87RF2024
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At A Glance

  • Wireless digital thermostat
  • Operates on gas boilers only
  • Operates on 868MHz
  • Remote control via Smartphone, tablet or laptop
  • Can become programmable thermostat (once Rfg100 is installed and app downloaded

In A Few Words

With the Single Zone thermostat, you can control your heating from anywhere.  By linking your thermostat to the Honeywell gateway, you can control your home’s heating for the week ahead via our app.  Since it is wireless, you can place it anywhere and move it around with no re-wiring.


  • Part Number: Y87RF2024
  • Weight: 299 g
  • Dimensions: 8.3 x 3.3 x 8.3 cm
  • Batteries: 2AA batteries included
  • Colour: White or Grey

Box Contains

  • 1x Single Zone Thermostat
  • 1x Relay Box


This device is compatible with a combi gas boiler.  Install the Single Zone thermostat internet control by installing the RFG100 Mobile Access Kit at the same time.  You can use the Total Connect Comfort App to provide a combined time and temperature profile of 6 times daily, variable by day for seven days.

The security feature stops function so that the room will not go above or below a set temperature.  It is simple to use, no programming required and it has on-screen battery status and RF signal check.

  • Energy saving TPI control
  • Can also be used as a temperature sensing device in the evohome zoning system
  • Easy to use



No customer complaints to date on this product. 

Our Opinion

If you have a gas boiler this Smart thermostat makes a lot of sense, this device comes at a reasonable price and will save you money. It is efficient and easy to use.


7. HIVE ACTIVE HEATING & HOT WATER – A Value-for-Money Thermostat

View on Amazon

At a Glance

  • Works with Amazon Alexa
  • Hot Water With Professional Installation
  • No frame
  • Item Weight: 0.458 kg
  • Product Dimensions: 16.4 x 14.6 x 5.8 cm
  • Batteries: 4 AA batteries, Alkaline (included in the package)
  • Battery Cell Type

In a Few Words

Hive’s active heating and hot water allow you to control your heating and hot water at home through your mobile device, your tablet or laptop! Featuring an excellent interface and easy handling, this first-rate heating option must be professionally installed by a gas engineer, regardless of who your energy supplier.

By avoiding heating your house when it is empty, you can save a lot on your heating bills: its handy Heating and Hot water schedules enable you to set up to 6 daily time slots per day to meet your needs and heavy schedule. It also has a Heating and Hot Water Boost: in case you are in a hurry, just boost its operation for up to 6 hours.


Described by the manufacturer as “UK’s favourite wireless thermostat,” Hive Active Heating was meant to combine optimum functionality and discreet design.

The Hive kit is pretty simple: it consists of a wireless thermostat, which allows you to control your heating and hot water system, while a receiver attached to the thermostat enables it to communicate with a hub that plugs into your broadband router for the remote control of your thermostat.

As for the frame, you can pick a Thermostat Stand or the range of coloured frames from the Dulux Feature Wall collection.


The device allows to fully control your heating and hot water wherever you are, even away from home, through an electronic device, like your smartphone or tablet. Thus, depending your schedule, it allows you to save money and energy by changing your heating and hot water settings, in case you have a hot water tank and make sure your house has the ideal temperature as soon as you return home and be able to take a nice relaxing bath, or, if you are planning to be absent for a considerable amount of time, avoiding spending money to heat your walls and furniture!

Note that this model also works with the Amazon Alexa voice control, allowing you to turn your heating up, down or off completely, just speaking to it!


As for installation, it is more like installing a light switch: there is a power connection and a switch connection. Still, it is best to have it installed by a professional. It can be wall mounted in any room by using the mounting plate.

  • Handy interface, easy to control
  • Ideal for energy saving
  • Offering several options in time settings 
  • Some customers have complaint about the batteries’ efficiency. 

Buyer’s Guide

Smart heating devices are becoming more and more sophisticated due to advancing technology.  Smart thermostats enable you to remotely control your home temperature via Smartphone, tablet or laptop.

A Smart heating device allows for more efficiency and gives you control over your home heating while reducing energy use which in turn cuts down on your electricity bill.  It employs the following three components:

The first plugs directly into your boiler and can wirelessly talk to the second component, the in-home device that is the thermostat and main control.

The third component is an app that is downloaded to your Smartphone, tablet or laptop.  You can then remotely control the thermostat/main control device via the app to adjust your heating from wherever you are.

This is just the basics, but the following seven best Smart heating devices listed above can do far more as you will see.  They can ‘learn’ what temperature you prefer when you arrive home.  They can detect when there is no-one at home with built-in sensors and lower the heat to save energy.  They will send you alerts if the home becomes too cold.  They can control the hot water and much more.

Benefits of a Smart Heating Device

If you lead a busy lifestyle, being able to control your home temperature is a huge benefit.  If you are at a meeting and will be late home, there is no need to heat an empty house – you can just program the heat to come on so that it is warm when you arrive.  If you go away for a few days and forget to turn off the heat, this is easily resolved with your Smart heating device.

You save money as well as energy.  You can check your energy history with the app and make necessary adjustments.  Your home is heated more efficiently which is a definite plus.

Below are the six best Smart heating devices on the market in 2018 in our opinion.


We hope this article will be of use to you in choosing the right Smart Heating device for your home.  While there are many to choose from on the market, we feel the above listed are the most reliable and give the very best value for money.