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Smart thermostats have become one of the most popular home heating upgrades in recent years.

They give you greater control over your heating, can help reduce wasted energy and allow you to adjust temperatures remotely from your phone.

Whether you're considering a Hive, Tado, Nest or another smart thermostat brand, this guide explains the typical cost of smart thermostats in the UK, installation costs and what can affect the final price.

How much does a smart thermostat cost in the UK?

The average cost of a smart thermostat unit ranges from £119–£219, depending on the brand, model and features included.

You'll also need to factor in installation costs, which typically range from £30–£80 (based on 1–2 hours labour).

The thermostat itself usually represents the largest part of the overall cost.

Installation is often relatively straightforward, particularly when replacing an existing thermostat with a compatible smart model.

Get a quote for smart thermostat installation near you

Smart thermostat installation is normally a fairly small job, but costs can still vary depending on the complexity of the installation and labour rates in your area.

Some tradespeople will simply install a thermostat you've bought yourself, while others may be able to supply the unit as part of the job — always check so you know what you're paying for.

Comparing a couple of quotes from local installers can help you understand exactly what's included and ensure you're getting a fair price.

Find checked smart thermostat installers working in your area and request a quote.

What is a smart thermostat and how does it work?

A smart thermostat is a device that connects your heating system to the internet, allowing you to control your home's temperature remotely using a smartphone, tablet or computer.

Unlike traditional thermostats, smart thermostats include features such as:

• Remote heating control

• Heating schedules

• Holiday mode

• Energy usage insights

• Smart home integration

• Learning your heating habits

• Multi-room temperature control

Many models can help you use less energy by automatically adjusting heating schedules around your daily routine.

Smart thermostat costs at a glance

• Smart thermostat unit: £119–£219

• Smart thermostat installation: £30–£80 (based on 1–2 hours of labour)

• Supply and fit: £174–£274

• Installation time: usually 1–2 hours

• Most popular brands: Hive, Tado, Google Nest, Drayton Wiser, Worcester Bosch Wave, Honeywell Home and EcoBee

Smart thermostat costs by brand

The prices below are intended as a guide only.

Smart thermostat costs can vary depending on the model you choose, the retailer, seasonal promotions and any manufacturer discounts available at the time of purchase.

Cost of installing a Hive smart thermostat

• Average cost of Hive smart thermostat unit: £119

• Average installation cost: £55

• Average total cost to supply and install a Hive smart thermostat: £174

Hive remains one of the most popular smart thermostat systems in the UK. Features include multi-zone control, hot water scheduling, temperature alerts and holiday mode.

If you're specifically considering Hive, take a look at our dedicated Hive smart thermostat installation cost guide for a more detailed breakdown.

Cost of installing a Tado smart thermostat

• Average cost of Tado smart thermostat unit: £160

• Average installation cost: £55

• Average total cost to supply and install a Tado smart thermostat: £215

Tado is often praised for its energy-saving features, weather adaptation and user-friendly app.

If you're considering Tado, take a look at our dedicated Tado smart thermostat installation cost guide for more detailed pricing information.

Google Nest smart thermostat cost

• Average cost of Nest smart thermostat unit: £199–£219

• Average installation cost: £55

• Average total cost to supply and install a Nest smart thermostat: £254–£274

Google Nest thermostats are among the most expensive options but offer advanced features, including learning your heating habits and automatically adjusting schedules to improve efficiency.

Worcester Bosch Wave smart thermostat cost

A Worcester Bosch Wave thermostat costs around £170 for the unit, with supply and installation typically coming in at around £225. It integrates particularly well with compatible Worcester Bosch boilers.

Drayton Wiser smart thermostat cost

Drayton Wiser has become increasingly popular with UK homeowners, particularly those interested in smart radiator valves and multi-room heating control. Expect to pay around £195 for a Drayton Wiser smart thermostat, with supply and installation total cost sitting at around £250.

Honeywell Home and EcoBee smart thermostat costs

Honeywell Home and EcoBee offer a range of smart thermostat models at different price points and feature levels, making them popular alternatives to some of the better-known brands.

A Honeywell Home smart thermostat unit typically costs around £159, taking the total cost of supply and installation to around £214.

EcoBee tends to cost in the region of £141 for the smart thermostat unit, and around £196 for supply and install as a total cost.

How long does it take to install a smart thermostat?

In most cases, installing a smart thermostat takes between 1–2 hours.

A simple replacement on a compatible heating system may take less than an hour. More complex installations involving additional wiring, hubs or compatibility checks can take longer.

What affects the cost of a smart thermostat?

Smart thermostat installation is generally straightforward, but there are still a few factors that can influence the overall price.

• Brand and model: Some thermostats offer more advanced features than others, which affects the purchase price

• Installation requirements: A straightforward replacement is usually cheaper than a first-time installation that requires additional wiring

• Smart home integration: Features such as voice control, sensors and smart home compatibility can increase costs

• Additional devices: Adding extra thermostats, hubs or smart radiator valves will increase the overall cost

• Location: Labour rates vary across the UK and are typically higher in London and the South East

On Checkatrade, you'll only find trades who meet our high standards and pass up to 12 checks.

Additional costs to budget for

The thermostat itself is usually the biggest cost, but depending on your heating setup and requirements, there can be a few extras worth budgeting for.

For example:

• Smart radiator valves

• Additional thermostat units

• Smart home hubs

• Extra wiring work

• Upgrading existing controls

• Additional sensors

What's included in a smart thermostat installation quote?

Installation quotes will vary, but they should clearly explain what's included.

Typically, a quote may include:

• Installation labour

• Removal of the existing thermostat

• Wiring and connection

• Initial setup and testing

• Demonstration of basic controls

Potential exclusions may include:

• Supply of the thermostat

• Additional wiring work

• Smart radiator valves

• Smart home hubs

• Compatibility upgrades

Do smart thermostats work with a combi boiler?

Most modern smart thermostats are compatible with combi boilers, but compatibility can vary depending on your boiler make, model and age.

Before purchasing a thermostat, it's worth checking compatibility with both the manufacturer and your installer.

It's also a good opportunity to think about related heating improvements such as getting your boiler serviced, insulating your loft or upgrading to cavity wall insulation, all of which can help improve energy efficiency.

Smart thermostat vs smart meter

Many people confuse smart thermostats and smart meters, but they're designed to do different jobs.

• A smart thermostat controls your heating and hot water

• A smart meter automatically sends energy readings to your supplier and helps you monitor energy usage

Smart meters are normally supplied and installed free of charge by your energy provider.

Are smart thermostats worth it?

If you've ever forgotten to turn the heating down before leaving the house, or found yourself heating empty rooms, a smart thermostat can feel like a really useful upgrade.

Smart thermostats offer greater control over when and how your heating operates, helping to reduce unnecessary energy use.

Benefits of a smart thermostat can include:

• More convenient heating control

• Better visibility of energy use

• Reduced energy wastage

• Remote access through an app

• Holiday and away modes

• Smart scheduling

The amount you save will vary from home to home, but many people find the additional convenience worthwhile even before any energy savings are considered.

How smart thermostats can help reduce energy bills

Smart thermostats help you use energy more efficiently rather than heating your home unnecessarily.

Features that can contribute to lower energy use include:

• Heating schedules

• Holiday mode

• Remote control

• Room-by-room temperature management

• Learning routines and habits

• Occupancy detection

Combined with good insulation and a well-maintained heating system, these features can help reduce wasted energy.

Smart thermostat cost calculator

A simple way to estimate your total cost is:

Smart thermostat unit + Installation cost + Optional extras* = Total project cost

*Optional extras might include items such as smart radiator valves or additional thermostats, which will add to your overall budget.

Alternatively, use our calculator below to generate a rough idea of what your smart thermostat might cost to install before requesting quotes.

Job Estimate Calculator

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This calculator provides a guide price only, not a quote. For a clearer idea of what you’ll actually pay, search for smart thermostat installers in your area and get in touch for a quote.

Should you install a smart thermostat yourself or hire a tradesperson?

Some smart thermostats are designed with DIY installation in mind.

However, many systems still require wiring work and compatibility checks with your existing boiler and heating controls.

DIY installation may be suitable if:

• The manufacturer explicitly supports DIY fitting

• You're confident working with electrical systems

• The heating system is compatible

Hiring a professional is usually worthwhile if:

• You're replacing an older thermostat

• Additional wiring is required

• You're unsure about boiler compatibility

• You want peace of mind the system has been installed correctly

Given that installation tends to cost between £30–£80, many homeowners decide professional installation is money well spent.

Tips for keeping smart thermostat costs down

If you're trying to keep costs under control, consider:

• Comparing several thermostat brands

• Checking for seasonal promotions

• Confirming compatibility before purchasing

• Combining installation with other heating work

• Comparing a selection of quotes from local installers

Smart thermostat cost checklist

• Check compatibility with your boiler

• Decide whether you need basic heating control or advanced features such as multi-room zoning

• Compare several smart thermostat brands and models

• Factor installation costs into your overall budget

• Check whether smart radiator valves or additional accessories are required

• Look for seasonal discounts or manufacturer promotions

• Read customer reviews before purchasing

• Compare quotes from several local installers if you're not fitting it yourself

• Confirm what's included in any installation quote

• Check warranty and support options before buying

When should you install a smart thermostat?

If your current thermostat offers limited control or you're looking for ways to manage your heating more efficiently, a smart thermostat could be worth considering.

They can be particularly useful if:

• You're often away from home

• Your heating bills are increasing

• You want more control over heating schedules

• You're upgrading your boiler

• You're investing in wider energy-efficiency improvements

Every Checkatrade job is backed by our £1,000 guarantee

Up to £1000. Eligibility criteria and T&C’s apply.

Find a checked smart thermostat installer near you

The right thermostat is only part of the equation.

A qualified installer can make sure the system is compatible with your heating setup, installed correctly and configured properly from day one, saving you time and frustration.

Search for smart thermostat installers covering your area and get in touch for a quote.

FAQs

Are smart thermostats actually worth it?

Many homeowners find smart thermostats worthwhile because they offer greater control over your home heating, convenience and the potential to reduce energy waste.

Can you just replace a thermostat with a smart thermostat?

In many cases, yes. A smart thermostat can often replace an existing thermostat, although compatibility should always be checked first.

Can I install a smart thermostat myself?

Some models are designed for DIY installation. However, professional installation is often recommended where wiring or boiler compatibility is involved.

How long does it take to install a smart thermostat?

Most installations take between 1–2 hours, depending on the complexity of the setup.

Do smart thermostats work with a combi boiler?

Many smart thermostats work with a combi boiler, but compatibility varies by boiler make, model and age. Always check the manufacturer specifications before you buy.

What's the best smart thermostat in the UK?

The best smart thermostat depends on your budget and heating system. Hive, Google Nest, Tado and Drayton Wiser are among the most popular choices for UK homeowners.

Do smart thermostats work with older boilers?

Many smart thermostats can work with older boilers, but compatibility varies. It's worth checking with the thermostat manufacturer or a qualified installer before purchasing.

Do I need an electrician or heating engineer to install a smart thermostat?

It depends on the thermostat and your heating system. Some installations are carried out by electricians, while others are completed by heating engineers. If the thermostat is being connected to your boiler controls, many homeowners choose a qualified heating engineer familiar with their heating system.

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