Thermostat Replacement Costs: A Guide

A Guide to Thermostat Replacement Costs

From simple radiator thermostat replacements to smart upgrades, a new thermostat can make your home more comfortable and cheaper to heat. This guide covers your options, the costs involved and how much energy you could save.

In this cost guide we will talk about:

1. How do I know if my thermostat needs replacing?
2. Thermostat replacement average cost
3. Professional thermostat installation cost
4. Types of thermostats and their costs
5. Beware of these hidden thermostat replacement costs
6. Will a new thermostat save energy?
7. Find thermostat replacement services near you on MyBuilder
8. FAQ: Common questions about thermostat replacement costs

How Do I Know If My Thermostat Needs Replacing?

Knowing when to replace your thermostat is key to keeping your home comfortable and your energy bills in check. Your thermostat controls your heating system, helping it run efficiently and effectively.

You may need to replace your thermostat if you notice any of the following signs:

• The thermostat screen is blank, unresponsive, or fails to turn on even after changing batteries or resetting it, indicating possible electrical or internal damage.
• It shows inaccurate temperature readings that don’t match the room’s actual temperature despite recalibration.
• Your heating doesn’t respond properly, such as failing to turn on or off or cycling frequently, which wastes energy and stresses the system.
• Your energy bills spike unexpectedly, often due to incorrect thermostat signals causing your heating to overrun.
• The thermostat is old, generally over 10 years, and lacks modern features like programmability or smart control.
• It frequently loses programmed settings or responds slowly to changes.

If you experience these issues, it’s wise to consult a professional near you to assess whether your thermostat should be repaired or replaced.

It’s easy to post your job for free on MyBuilder today and get in touch with heating engineers near you, who can give you advice and offer their services.

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Thermostat Replacement Average Cost

In the UK, replacing a thermostat typically costs between £100 and £300 supplied and fitted, depending on the type of thermostat, labour requirements, and any additional services you need.

Choosing the right thermostat is essential, as it affects both the material costs and the long-term functionality of your heating system.

Take a look at these average thermostat replacement costs:

Thermostat type	Supplied and fitted
Manual or programmable thermostat	£100–£200
Smart thermostat (e.g. Nest, Hive)	£150–£300

Prices are usually higher in London and the South East.

Professional Thermostat Installation Cost

When replacing a thermostat, it’s important to plan for the costs involved and make sure you hire a qualified professional.

Professional installation is crucial to guarantee your thermostat works correctly and efficiently, avoiding future issues and ensuring safety.

Here’s a clear breakdown of typical thermostat replacement costs:

• Basic thermostat replacement: This straightforward task is typically done by a qualified heating engineer or electrician. Expect costs from £100 to £200, covering both the unit and professional labour, depending on installation complexity and location.
• Smart thermostat installation: Installing smart thermostats like Nest or Hive requires expertise, especially for integration with home automation systems. Heating engineers or electricians usually charge between £150 and £300 including the unit, with installation labour typically a fixed fee of around £60 to £150. This ensures the system is correctly configured and connected.
• Boiler thermostat replacement: A more specialised job, this is best handled by a heating engineer. The cost depends on your boiler system and the complexity of the job, so ask for a quote to make sure the thermostat is safely and properly installed.
• Radiator thermostat change: Usually done by a plumber or heating engineer, replacing thermostatic radiator valves (TRVs) is a cost-effective improvement, typically priced at around £50 to £70 per manual valve, including labour. We have a full guide on fitting radiator thermostat costs.

If you’re not sure what service you need, just post your job on MyBuilder. Take a couple of minutes to describe any problems you’re facing, and even add some images to your post to help explain, then heating engineers near you will be able to help.

Types of Thermostats and Their Costs

When it comes to thermostat costs, there are a few different options you can choose. Here’s a simple breakdown of the main types of thermostats to help you choose what fits your home and budget. The prices below are for the unit only, so fitting costs are extra.

• Manual thermostats: The most basic and affordable option, where you adjust the temperature by hand. The unit costs around £20 to £50, and they’re great if you want something simple without extra features.
• Programmable thermostats: These let you set heating schedules for different times and days, helping save energy when you’re not home. The unit usually costs between £40 and £100 and offers a good balance of control and value.
• Smart thermostats: These are the most advanced, with features like smartphone control, energy tracking, and learning your routines. The unit costs more, typically £100 to £300, but can save you money over time and add convenience.
• Radiator thermostats (TRVs): Small valves on radiators that let you control the temperature in each room separately. Fitted manual valves cost around £50 to £70 each, and smart radiator thermostats around £150 to £250 each, including installation. They help you heat only the rooms you use.
• Boiler thermostats: These work with whole-house central heating systems to control your boiler’s temperature. They’re more specialised and usually need professional installation, so ask for a quote.

Beware of These Hidden Thermostat Replacement Costs

When it comes to replacing your thermostat, there’s more to think about than just the price of the unit itself. A few extra factors can affect the total cost, so knowing about them upfront helps you plan your budget better and avoid surprises.

Beware of these hidden costs that could come up:

• Labour costs: Heating engineers typically charge £45 to £80 per hour, though many price a thermostat job as a fixed fee of around £60 to £150. This varies with the tradesperson’s location, experience, and the complexity of the job.
• Maintenance and repairs: If additional issues are identified during the visit, such as system balancing or repairing related components, this can add £50 to £150 to the total cost.
• Call-out fees: Some heating professionals charge a flat call-out fee, typically £50 to £100, to cover inspection and travel.

We also have a full guide on heating engineer costs if you want to know more about how to find the right professional for you.

Will a New Thermostat Save Energy?

Time for a thermostat replacement? Upgrading your thermostat brings several benefits that go beyond controlling temperature more efficiently:

• Energy savings: Smart thermostats like Hive and Nest let you schedule your heating precisely, and some learn your routine and adjust automatically. This reduces unnecessary energy use and can cut your heating bills by around 10%, depending on your home and how you use your heating. Find out more about Hive costs in this guide.
• Improved comfort: New thermostats provide more precise temperature control, ensuring your home stays consistently cosy without sudden fluctuations. Some smart thermostats even learn your preferences and adjust accordingly.
• Convenience: Smart thermostats let you control your heating remotely via smartphone apps. You can adjust settings from anywhere, schedule heating times, and receive alerts for maintenance.
• Cost savings over time: Although smart thermostats have higher upfront costs, the energy savings and convenience features usually pay back within a few years, with ongoing savings after that.

Find Heating Professionals on MyBuilder

At MyBuilder, you can easily connect with heating engineers near you who are ready to take on your thermostat replacement. It only takes a few minutes to post your job for free today, and then get in contact with professionals who have already been ID checked and verified. Skip the hassle and hire with MyBuilder.

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FAQ: Common Questions About Thermostat Replacements

Can I replace my thermostat myself?

Like-for-like swaps of simple battery-powered thermostats can be DIY. However, many thermostats connect to mains-powered heating controls, and smart thermostats or complex systems often need professional installation to ensure safety and proper functionality. If you’re not confident working with wiring, hire a qualified professional.

How long does it take to replace a thermostat?

A standard thermostat replacement takes around 1 to 2 hours, including removing the old unit and installing the new one. Smart thermostats usually take 1 to 2 hours too, but Wi-Fi setup, a new receiver or extra wiring can make the job longer. The complexity of the wiring and testing of the system can also affect the duration.

Is it worth upgrading to a smart thermostat?

Often, yes. A smart thermostat gives you remote control, precise scheduling and energy monitoring, which can lead to lower bills, although the savings depend on your home and how you use your heating.

Do I need to replace my thermostat if my heating system is upgraded?

Not always, as many modern heating systems are compatible with existing thermostats. However, upgrading to a newer thermostat, particularly a programmable or smart one, can improve the system’s efficiency and functionality.

How often should a thermostat be replaced?

Thermostats typically last 10–15 years, but older or malfunctioning models may need replacement sooner. Upgrading to a modern thermostat can enhance performance, increase energy efficiency, and provide access to new features like remote control.