How Much Does Central Heating Installation Cost?

boiler-Installation London
boiler installer London

Our Central Heating Installation Cost Guide

Are you thinking about installing central heating in your home? That is a Smart move! The central heating’s smooth operation is an essential part of keeping your family warm during those chilly winter months. But you’re probably wondering, “How much is this going to cost me?” Well, do not worry, because we got all the details right here.

Let’s make something clear upfront – the price of installing a heating system isn’t a standard, set figure. It varies, taking into account several aspects. Primarily, the factors impacting this cost include the size and age of your London home, its residential or commercial purpose, and the availability of various fuel types. So, let’s start unpacking this information one by one:

Factors That Influence The Central Heating Installation Costs

The Size of the Property

The size of your property plays a big role in determining the cost of installing a full central heating system. Bigger properties usually require more heating power, which means we have to install a larger boiler and in some cases a hot water cylinder. This will potentially higher price tag. Keep that in mind as you plan your budget.

Domestic or Commercial Use

Seeking a new central heating installation for your London commercial building? The details of your property, like the number of floors, pipe accessibility, gas meter and gas supply, can influence the cost of your central heating installation. Businesses might require a robust 60KW boiler. For homes with several bathrooms and levels, we might suggest fitting a system boiler with a cylinder and booster pump.

The Age of Your London Home

Older properties often come with their own set of challenges when it comes to installing new central heating systems. As everyone knows the properties in London are not well-insulated.

When it comes to installing a central heating installation, it’s essential to consider the age of your property. Often, older homes, like many found in London, bring unique challenges. A common issue is that these old properties may not have been built with modern insulation standards in mind, resulting in less energy efficiency.

When a property is poorly insulated, which is often the case with older London homes, it can significantly affect the performance and efficiency of your central heating system. The heat can escape through the walls, roof, or windows, making it harder for your home to stay warm. Consequently, you may need a more powerful boiler, and thus potentially more expensive, or a central heating system installed to compensate for these heat losses.

Moreover, older homes may have outdated or inadequate infrastructure that can complicate the installation process. This can include anything from narrow or obstructed access points to outdated electrical systems or old piping. Such obstacles may require extra work.

But don’t let that get you down. Even though these problems may seem big, they can be solved with the right knowledge and help. By upgrading your home’s insulation, for example, you can stop a lot of heat from escaping and may not need a more expensive heating system.

Environmental Factors

Nowadays, we’re all concerned about the environment, and rightly so. Environmental issues can impact the cost of installation as well. Some new heating system and systems have a lower carbon footprint, but they might come with a higher upfront cost. It’s a trade-off between being eco-friendly and your budget.

Installing a modern gas boiler can reduce the carbon footprint. These boilers are operating more efficiently with lower gas consumption. Also, new gas boilers are hydrogen meaning if the government changes the gas to hydrogen you still can use your existing system boiler.

Your Budget

How much are you willing to invest in your new central heating system installation? Keep in mind that the cost of new central heating system installation goes beyond just buying the boiler and the flue. It includes labour, potential plumbing changes, gas pipe upgrades, magnetic flue, system protection and so on.

The Boiler Breakdown Cost to install central heating

Now, let’s talk about the heart of your central heating system—the boiler. The type of boiler you choose can affect the overall installation costs. Here are the different options and what you need to know about each:

Regular Boiler Costs

Prices can carry from £1,550 to £3,150. A Vaillant boiler can cost more than a Main.

A standard boiler installation consists of a central heating system a boiler unit, a circulating pump, a hot water cylinder, and an F & E tank in the loft. This installed central heating system is great for larger properties because it can handle the heating demands of more than one radiator. However, keep in mind that it takes up more space and can be a bit more expensive compared to other options.

Advantages of Regular Boiler:

  1. Suitable for Larger Homes: Regular boilers are ideal for homes with multiple bathrooms as they can provide a lot of hot water simultaneously.
  2. Compatibility: They can work with older central heating systems and are compatible with solar water heating systems for environmentally conscious users.
  3. Efficiency: Modern boilers have improved energy efficiency, which can reduce your gas bills and carbon footprint.
  4. Hot Water Supply: They utilize a cylinder to store hot water, meaning there’s usually a good supply readily available.

System Boiler cost

Prices can carry from £1,650 to £2,850

System boilers work much like regular boilers, but they don’t require a tank in the attic. These boilers have distinct containers to hold hot and cold water and are sometimes known as closed-vent or sealed systems. What’s great about these boilers is that they don’t take up much room, so they’re great for properties with limited space. A bonus is that the hot water storage cylinder can be supplied power by solar panels if you choose a solar unvented cylinder, which is a wonderful green energy option.

Remember, it could take a little more time for your boiler to heat your hot water tank. The tank’s size also affects how much hot water you can use. So, if your home is big and has many bathrooms, you might need two hot water tanks, each holding 300 litres, and a bigger boiler.

System boilers come with numerous advantages. Here are some of their key benefits:

1. Fast and Efficient: Directly heat your central heating system while also producing hot water for your hot water cylinder. This makes them very efficient and able to both heat only the boiler and deliver hot water quickly.

2. High Performance: you can use hot water from several taps simultaneously without a pressure drop, making them perfect for homes with multiple bathrooms.

3. Space-saving: this boiler has many of its major components built-in, which not only makes the unit more compact but also simplifies installation. This means they don’t require a separate cold-water tank in the loft underfloor installing central heating throughout, freeing up space.

4. Compatible with Solar Thermal Systems: the boiler is compatible with solar thermal systems, offering an environmentally friendly way to heat water while saving energy costs.

5. Less Risk of Pressure Loss: As these systems are sealed, there’s less risk of pressure loss which means a more consistent delivery of hot water.

6. Reduced Maintenance: the boiler is less likely to develop issues due to frozen pipes during the colder months, and overall they require less maintenance.

7. Quiet Operation: As most of the components of oil boilers are housed within the boiler, they generally operate more quietly than other systems.

As with any heating system, it’s important to assess your specific needs and circumstances before deciding if a system boiler is the best solution for your home or property.

Combi Boiler cost:

Prices can carry from £1,450 to £2,560

The Combi boiler brand is a popular choice for many households. Combi boilers are known for their efficiency as they heat water directly from the main supply, eliminating the need for a hot water tank. This means you get instant hot water when you open any tap, which is pretty convenient, right?

Combi boilers are ideal for smaller properties with one to two bathrooms, and they don’t take up much space. However, for larger houses with several bathrooms, a combi boiler might not be the most cost-effective or suitable solution. For multiple bathrooms, you might want to choose a 40KW gas boiler or larger.

Keep in mind that a good mains cold water pressure is mandatory for a combi boiler to work efficiently.

1. Space Saving: Combi boilers are compact and don’t require a separate tank or cylinder for hot water storage, making them ideal for homes where space storage heaters are at a premium.

2. Cost-effective: They are generally cheaper to install than systems or conventional boilers, as the installation process is less complicated and takes less time.

3. Energy Efficient: Combi boilers only heat water as and when you need it, which can result in significant energy savings. This can contribute to lower energy bills and a reduced carbon footprint.

4. Instant Hot Water: They provide hot water on demand directly from the mains, meaning you don’t have to wait for the water to heat up.

5. Good Water Pressure: As long as your mains water pressure is high, you’ll enjoy a good flow of water to your shower and other outlets without needing a separate pump.

6. Less Risk of Loft Freezing: Since there’s no need for a tank in the loft, there’s less risk of pipes freezing during cold weather.

It’s important to remember that while combi boilers come with many benefits, they may not be the best fit for larger homes or properties with multiple bathrooms, where hot water needs might be higher. Always consider the specific needs of your property when choosing a boiler.

Does Fuel Type Affect Boiler Installation Costs?

Yes, indeed! The type of fuel your boiler uses can impact the overall cost of installing a boiler. Let’s look at a few fuel options:

Cost of Natural Gas Central Heating

Natural gas is the main fuel source for most homes in the UK. It’s handy and flexible, and a gas company can supply it directly to your house. However, due to environmental factors, the installation costs for natural gas systems might be higher. It’s important to consider the advantages and disadvantages of natural gas.


It is a green and affordable choice as it doesn’t involve burning oil or gas. Electric boilers are usually easy to install and keep up. But remember, heating your house with electricity could need a lot of power. The upfront cost of installing a central part for an electric boiler system may be higher due to its intricacy, but it could save you money over time. The price of a boiler can reach up to £1,950.

Absolutely! The type of fuel your boiler runs on can influence the overall boiler replacement cost. Here are a few fuel types to consider:

Natural Gas Central Heating Costs

Natural gas is the primary fuel used in the majority of British homes. It’s convenient, versatile, and can be provided directly to your home via a gas provider. However, due to environmental concerns, installation prices for natural gas systems may be higher. It’s essential to weigh the pros and cons when considering natural gas as your fuel choice.


Electricity is a sustainable and cost-effective option since it doesn’t require burning oil or gas. Electric boilers are relatively easy to install and maintain. However, keep in mind that heating your home with electricity may require a significant amount of power. The initial cost of purchasing an electric heating or boiler unit might be higher due to its complexity, but it can pay off in the long run. An electric boiler can cost up to £1,950.

Solid Fuels

Cheaper Heating Options Can Pollute More: Coal, firewood, and wood pellets cost less but can cause pollution. 

Green Energy Choices: Renewable energy, such as solar and wind, are gaining popularity as cleaner options. 

Cost Considerations: Renewable energy might be expensive to set up, but it could reduce your energy bills over time. 

Fossil Fuels in London: In London, we don’t often find boilers using solid fossil fuel fuels like coal.


Oil-fueled heating systems are more energy efficient compared to electricity. They are comparable to gas in terms of installation costs. If you own a larger property and require a substantial amount of heat. The new boiler cost might be worth considering. However, keep in mind that the installation of an oil tank can be an additional cost.

Now, let’s explore some other factors that can impact the overall installation and running costs of your central heating system.

Boiler Size

One important thing to think about is the size of your boiler. It tells you how much heat you need to keep your home warm. For example, gas combi stoves might not be able to make enough hot water for bigger homes. When picking a boiler, think about the size of your home and how much heat you need.


How much your central heating installation costs will depend on the amount and style of radiators you choose. Most designer radiators cost between £130 and £1100, while regular radiators for central heating can cost between £50 and £140. Also, if you need more than one radiator to heat a big room well, this could add to the overall cost. If you use a smaller number of radiators though, keep in mind that it may take longer for the room to hit the temperature you want.

Pipe installation

Whether or not you need a full boiler replacement will affect how much piping will cost. In recent years, the prices of materials in London have gone up. When installing a new system in an older home, it is often best to replace the current pipes. But a chemical flush or power flush can be less expensive than replacing all of your pipes, and they can keep your new boiler and radiators working well.

Hot Water Tank

You might need a hot water tank if you choose a system or a standard boiler. It’s usually cheaper to replace an existing tank rather than set up a new system. However, putting in a new tank initially involves plumbing work, leading to more installation costs. There are two types of tanks: vented and unvented hot water cylinders, each with its benefits and factors to consider.

Vented Tanks:

Price: Vented tanks are typically less expensive to buy and set up than unvented ones.

Upkeep: They’re simpler and cheaper to look after, as they’re less complicated than unvented tanks.

Reliability: They’re known to be dependable because they use gravity for water pressure, leading to fewer technical issues.

Safety: These tanks are generally safer as they have fewer pressurized parts, and the open vent allows an easy escape route for extra heat or pressure.

Unvented Tanks:

Steady High Pressure: Unvented tanks supply hot water at the pressure of your mains, which can boost your shower and bath performance.

No Need for Cold Water Tank: These systems don’t require a separate cold water tank, saving you space and reducing worries about leaks or frost damage.

Efficiency: They heat up and recover faster than vented tanks, so you’ll have hot water sooner and it will refill more quickly after use.

Placement Options: These tanks can be set up almost anywhere in your home, as they don’t depend on gravity for pressure.

Water Quality: The water comes straight from the mains, reducing the risk of contamination.

Smart Thermostat

Once your boiler, radiators, and pipes are all set up, you’ll need to add heating controls, such as a smart thermostat. Some modern thermostats even let you set the temperature from your phone. The cost to buy and install a thermostat goes up the more advanced it is. Most smart heaters cost anywhere between £130 and £225. You can also put in smart thermostatic radiator valves that make it easier to control the heating system.

Now that we’ve covered the main factors influencing installation costs, you might still have some burning questions. Let’s address a few frequently asked questions to clear things up.

Expert Engineers

Get central heating installation quotes

Use our online calculator to get a fixed price for installing a new boiler.

Frequently asked questions

You can feel safe putting in your central heating.

Get in touch

So, there you have it: a full guide to how much it costs to put in a central heating system. Remember that the total cost of a central heating system depends much on things like the size of the property, the type of fuel used, and any special needs. By carefully thinking about these things and working with a gas engineer, you can install a central heating system that meets your needs and keeps you warm and cosy.

MML Plumbing is the place to go if you want to look at your choices and find the best central heating system for your home. We offer installation services done by our heating engineers who are registered with Gas Safe. This makes sure that your central heating system is safe and works well.

To make things even easier, you can use our online tool, which is easy to use. In just 30 seconds, you can answer a few simple questions about your home and heating needs, and our platform will give you a list of boiler names and models that are perfect for you. It’s quick, easy, and takes the guessing out of finding the right boiler.

Leave a Comment

Your email address will not be published. Required fields are marked *

error: Content is protected !!
Scroll to Top
× How can I help you?