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Last updated: 5 February 2025

New Boiler Installation & Replacement in Millwall

  • By replacing an old boiler with a new, highly efficient one, you can save up to £640 on your yearly heating bills.
  • The costs of a new boiler installation typically range from £1,100 to £5,000, depending on the kind of boiler you choose.
  • The costs of a boiler replacement vary depending on the kind of swap you opt for. For a like-for-like combi boiler replacement, you can expect to pay about £1,500 - £4,500. It costs around £1,100 - £5,000 to replace a combi boiler with a system or a conventional boiler.

As the cost of living crisis looms over everyone, paying off energy bills is becoming increasingly frustrating. That’s why it might be time to upgrade your central heating system. A boiler installation costs anywhere between £1,100 and £5,000. While installing a new efficient boiler can be quite the investment, in the long run, you can expect to save up to £640 on your annual heating bills. Identifying the best boilers in the UK and finding the one that meets all your requirements can be tricky. It’s a process that involves a multitude of factors that can't be determined without the proper guidance. This underscores the importance of having a skilled heating expert in Millwall who can evaluate your home.

All you have to do is fill out a quick and easy 30-second form and we’ll supply you with up to 3 free, non-binding quotes from the professionals who can provide the best boiler installation in Millwall. Click the button below to get started.

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How much does a boiler cost in Millwall?

How much is a new boiler?
Type of boiler Cost excluding installation Cost including installation Average, inc. installation
Combi £500 – £3,000 £1,500 – £4,500 £3,000
System £580 – £3,500 £1,580 – £5,000 £3,290
Conventional £600 – £3,500 £1,100 – £5,000 £3,050
Electric £590 – £2,500 £1,590 – £4,000 £2,795
Biomass £4,000 – £12,000 £6,000 – £21,000 £13,500

The main types of boilers are combi (including gas combis and electric combis), system, and conventional boilers. The boiler replacement cost can vary in terms of efficiency, the parts they use, and the different fuel types they run on. 

Combi boilers are currently the most popular home heating system in Millwall. The most efficient boiler models reach efficiency rates of up to 98%, meaning that they will warm up your home without wasting too much fuel in the process. If you’re looking to install a combi boiler, make sure to choose one of the best combi boiler options on the market. 

It’s also important to note that the exact cost of getting a new boiler can vary depending on the complexity of the installation and whether you require additional parts. At the same time, any gas boiler installation in Millwall will cost more as it will require a connection to the gas main.

Combi boiler installation in Millwall

Combi boilers are the most energy-efficient type of boiler. These boilers supply hot water on demand and are ideal for single-bathroom houses with lower hot water consumption. Combi boiler installations in Millwall are generally electric and gas, although newer fully electric models are getting popular. A combi boiler installation in Millwall is ideal for smaller households with a single bathroom. While they are highly efficient, combi boilers cannot attend to high energy needs. That is why system or conventional boilers are more suitable for large homes.

System boiler installation in Millwall

A system boiler requires both a boiler unit and a hot water storage tank to operate. Because of this additional component, system boilers can supply water to radiators and multiple taps at the same time. So, for households in Millwall with high hot water demands, a system boiler installation is a great solution. Compared to a combi boiler, system boilers are somewhat less efficient. However, depending on the kind of fuel it runs on, it can still bring long-term savings on your energy bills.

Conventional boiler installation in Millwall

Conventional boilers consist of a boiler unit, an open-vented hot water cylinder (usually located in the loft), and an expansion tank. The system operates by heating water in the boiler and then storing it in the hot water cylinder. Installing a new conventional boiler in Millwall can be fairly easy if you’re replacing an old conventional boiler with a new one. However, if you’re looking to swap a system or combi boiler for a conventional one, be prepared for a lengthier and more complex installation process. This is because the pipework in your home will need to be adjusted and the hot water cylinder and storage tank will need to be fitted.

Electric boiler installation in Millwall

Electric boilers use electricity, rather than combustible fuel such as oil or gas, to generate heating and hot water for your home. To operate, they have to be connected to the mains electricity supply, as well as to the mains water supply. One of the primary advantages of an electric boiler is that they are highly efficient. Boasting efficiency rates of up to 99-100%, electric boilers waste very little fuel to warm up your home. However, electricity prices in Millwall are currently higher than the cost of gas, so you’ll want to check how much you can save with an electric boiler if you’re considering having one installed.

Biomass boiler installation in Millwall

If you’re concerned about your carbon footprint, it’s worth giving some serious thought to biomass boilers. These run on renewable fuel such as logs, pellets, or wood chips to efficiently heat up your home and supply your taps with hot water. While biomass boilers have several impressive advantages, it’s important to note that they are more expensive than any of the other boiler types. At the same time, they take up a lot of space in your home, as the boiler unit is quite large and the fuel needs to be stored in a dry indoor space.

How much is a new boiler replacement in Millwall?

The cost of a new boiler replacement ranges anywhere from £1,100 to £5,000. Whether your boiler replacement will be at the lower or higher end of this price range depends on the boiler you choose and the kind of boiler swap you need.

Replacing an old combi boiler with a new one costs around £1,500 - £4,500. Switching a combi with a system boiler is a bit more expensive, costing about £1,580 - £5,000. Finally, replacing a combi with a conventional boiler will cost you somewhere between £1,100 - £5,000. Be sure to keep these estimates in mind when deciding on your new boiler replacement.

However, since the cost of boiler installation depends on numerous factors, you will have to consult multiple Gas Safe registered engineers. This can be a laborious process, taking days of research to find a trustworthy installer with the right price for you. Luckily, we can speed up the process using our service.

All you have to do is fill out a 30-second form and we’ll do the rest by reaching out to thoroughly vetted installers in Millwall. We will then connect you with them, so that you can find the cheap boiler replacement that meets all your requirements. Click the button below to get started and you’ll receive up to 3 free, non-binding boiler quotes.

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What size boiler do I need in Millwall?

Numerous factors can determine the right boiler size for your home:

  • Number of bedrooms
  • Number of radiators
  • Number of bathrooms
  • The insulation in your home
  • Building regulations (if applicable)
The right boiler size for your home
BedroomsRadiatorsBathroomsBoiler size
1-20 to 10118 to 27kW
3-410 to 152 to 328 to 34kW
5 or more15 to 204 or more35 to 43kW

Of course, these numbers apply to the UK in general, so pinning down the exact boiler size for every Millwall household can be difficult. As a rule of thumb, combi boilers are less useful for households with multiple bathrooms, as they produce hot water on demand and this stretches their abilities thin when several taps are operating at the same time.

For higher water flow rates at the expense of a bit of energy efficiency, both system and conventional boilers can do the trick. However, both of these require extra space for additional components like a hot water cylinder and a water storage tank. While they are more adept at providing water for homes with more elaborate needs, they could be less suitable for smaller homes with less space.

If costs are your main concern, the good news is that there are certain grants that can help you upgrade your home heating system. The Boiler Upgrade Scheme (BUS) has been open since 23rd May 2022 and will run until 2028. Potentially, applicants can receive a grant of up to £5,000 to install a biomass boiler.

Boiler replacement vs repair in Millwall?

It’s hard to decide when you should replace your old boiler or opt for boiler servicing. Even the strictest regiment of boiler maintenance can’t hold the inevitable at bay. As a general rule, here are a few signs you need to ditch your current heating system:

  • Your boiler installation dates back over a decade.
  • Reduced efficiency has led to increased energy bills.
  • Unusual noises are coming from your boiler or heating system.
  • Errors pop up frequently.
  • It’s getting difficult to find replacement components.
  • Your home is more susceptible to the cold.
When these crucial indicators present themselves, it might be a sign you need to get a new boiler installed. Your central heating system will not only cost more to repair, but it may also be messing with your heating bills due to lagging energy efficiency. In such cases, it’s best to opt for a brand new boiler.

Boiler brands in Millwall

Here are some of the most highly-reviewed boiler brands available in Millwall. These prominent names all provide heating solutions across the UK and offer a variety of boiler models of different types and sizes. Many, if not all, of these brands provide extended warranties if the installation is conducted by a fully-qualified Gas Safe registered engineer.

1. Worcester Bosch
Trustpilot: 4.6 out of 5 | 44,955 reviews

Worcester

2. Vaillant
Trustpilot: 4.2 out of 5 | 20,425 reviews

Vaillant boilers

3. Ideal
Trustpilot: 4.8 out of 5 | 50,096 reviews

Ideal boiler

4. Baxi
Trustpilot: 4.6 out of 5 | 63,196 reviews

Baxi boiler

5. Viessmann boilers
Trustpilot: 4.4 out of 5 | 5,058 reviews

Veissmann boilers

Whether you’re looking for a Viessmann or a Vaillant boiler installation in Millwall, you’ll still need a pro with reliable credentials and good prices.

If you’re looking into prices for a new boiler, it can be hard to find the best ones if undertaken all on your own. We understand that not everyone has the time for that. That’s why our service can provide you with the best quotes from up to 3 Gas Safe registered engineers.

All you need to do is fill out a 30-second form and we’ll handle the rest. There are tons of trusted professionals in Millwall who are up to the task of installing your new central heating system or replacing a boiler. Click the button below to get started and find the cheapest boiler installation in Millwall from seasoned professionals.

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Get a new boiler in Millwall in 5 easy steps

New boiler in Millwall

The boiler installation process can be summarised in the following steps: 

  1. Choose the right boiler for your home: Decide which type of boiler can best attend to your household’s energy needs. 
  2. Find the installer you want to work with: Subsequently, choose the installer you trust to provide a quality installation. Make sure to compare several professionals before committing to one. 
  3. Removal of the old boiler: The installer removes your old boiler and prepares the installation site for the new boiler. For instance, if adjustments need to be made to the pipework, these will be made at this stage. 
  4. Installation of the new boiler: The installer fits the new boiler. This process is fairly straightforward and easy when installing a combi boiler. However, because of their additional components, a system or a conventional boiler will take longer to install. 
  5. Final checks: The installer runs some tests to make sure that your new boiler runs optimally. You can then begin to enjoy your new appliance. 

Find the best boiler installers in Millwall

Boiler quotes in Millwall

To ensure that you are getting a safe and high-quality boiler installation or replacement, you will need to work with one of the best installers in your area. However, looking up installers and comparing their services and costs on your own can stretch on for hours or even days. 

Instead of wasting your precious free time, let us help you get started in just 30 seconds. All you have to do is fill in our short form and we’ll connect you with up to 3 of the best boiler installers in your area. They will offer you quotes for a new boiler installation, so you can find the installer you want to work with and secure the best deal for your home at the same time. 

Simply click below to request free, non-binding quotes now!

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