– Boiler Installation Costs & Prices

boiler cost in 2023

Understanding Boiler Costs: A Comprehensive Guide

Installing a new boiler involves various considerations, including the cost. Whether you’re looking at a boiler a combi-boiler, a system boiler, or a conventional boiler, understanding the factors affecting the installation cost is crucial. In this article, we will delve into the world of boilers and discuss the various aspects that contribute to the cost of a new boiler installation.

Types of Boilers and Their Costs:

Boiler installation costs:

When considering a new boiler, you have several options to choose from. Combi boilers, new system boilers, boilers, and conventional boilers each have their price ranges. Combi boilers, ranging from £1,500 to £3000, offer a compact solution for smaller properties. System boilers, with costs falling between £2000 and £3,500, are suitable for larger homes. Conventional boilers, priced similarly to system boilers, cater to high hot water demands.

Combi boiler:

Combi Boilers: Ideal for Space-Conscious Homes

Combi boilers, also known as combination boilers, are a popular choice for homeowners, particularly those with limited space. These boilers are designed to provide both heating and hot water from a single unit, eliminating the need for a separate hot water cylinder or cold water tank. Combi boiler is a very popular choice in London, North London. The cost of a new combi boiler is also affordable. A full combi boiler costs £ to install and normally comes with 8 to 10 years of warranty when it is installed by a gas-safe registered engineer, and everything is up to standards. Here at MML Plumbing Ltd in North London, we are carefully choosing and recommending the best boiler manufacturer. Whether your choice is a gas combi boiler, heat-only boiler, regular or system boiler or just a hot water cylinder replacement, we are here to help. Our boiler installation costs are transparent, with detailed labour costs, and material costs and you will know what to expect to pay. The existing boiler will be removed and disposed of.

Overall, combi boilers are an excellent choice for space-conscious homeowners looking for an efficient and convenient heating and hot water solution. If you have a smaller property and prioritize space efficiency, a combi boiler could be the ideal choice for your heating needs. New boilers are also hydrogen-ready boilers which could be the future of the heating system.

System boiler:

System Boilers: Ideal for Homes with Higher Hot Water Demands

System boilers are an excellent choice for homes with higher hot water demands. Unlike combi boilers, system boilers require a separate hot water storage and regular boiler cylinder but eliminate the need for a cold water tank.

If you have a larger home with higher hot water requirements or multiple bathrooms, a system boiler can be the ideal solution to ensure an ample supply of hot water whenever you need it.

#Regular boiler costs

Combi conversion cost :

Converting a heating system is not the same as replacing a gas boiler at the same location. The work is complex and risky. The labour cost and material cost are much higher than it is when it comes to a straightforward boiler installation. So a boiler conversion and installation cost/boiler replacement cost is likely to be less.

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Factors Influencing the Cost:

Size and Output

The size and output of the boiler are significant factors affecting the overall cost. The size is determined by the heat output required to adequately heat your home and provide hot water. A professional heating engineer will assess your property’s heating needs and recommend the appropriate boiler size. Larger boilers with higher outputs tend to be more expensive than smaller ones.

  1. Size and Output: The size and heat output required for your property influence the overall cost. Larger boilers with higher outputs tend to be more expensive.

Efficiency Rating

The energy efficiency of a boiler is indicated by its ErP (Energy-related Products) rating. Boilers with higher efficiency ratings are generally more expensive upfront but can result in long-term savings on energy bills. High-efficiency condensing boilers are popular choices as they can reduce energy consumption and lower your carbon footprint

  1. Efficiency Rating: Boilers with higher efficiency ratings, such as condensing boilers, might have a higher upfront cost but can lead to long-term savings on energy bills.

Installation Complexity

The complexity of the installation process can impact the cost of a new boiler. If the replacement involves significant modifications to the existing heating system, such as relocating pipes or upgrading the flue system, it may incur additional expenses. Factors like accessibility, pipework, and ventilation requirements can influence installation complexity and subsequently affect the boiler installation’s overall cost.

  1. Installation Complexity: The complexity of the installation process, including modifications to the existing heating system, can affect the cost. Factors like accessibility, pipework, and ventilation requirements play a role.

Additional Components

When installing a new boiler, several additional components may be required, depending on your specific circumstances. These components can include thermostats, radiator valves, magnetic filters, water treatment systems, and more. Each of these additions comes with its own cost, which should be considered when budgeting for your own new boiler installation costs.

  1. Additional Components: Depending on your specific needs, additional components like thermostats, radiator valves, magnetic filters, and water treatment systems may be necessary. Each of these components incurs an additional cost.
  2. New boiler flue costs: When it comes to installing a boiler, other essential components need to be considered, and some of them can come with a significant cost, such as the flue. The responsibility of choosing and providing a suitable flue for the boiler lies with your qualified gas engineer. They have the expertise to determine the appropriate flue requirements for your specific boiler installation.
  3. New heating controls & smart thermostat cost: £30–£300With recent technological advances boilers are easily turned on. A thermostat, like the Hive or Nest, can control the temperature of a boiler to determine how much power it is using. According to the manufacturer of the controller, different amounts are added to the new boiler’s costs.
  4. Magnetic boiler filter cost: £100 → £200The filter is attached inline to pipes and helps you protect your water heating system. These are based on powerful magnetism to catch dust particles from the water vapour and stop them from entering the water vapour and causing unnecessary damage and leaking. Installation costs for installing filters are always included in your quotations. We add this, but we’re not paying more for it and it is standard across the UK. The cost of magnetic heating equipment filters varies depending on the type of equipment used.

Obtaining Quotes and Comparing Costs:

To get an accurate estimate, it’s recommended to contact heating engineers who can assess your property and provide detailed breakdowns of the costs involved. By comparing multiple quotes, you can make an informed decision that aligns with your budget and requirements.

Summary: average cost of new boiler replacement

Let us summarize all the information we’re finding on new boiler costs. Typical costs of a boiler vary depending on several things: models, manufacturers, performance, warranty size, and output rating. Most people are expected to pay around £2750 – £5000 for a new boiler. In addition, the average boiler installation cost is determined by the material cost, the labour costs, the complexity of work as well as time spent in installing.

A list of the top boiler manufacturers and their boilers. MML Plumbing’s recommended boilers:

  • 1 Viessmann Combi Boiler, System or Heat only
  • 2 Alpha Combi Boiler, System and Heat only
  • 3 Vaillant Combi Boiler, System and Heat only
  • 4 Worcester Bosch Combi Boiler, System and Heat only
  • 5 Ideal Combi Boiler, System and Heat only
  • 6 BAXI Combi Boiler, System and Heat only


Understanding the cost of a new boiler installation is essential for homeowners. Factors such as the type of boiler, size, efficiency rating, installation complexity, and additional components all contribute to the overall cost. By considering these aspects and consulting with qualified professionals, you can determine the cost of your new boiler installation. Remember to choose a new boiler replacement that meets your heating demands efficiently, leading to long-term savings and a comfortable home.

If you have any further questions or need assistance with your new boiler installation, do not hesitate to seek professional advice from a reputable heating engineer or boiler company.

If you are considering a new boiler installation, don’t hesitate to reach out.

Frequently asked questions:

How much will I save by installing a new boiler?

Condensing boilers are a fantastic option for energy-consuming boilers. They are Rated and are as effective as A+++ thus lowering the cost of energy by as much as 30% * per year.

Why does installing a boiler cost so much? – How much does a new boiler cost to replace?

Installing a boiler can be a costly process due to several factors that contribute to the overall cost of the boiler. These factors include:

  1. Expensive Materials: The materials required for a boiler installation, such as the boiler unit itself, pipes, fittings, and additional components, can be expensive. The cost of high-quality materials adds to the overall installation cost.
  2. Labour: Boiler installation involves skilled labour, typically provided by qualified gas engineers. The expertise and experience of these professionals come at a cost, contributing to the overall expense.
  3. Responsibility: Boiler installation requires adherence to strict regulations and safety standards. Heating engineers carry the responsibility of ensuring proper installation, which may require additional time and effort, adding to the cost.
  4. Knowledge and Complexity of Work: Installing a boiler is a complex task that requires extensive knowledge and expertise. Heating engineers need to consider factors such as the specific requirements of the property, proper sizing, connections, and system integration. The complexity of the work involved justifies the higher cost.

Considering these factors, the cost of installing a boiler encompasses not only the materials but also the skilled labour, responsibility, knowledge, and complexity of the work. It is essential to invest in a top boiler manufacturer and professional installation to ensure a safe and efficient heating system for your home.

How many years should a new boiler last?

If you recently purchased a new boiler and you have thought about replacing your old one, then it might be worth looking at your old boiler’s lifespan. Typical households have boilers that are capable of serving around 10-15 years.

How much is a new boiler on average in the UK?

A brand-new boiler costs around £2500 to £5500 depending on the model and type of boiler system.

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Combi boiler costs – boiler replacement cost guide:

For any further questions or assistance with your new boiler installation, feel free to contact MML Plumbing Ltd via email, phone, or the online contact form provided.

Pros and cons of installing a combi boiler

Before you go ahead and invest in the installation of the new combi boiler, it may make sense to evaluate both the disadvantages and advantages. Ask a gas engineer.

What are you paying for with a new combi boiler?

For any further questions or assistance with your new boiler installation, feel free to contact MML Plumbing Ltd via email, phone, or the online contact form provided.

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Your local North London gas safe registered company :

MML Plumbing Ltd

North London and boroughs Services:

  • Plumbing
  • Heating
  • Gas services
  • Boiler installation
  • Advanced leak detection
  • Pre-purchase plumbing, heating, and gas surveys
  • Boiler and bathroom installation


If you have any specific questions or need further assistance, feel free to ask!

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