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Last updated: 25th March, 2024


Vaillant Boiler Prices

Vaillant Boiler Prices

Key takeaways

  • Vaillant boilers are known for their energy efficiency and eco-friendliness.
  • There is a wide variety of models to suit different living spaces and heating needs.
  • It's vital to understand the costs, features, and benefits to make the right choice for your home.

As an online boiler installation company, iHeat provides an in-depth look at Vaillant boiler prices, helping customers make informed decisions about their heating solutions.

Vaillant is one of Europe's leading boiler manufacturers, offering energy-efficient and eco-friendly gas boilers that provide central heating and hot water for various living spaces. 

With a reputation for high quality, reliability, and performance, Vaillant boilers have become a popular choice for homeowners who seek both comfort and savings on their heating bills.

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Their range of boilers cater to different heating needs, whether it's for a small flat or a larger family home. When considering a new boiler, knowing the costs involved, as well as understanding the features and benefits of various Vaillant models, will help you make an informed decision to suit your specific requirements.

Overview of Vaillant Boilers

Vaillant is a well-established German company, renowned for its high-quality and reliable boilers. With a wide price range, Vaillant offers models that cater to various heating needs and budgets. Homeowners and property managers in the UK often prefer Vaillant boilers due to their efficiency and longevity.

One of the key features of Vaillant boilers is their exceptional energy efficiency. These boilers have been manufactured to the highest standards to provide an uninterrupted supply of heat and hot water while reducing heating costs by up to 30%. This is made possible by Vaillant's advanced engineering and technology that ensures optimal performance with lower energy consumption.

In terms of models, Vaillant offers combi boilers, system boilers, and regular boilers, each with varying outputs to suit different homes. For instance, the combi boiler range is highly popular in UK households because of their fast production of hot water without needing additional tanks. 

On the other hand, Vaillant's system boilers are designed for homes with greater hot water requirements, while regular boilers are better suited for larger properties requiring consistent heating.

Another advantage of Vaillant boilers is their quiet operation, which means minimal disruption to your living environment. Furthermore, you can control your boiler through a smartphone, offering ease and convenience in managing your heating system. When you choose a Vaillant Advance installer, you can also benefit from extended guarantees.

To ensure safety and compliance, all Vaillant boilers must be installed by Gas Safe certified professionals. This guarantees adherence to stringent safety standards, giving homeowners and property managers peace of mind.

In conclusion, Vaillant boilers are a reliable choice for those seeking quality, efficiency, and durability. With a vast range of models and prices to suit diverse needs, there's a Vaillant boiler for every home.

Types of Vaillant Boilers

Combi Boilers

Vaillant combi boilers are highly popular in the UK as they provide both central heating and hot water without the need for a separate hot water storage cylinder. The ecoFIT Pure and ecoTEC Pro are two popular models within Vaillant's combi boiler range.

Vaillant Combis

ecoTEC exclusive with Green iQ combi

Vaillant’s ‘premium combination boiler’, the ecoTEC Exclusive Green IQ is a range topping boiler in terms of performance, control and efficiency. This top notch combi is fully compatible with vSMART, Vaillant’s heating control app, as well as being Quiet Mark approved for its low function volume.

The Green IQ hallmark means this combi is not only extremely efficient, but also capable of adaptive heating, meaning no heat or money will ever go to waste.

kW Output

Flow Rate (l/minute)





ecoTEC plus combi

Vaillant’s ‘flexible all rounder for every home’, this high performance combination boiler efficiently delivers precision heating to reduce your fuel bills. Having been hand built in Vaillant’s ward winning UK manufacturing HQ, the ecoTEC plus is capable of delivering hot water within 5 seconds, all without the need for a storage tank or cylinder.

kW Output

Flow Rate (l/minute)









ecoTEC plus combi store

As a combi the ecoTEC plus is ‘perfectly suited to larger homes’, even properties with 3-4 bedrooms. Integrated hot water storage can deliver up to 20 litres of hot water per minute.

A high efficiency pump greatly reduces energy consumption all the while ensuring a smooth as performance as possible. The Vaillant ecoTEC plus, along with all Vaillant ecoTEC models, has an outstanding ErP efficiency rating of A.

kW Output

Flow Rate (l/minute)



ecoTEC pro combi

The ecoTEC pro combi is ‘perfect for mid-sized homes’, powerful enough to service up to three bedrooms and one bathroom. 

Vaillant’s vSMART app allows homeowners to synchronise their changing heating needs with their boiler, allowing for an extremely efficient performance.

kW Output

Flow Rate (l/minute)







ecoFIT pure combi

Vaillant claim their ecoTEC pure is ‘compact’ but powerful, easily fitting in a standard kitchen cupboard while never compromising on performance.

The compact pure is ideal for smaller properties or any person who would like to be more economical with their space.

kW Output

Flow Rate (l/minute)







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System Boilers

Vaillant system boilers are designed for homes with higher hot water requirements. They work with an external hot water cylinder to provide hot water and central heating. The ecoFIT Pure System and ecoTEC Plus System models are among Vaillant system boilers available.

Vaillant ecoFIT Pure System

The Vaillant ecoFIT Pure System boiler stands out due to its high efficiency and flexibility, making it an excellent choice for homeowners with various heating requirements. Hand-built with attention to detail, this system boiler has been awarded the Which? Best Buy status, along with the Quiet Mark accreditation, indicating that it is among the quietest in its category.

One impressive feature of the ecoFIT Pure System boiler is its compact size. This advantage allows homeowners with limited space to easily fit the boiler within a kitchen cupboard. Moreover, the rear flue option enhances installation flexibility and accommodates diverse home layouts.

When it comes to performance, the ecoFIT Pure System boiler shines with its A-rated 94% efficiency. This high efficiency results in reduced household emissions by approximately 30%, making it both cost-effective and environmentally friendly.

Vaillant ecoTEC Plus System

The Vaillant ecoTEC Plus System boiler is a popular and efficient choice for homeowners who require a reliable central heating system. This option boasts several key features and benefits that make it stand out amongst competitors.

Smart Home Integration: The ecoTEC Plus boiler integrates seamlessly with smart home systems, allowing homeowners to control their heating using Amazon Alexa, Apple HomeKit, and the user-friendly myVAILLANT app.

Energy Efficiency: With an ErP efficiency rating of 'A', the ecoTEC Plus system can significantly lower gas consumption, ultimately saving homeowners on energy costs and reducing carbon emissions.

New Technology: Equipped with the latest ioniDETECT technology, this boiler intelligently monitors gas combustion, further improving system efficiency for maximum energy optimisation.

Frost Protection: The built-in frost protection system ensures the ecoTEC Plus boiler continues to function even in cold weather conditions, preventing potential damage to the heating system.

Rapid Hot Water Delivery: The ecoTEC Plus has been designed to deliver hot water within just five seconds, providing users with almost instant access to heated water for their daily needs.

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Regular Boilers

Regular (heat-only) boilers from Vaillant, also known as conventional or vented boilers, work with a separate hot water storage tank and a cold water storage tank to provide hot water and central heating. The ecoFIT Pure Regular model is a notable example.

Vaillant ecoTEC Plus Heat Only

The Vaillant ecoTEC Plus heat only boiler is a reliable and energy-efficient choice for homes with traditional open vented heating systems.

One of the key features of the ecoTEC Plus is its high efficiency, reaching an operational efficiency of 89.3%. This attribute has earned it an ErP (Energy-related Products Directive) rating of A, making it more environmentally friendly and cost-effective. A well-functioning ecoTEC Plus boiler can help to reduce energy bills and lower carbon emissions in the long term.

The compact and lightweight design of the Vaillant ecoTEC Plus makes it easy to install in smaller spaces, such as in a kitchen cupboard. The boiler is also approved by Quiet Mark, which means that it operates with minimal noise, ensuring a quiet and comfortable environment in the home.

While boiler prices and associated costs fluctuate over time, it's important to consider the long-term value when investing in a new boiler. The ecoTEC Plus is 85% recyclable, making it a sustainable choice that aligns with Vaillant's commitment towards a low carbon future. Additionally, the Green IQ range is another option offered by Vaillant for homeowners who are particularly eco-conscious.

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Gas Boilers

All of the Vaillant combi, system, and regular boilers are powered by gas and come with condensing technology. This technology reduces energy consumption and makes them more environmentally friendly. Gas Safe registered engineers are a must for their installation and maintenance.

Vaillant ecoTEC Range

The ecoTEC range by Vaillant comprises various models for combi, regular, and system boilers. It includes the ecoTEC Exclusive with Green iQ Combi, ecoTEC Plus Combi, ecoTEC Plus Regular, and ecoTEC 46kW & 64kW System boilers, ensuring options for every household need.

Vaillant ecoTEC Plus

The Vaillant ecoTEC Plus series is designed for efficiency, with some models providing an A-rated condensing performance. They are available in combi, regular, and system configurations, and they feature user-friendly controls and compact sizes for easy installation.

Vaillant ecoTEC Pure

The Vaillant ecoFIT Pure series from Vaillant offers reliable, efficient and affordable models. The series covers combi, regular, and system boiler types, ensuring a suitable option for various homes. EcoFIT Pure boilers have easy-to-understand controls and are compatible with heat pumps.

Vaillant ecoTEC Pro

The ecoTEC Pro combi boiler range features compact and lightweight models for small to medium-sized homes. They offer reliable heating and hot water, ease of use, and lower energy bills thanks to their energy-efficient design.

Boiler Sizes and Prices

Vaillant boilers come in various sizes and prices, with combi boiler prices ranging from £780 to £2,800. System and regular boiler prices vary as well, depending on the model and output. It's essential to choose the right size to match your home's heating and hot water needs.

Comparison with Other Brands

Vaillant competes with other notable boiler manufacturers like Worcester Bosch, Viessmann, and Ideal. While each brand offers a range of products with different features and benefits, Vaillant is renowned for its German engineering, reliability, and efficiency.

Energy Efficiency and Bills

Vaillant boilers generally have an ERP rating of A, making them highly energy-efficient and helping homeowners save on energy bills. Using smart thermostats and following proper maintenance procedures can further reduce energy consumption.

Boiler Problems and Solutions

Occasionally, a Vaillant boiler may encounter issues, such as fault codes or reduced performance. Consulting the user manual and contacting a Gas Safe registered engineer can help address these problems and maintain your boiler's efficiency and reliability.

New Boiler Costs with iHeat

Boilers can be a daunting purchase for many people as they’re an appliance with a lot of responsibility, providing heat for you and your family is something you want to get right. Boilers aren’t exactly a quickly disposable item either, potentially lasting you a decade.

Boiler costs can be split into two segments: the first is the actual boiler itself (unit price), and the second is the cost of the boiler being installed (set up) in your property by an expert engineer. 

Here at iHeat, we want to remove all of this undue stress and make the decision making process of upgrading to a new central heating system, as easy as possible.

Boiler costs can vary depending on a number of factors including their brand, model, fuel, output, warranty, labour and installation type.

Typically a new boiler will cost between £1,845 and £3,500.

Below is a list of average boiler installations offered by iHeat (intended as a guide only).

Installation Type

Price (inc VAT)

Combi to combi swap


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System to combi conversion


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New boiler install


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Back boiler to a combi


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System to system


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Some location factors that can influence the price of your new boiler

You will be given a specific quote from the boiler installation company based on:

  • The type of home you have (i.e. terraced, semi-detached, etc.)

  • How many bedrooms you have

  • How many bathrooms you have

  • Your postcode and specific location

Frequently Asked Questions

How much is a new Vaillant boiler UK?

In the UK, the cost of a new Vaillant boiler varies depending on the specific model and its features. Typically, the price range falls between £1,500 and £3,500. It's important to shop around and gather multiple quotes to get the best deal possible for your needs.

What is the average price to replace a boiler system?

The average price to replace a boiler system in the UK can range from £1,500 to £3,500, including installation costs. However, this figure may vary depending on the complexity of the installation job, location and the chosen boiler model.

Which Vaillant boiler is best?

The "best" Vaillant boiler for your home will depend on several factors, such as the size of your property, your hot water requirements and your budget. Vaillant offers a range of combi boilers, system boilers and conventional boilers, each with its unique benefits. It's advisable to consult with a professional installer to help you decide the most suitable option for your home.

What is the average price of a Vaillant boiler?

The average price of a Vaillant boiler in the UK falls between £1,000 and £3,000, depending on the specific model and features. Don't forget to account for installation costs which can average between £1,500 - £1,800. It's important to compare prices from various suppliers and installers to ensure you're getting the best deal.

How much does it cost to fit a new Vaillant boiler?

Fitting a new Vaillant boiler in the UK typically costs between £1,500 and £3,500, including the cost of the boiler and installation. This figure can vary based on the complexity of the job, the chosen model, and your location. It's recommended to obtain multiple quotes from both national and local installers to find the most competitive price.

What is the lifespan of a Vaillant boiler?

The lifespan of a Vaillant boiler can greatly depend on factors such as usage, maintenance and the specific model. Generally, Vaillant boilers are built to last, with an average lifespan of 10-15 years. Regular servicing, following the manufacturer's recommendations, can help prolong the life of your boiler.

Is a Vaillant boiler good?

Vaillant is a well-respected and reputable brand within the heating industry. They're known for their high-quality, energy-efficient boilers and commitment to innovation. As with any boiler, the key to ensuring its reliability and performance lies in regular maintenance, correct installation and choosing the appropriate model to fit your needs.

Stephen Day profile photo
Article by
Stephen Day | Co-founder
Gas Safe registered and FGAS certified engineer with over 20 years experience in the heating and cooling industry.