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Vaillant ecoFIT Pure 25kW, 30kW, 35kW Combi Boiler


The Vaillant ecoFit Pure is comfortably one of the most reliable, and quietest combination boilers available today. 

If you are in the market for a new Combi boiler, you will have a hard time finding anything more impressive than the Vaillant ecoFIT. This boiler has been created to suit any lifestyle and will fit into near enough any property. Vaillant ecoFIT Pure 25kW, 30kW, 35kW Combi Boiler Compare Boiler Quotes

It will comfortably fit in even the most modest kitchen and offers an impressively low energy consumption.

You’ll also be amazed by just how quiet this boiler is, compared to other options on the market today, as well as how much control you have over your heating settings, via a simple smartphone app. 


What Does the ecoFIT Pure Cost?

When investing in a new boiler, the cost is always a significant concern.

The ecoFIT Pure by Vaillant offers three different heat outputs; 25kW, 30kW, and 35kW, which range in price from around £850 to £1100.

Always remember the price does not include installation fees which will be an extra cost. Vaillant ecoFIT Pure 25kW, 30kW, 35kW Combi Boiler Compare Boiler Quotes

If you would prefer a boiler to include installation fees and to find the right boiler for you online rather having to make a phone call, go to 

Boiler Central will ask you 9 questions online which will take you 20second. They also offer to have your boiler fitted before you pay a penny!

Before purchasing any new boiler, contact a Gas Safe registered engineer to make sure this boiler meets the needs of your property, and to discuss which output you need. 


Is This Boiler Suitable For My Home?

As with other combination boilers, the ecoFIT pure doesn’t need the separate components of a cold water tank and a hot water cylinder. This means that it can fit into a much smaller space than other boiler types, and is why they are often recommended for smaller homes and properties. 

This type of boiler could also be ideal for larger homes, however, with its three heat output options. Vaillant ecoFIT Pure 25kW, 30kW, 35kW Combi Boiler Compare Boiler Quotes

When deciding whether or not any boiler is suitable, it’s important to speak to a Gas Safe registered engineer, who can offer tailored advice after inspecting your home. 


Is the Vaillant ecoFIT Pure an Efficient Boiler?


A high-efficiency boiler will help to keep your home warm and comfortable, while saving you money, and even helping to reduce your carbon footprint.

You won’t do much better than this combination boiler from Vaillant. Vaillant ecoFIT Pure 25kW, 30kW, 35kW Combi Boiler Compare Boiler Quotes

It is an A-rated boiler with an efficiency of 89% and an exceptionally powerful heat exchanger which allows for low energy consumption. It’s also smart. When it realises that you need a lower setting to keep your home comfortable, it can lower its maximum output to 20%.


What Extra Features and Controls Does This Boiler Offer?

Nowadays we want more control of our appliances. We’re no longer content to plug them in and leave them to it. We want to take control, to save money, increase efficiency and get our home exactly as we want it, to maximise our comfort. 

The ecoFIT Pure gives you a great range of controls.

There’s a reset button, a pressure gauge, heating and water temperature controls. There are some other controls that you can opt for too; these include the vSMART app, which gives you heating control with weather compensation. This lets you set timers and control temperatures from your smartphone, even when you are away from your home. 

Other desirable features are an easy to read LED display and an aluminium heat exchanger to improve performance and increase the lifespan of your boiler as well as Quiet Mark approval, promising a satisfyingly quiet boiler. 


How long is the Warranty?

The standard warranty for parts and labour on this boiler is two years. Vaillant ecoFIT Pure 25kW, 30kW, 35kW Combi Boiler Compare Boiler Quotes

However, if you select a Vaillant Advance installer to fit your new boiler, they may offer a bonus warranty of between seven and ten years. 




  • Costs between approximately £850 and £1100
  • Three heating output options: 25kW, 30kW and 35kW, to suit your needs
  • 10.4, 12.2 or 14.1 litres per minute hot water flow rates
  • Dimensions of 700mm (H) x 390mm (W) x 295mm (D)
  • Gas fuel source
  • A-rated for efficiency
  • Smart technology compatible
  • 2-year warranty as standard – a bonus of up to 10 years

Pros and Cons

Which? Rates the ecoFIT Pure combination boiler by Vaillant as one of the best, and most efficient boilers on the market today. With plenty of pros and only one negotiable con, this is a fantastic option for many homes. Here is a 


  • Awarded Which? Best Buy with a score of 80%
  • Fits in most kitchen cupboards
  • Suited to any sized properties
  • No need for separate cylinder or water tanks
  • Good-quality components Vaillant ecoFIT Pure 25kW, 30kW, 35kW Combi Boiler Compare Boiler Quotes
  • Simple to install and maintain
  • Top and rear flue options and flexible sitting options
  • Approved by Quiet Mark
  • Provides fantastic energy efficiency – reducing your fuel bills and carbon emissions
  • vSMART app compatibility – monitor and control your heating and hot water even when you are out of your home


  • Short standard warranty of just two years


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What our customers think

5 Stars on Trustpilot

Would recommend

Stressed when needed a new boiler but easy process with affordable finance. New boiler installed within a few days with option for next day.

Paul Jones 5 Star on Trustpilot

We were very impressed

On the day, they came on time. Lovely people, they kept everything clean. Explained everything to me. No mess, kept me informed.

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Great experience - quick to arrange, easy to work with the very responsive online team and all installed faster than expected.

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