Which? Trusted Traders
Installed from £2445

Vaillant Boilers

With more Which? Best Buy and home heating awards than they can shake a stick at, Vaillant are not far from unrivalled in the UK heating scene. Get a free fixed price quote in 60 seconds (no details required) Installed as fast as next day.*

Vaillant Boilers
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About Vaillant boilers

Vaillant is a leading German heating and cooling company that has earned its position as one of the top boiler brands in mainland Europe and the UK.

Their selection of gas boilers has built a reputation for reliability, technical brilliance, superb aftercare and customer service.

Why Get Your Vaillant Boiler Installed with Heatable?

Upgrading your home with a brand-new Vaillant boiler from Heatable comes with numerous benefits. When you choose us for your installation, you're choosing quality assured by our Gas Safe certified installation team. Additionally, we back our workmanship with a comprehensive 24-month installation warranty. Our commitment to excellence extends beyond installation. We pride ourselves on providing exceptional aftercare and support. This dedication to quality service is why we became the first boiler industry member to be recognised as a Which? Trusted Trader. It's also the reason behind our thousands of 5-star reviews on the independent review platform, Trustpilot.

How Long Should a Vaillant Boiler Last?

Vaillant boilers are designed to have a lifespan of around 10 to 15 years, but with proper servicing and maintenance, they can last even longer.

Which Vaillant Boiler Do You Need?

The precise model that is right for you will depend on your specific goals and budget. If you would like us to recommend a variety of boilers that would be suitable for your home, use our free tool by clicking the button below.

Popular Vaillant Boilers

Vaillant ecoTEC Plus

Vaillant ecoTEC Plus

26kW Combi boiler

  • 10 year warranty (including all parts and labour)
  • Includes free controls, magnetic boiler filter and flush
  • Hand-built in Derbyshire, UK
  • Expertly installed by our Which? Approved engineers

440mm (w) x 720mm (h) x 352mm (d)

Price from

£2,895

or, monthly from

£38.10

Vaillant ecoTEC Plus

Vaillant ecoTEC Plus

15kW System boiler

  • 10 year warranty (including all parts and labour)
  • Includes a magnetic boiler filter and system flush
  • Hand-built in Derbyshire, UK
  • Plenty of power and efficiency for larger homes

440mm (w) x 720mm (h) x 352mm (d)

Price from

£2,895

or, monthly from

£38.10

Vaillant ecoTEC Plus

Vaillant ecoTEC Plus

12kW Regular boiler

  • 10 year warranty (including all parts and labour)
  • Inc. a free chemical flush, and magnetic filter
  • Hand-built in Derbyshire, UK
  • Great value from one of the UK's biggest brands

440mm (w) x 720mm (h) x 352mm (d)

Price from

£2,845

or, monthly from

£37.44

Vaillant ecoFIT Pure

Vaillant ecoFIT Pure

25kW Combi boiler

  • 10 year warranty (including all parts and labour)
  • Comes fully installed with Vaillant sensoROOM controls
  • Compact dimensions make it ideal for tight spaces
  • Powerful enough for small to medium sized homes

440mm (w) x 720mm (h) x 352mm (d)

Price from

£2,495

or, monthly from

£32.83

Vaillant ecoFIT Pure

Vaillant ecoFIT Pure

15kW System boiler

  • 10 year warranty (including all parts and labour)
  • Comes fully installed with Vaillant sensoROOM controls
  • Compact dimensions make it ideal for tight spaces
  • Powerful enough for small to medium sized homes

440mm (w) x 720mm (h) x 352mm (d)

Price from

£2,745

or, monthly from

£36.12

Vaillant ecoFIT Pure

Vaillant ecoFIT Pure

12kW Regular boiler

  • 10 year warranty (including all parts and labour)
  • Inc. a free chemical flush, and magnetic filter
  • Expertly installed by our Which? Approved engineers
  • Great value from one of the UK's biggest brands

440mm (w) x 720mm (h) x 352mm (d)

Price from

£2,445

or, monthly from

£32.18

Replacement boilers,redefined.

All-inclusive boiler installations

New boiler

Installation

Controls¹

Pipework

Flush

Flue

Filter

Recycling

Aftercare

Which? Trusted Traders

We've been Which? Trusted boiler installers for 3 years running.

2023 • 2024 • 2025

Get a new boiler with up-to 4 years
Interest-free boiler installationsAPR²

Next day boiler installations

If ordered before 3pm

Heatable installer

Expert, local installers

We fit new boilers in every corner of the UK.

Fit boilers? Fit for us.

Which? Trusted installations

  • Which? approved installers
  • Fixed online prices
  • Next day installs
Which? Trusted Traders
Which? Trusted Traders. The first and only online boiler installation business to become a Which? Trusted Trader.
Heatable aftercare
All-inclusive aftercare. Each and every installation gets our exclusive 12 month workmanship warranty.
5 star reviews
5 star reviews. Across Trustpilot, Google and Reviews.io, we've got over 10,000 5 star reviews with an average rating of 4.9.
Gas safe registered
A safe choice. We're Gas Safe registered for boiler installations, and MCS certified for solar installations.

Boiler FAQ's

This largely depends on the efficiency of your current boiler and how much energy you use. For example, you could save as much as £840 per year if you are upgrading from an old G-rated boiler to a modern A-rated boiler (along with a programmer, room thermostat and thermostatic radiator controls (TRV's)). For more details, check the Energy Savings Trust website.
The cost of a new boiler depends on a variety of factors, including the type of boiler you select, your location and the complexity of your installation.
On average installing a new boiler takes between 1 to 2 days to complete. If you are having your old boiler replaced in the same location and with the same type of boiler the process will be quicker (likely one day) compared to installing a different type of boiler in a new location.
Yes, you can. All of our installations have finance options available. You can spread the cost over 3, 5, 7 or 10 years at a rate of 11.9% APR. Or, you can spread the cost with 0% APR up-to 4 years on certain packages. Deposits are optional.
Yes, we can certainly try to. Heatable works with a panel of lenders, so, if for whatever reason you didn't pass with our primary lender, we will pass it over to a secondary who will be able to assist.
That's not a problem. If for whatever reason you change your mind, or need to cancel your install, you can do so without any fees. If you have paid any monies via card, we will refund this directly back to your account.
All of our installation partners go through a lengthy and strict Which? Trusted onboarding process. They're fully insured, highly rated and carry a unique set of skills to get your job, done. You'll receive details about your engineer prior to your install, including photo ID, so you know who to expect.

Yes, in more ways than one.

First, we're a Which? Trusted Traders which means we have to work to their strict standards and guidelines.

Secondly, we're Gas Safe Registered, and so are all of the installers who fit for us. We're also fully insured, giving you total peace of mind.

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© 2026 Heatable.

Heatable Ltd is registered in England and Wales No. 08804726. Our head office address is: The Old Rectory, Winwick, Warrington, WA2 8LE.

Heatable Ltd is authorised and regulated by the Financial Conduct Authority, FRN 805259 We are a credit broker and not a lender and offer credit from a panel of lenders. We may receive commission if your application is successful and the amount may vary depending on the product chosen and the amount of credit taken out. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered are regulated by the Financial Conduct Authority.

¹Wireless controls included on combi boiler installations only.

²4 years 0% APR available on selected products (subject to status and affordability).

³Saving based on the average energy bill of a detached home when upgrading from a G-rated boiler to an A-rated boiler. Source: Energy Saving Trust.

Gas Safe Registered
MCS Certified
RECC Certified
Trustmark Endorsed
NAPIT Certified
REFCOM Registered
Which? Trusted Traders