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Vaillant Boiler Prices, Reviews & Compare


Vaillant’s award-winning combi, system and open vent boilers are renowned for their reliability, performance and efficiency.

Each domestic Vaillant boiler has high quality parts and components, backed up by excellent warranties for total peace of mind. Vaillant’s flagship range is the ecoTEC Plus which is extremely well reviewed by customers and highly recommended by professional engineers due to its high performance and ease of installation and servicing.

Whatever your central heating and hot water needs, a Gas Safe engineer is the best person to help and – if you send us an enquiry today – we’ll find up to 3 in your area to provide free, no-obligation quotes.

Vaillant boiler types: CombiRegularSystem

The range of Vaillant boilers are available in the following fuel types: Gas

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Vaillant Combi Range & Prices

Vaillant ecoTEC exclusive 832 Combi Gas BoilerCombination boilers or ‘combi’ boilers are the most popular type of boiler in the UK.

These space saving boilers don’t require a hot water cylinder or a tank and offer various outputs across three ranges:

  • ecoTEC Plus combi boilers
  • ecoTEC Exclusive combi boilers
  • ecoTEC Pro combi boilers

Benefits of a Combi Boiler

  • No need for a hot water storage tank or lots of pipework
  • Straightforward to install and cost effective for repairs too
  • Provides your hot water on demand so you’re not limited by a tank size
  • An energy efficient choice as you only heat the water you actually need

Compare the Costs of Combi Boilers

Vaillant offer a range of combi boilers at various price points so you are sure to find the right boiler to fit your budget. Make sure it’s the right size and specification for your hot water and heating demands – and for the best deal, we suggest you get quotes from up to three trusted boiler installers.

Review the complete range of Vaillant Gas Combi boilers prices…

Boiler Model kW Efficiency Warranty Typical Price
Vaillant ecoTEC plus 825 Combi Gas Boiler 25kw 89.3% 5 years £1025 COMPARE
Vaillant ecoTEC exclusive 832 Combi Gas Boiler 32kw 89.3% 3 years £1200 COMPARE
Vaillant ecoTEC Pro 28 kW Combi Gas Boiler 28kw 89.3% 2 years £990 COMPARE
Vaillant ecoTec plus 937 Combi Gas Boiler 37kw 89.3.% 5 years £1500 COMPARE
Vaillant EcoTEC Exclusive 32kW Combi Gas Boiler 32kw 89.8% 5 years £1395 COMPARE
Vaillant EcoTEC Exclusive Green IQ 835 Combi Gas Boiler 35kw 94% 5 years £1195 COMPARE
Vaillant ecoTEC Pro 30kW combi Gas boiler 30kw 89.3% 2 years £1395 COMPARE
Vaillant EcoFIt sustain 825 Combi Gas Boiler 25kw 89.3% 5 years £875 COMPARE
Vaillant EcoFIt sustain 830 Combi Gas Boiler 30kw 89.3% 5 years £986 COMPARE
Vaillant EcoFIt sustain 835 Combi Gas Boiler 35kw 89.3% 5 years £1094 COMPARE
Vaillant ecoTEC plus 832 Combi Gas Boiler 32kw 89.3% 5 years £1200 COMPARE
Vaillant ecoTEC plus 835 Combi Gas Boiler 35kw 89.3% 5 years £1250 COMPARE
Vaillant ecoTEC plus 838 Combi Gas Boiler 38kw 89.3% 5 years £1355 COMPARE
Vaillant ecoTEC Pro 24 kW Combi Gas Boiler 24kw 89.3% 5 years £930 COMPARE
Vaillant EcoTEC Exclusive Green IQ 843 Combi Gas Boiler 43kw 94% 5 years £1750 COMPARE
Vaillant EcoFIT pure 825 Combi Gas Boiler 25kw 89% 5 years £875 COMPARE
Vaillant EcoFIT pure 830 Combi Gas Boiler 30kw 89% 5 years £1050 COMPARE
Vaillant EcoFIT pure 835 Combi Gas Boiler 35kw 89% 5 years £1279 COMPARE
Vaillant EcoTEC plus 938 Combi Gas Boiler 38kw 89.3% 5 years £1510 COMPARE
Vaillant Home 25kW Combi Gas Boiler 25kw 89.3% 2 years £875 COMPARE
Vaillant Home 30kW Combi Gas Boiler 30kw 89.3% 2 years £1010 COMPARE
Vaillant Home 35kW Combi Gas Boiler 35kw 89.3% 2 years £1234 COMPARE
Vaillant EcoTEC Plus 48kW System Gas Boiler 48kw 94% 5 years £2520 COMPARE

Vaillant Regular Range & Prices

Vaillant ecoTEC plus 438 Regular Gas BoilerChoosing a new boiler can be daunting, especially if the existing boiler has been in place for years.

Boilers have changed significantly in the last decade and are more energy efficient than ever before.

Vaillant offer the ideal solution for older properties with their Regular boiler range.

These are the perfect modern-day replacement for your older boiler and should be close to like-for-like in terms of design and pipework, but with the benefits of a new system.

Benefits of a Regular boiler

  • Older property? This is an ideal replacement as the pipework will be similar
  • It’s fine to use more than one tap at the same time
  • Works well with an electric immersion heater as a hot water back-up
  • Can be used with solar thermal panels to heat your water

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Vaillant Regular boiler prices

Investing in a new boiler is a large expense, however the good news is that the latest models are more energy efficient so you’ll save on your energy bills in the long term.

The price of your new boiler will depend on the size of your property so check out the specification for each model.

Compare the complete range of Vaillant Gas Regular boilers prices…

Vaillant System Range & Prices

Vaillant ecoTec plus 612 System BoilerModern home owners love the Vaillant System range of boilers as they’re designed for the way we live today.

When space is at a premium, who wants to find room for a bulky cold water storage tank? And if you’re lucky enough to have a loft conversion, there’s no room for it up there either.

The Vaillant System range is the ideal solution for lots of reasons.

Benefits of a System boiler

  • Many heating components are built-in, so installation is easy
  • No need for a cold water feed tank means it’s ideal for smaller homes or those without loft space
  • Thinking of using solar to heat water? A system boiler is compatible
  • Serves multiple taps simultaneously without reducing water pressure or temperature

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Vaillant System boiler prices

There are plenty of options in the Vaillant System range of boilers so you should be able to find something that ticks your boxes in terms of heating and water requirements but doesn’t blow the budget either. Click on the individual models to find out more about the specification for each boiler, and then request three quotes for the installed cost.

Review the complete range of Vaillant Gas System boilers prices…

Boiler Model kW Efficiency Warranty Typical Price
Vaillant ecoTec plus 612 System Gas Boiler 12kw 89.0% 5 years £850 COMPARE
Vaillant ecoTec plus 615 System Gas Boiler 15kw 89% 5 years £965 COMPARE
Vaillant ecoTec plus 618 System Gas Boiler 18kw 89.3% 5 years £965 COMPARE
Vaillant ecoTec plus 624 System Gas Boiler 24kw 89.4% 5 years £1005 COMPARE
Vaillant ecoTec plus 630 System Gas Boiler 30kw 89.4% 5 years £1150 COMPARE
Vaillant ecoTec plus 637 System Gas Boiler 37kw 89.2% 5 years £1250 COMPARE
Vaillant ecoFIT pure 612 system Gas boiler 12kw 89.3% 5 years £820 COMPARE
Vaillant ecoFIT pure 615 system Gas boiler 15kw 89.1% 5 years £880 COMPARE
Vaillant ecoFIT pure 618 system Gas boiler 18kw 89% 5 years £950 COMPARE
Vaillant ecoFIT pure 625 system Gas boiler 25kw 89% 5 years £1175 COMPARE
Vaillant ecoFIT pure 630 system Gas boiler 30kw 89.3% 5 years £1256 COMPARE
Vaillant ecoTEC exclusive Green iQ 627 System Gas Boiler 27kw 94% 7 years £1370 COMPARE
Vaillant EcoTEC 65kW System Gas Boiler 65kw 95.5% 2 years £3000 COMPARE
Vaillant EcoTEC 46kW System Gas Boiler 46kw 95.8% 2 years £2400 COMPARE
Vaillant EcoTEC Plus 64kW System Gas Boiler 64kw 94% 5 years £0 COMPARE
Vaillant Home 12kW System Gas Boiler 12kw 89.4% 2 years £0 COMPARE
Vaillant Home 15kW System Gas Boiler 15kw 89.4% 2 years £0 COMPARE
Vaillant Home 18kW System Gas Boiler 18kw 89.4% 2 years £0 COMPARE
Vaillant Home 25kW System Gas Boiler 25kw 89.4% 2 years £0 COMPARE


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Vaillant Boiler Service

It’s important to keep your boiler in the best possible condition with an annual boiler service by a professional engineer. This will ensure the boiler can operate as efficiently as possible, keeping heating bills to a minimum, and that there are no potential safety issues to be concerned about. A boiler service is also a great way to catch and fix small repairs before they have the chance to worsen over time and cause an expensive breakdown. Find out what’s involved in an annual boiler service, why it’s so important, the benefits and how much they cost in Vaillant Boiler Service.

Vaillant Boiler Warranty

Every boiler manufacturer offers a standard warranty with their boilers which last between 1-10 years. The warranty is your insurance policy and means if a fault develops the manufacturer will resolve it within a specified time frame. Some warranties include both parts and labour while others may only cover parts. The most important thing to remember is to get your boiler serviced by a Gas Safe registered engineer every year as failing to do so is likely to invalidate your warranty. For more detail about this brand’s warranty (including the small print) take a look at Vaillant Boiler Warranty.

Vaillant Boiler Repair Advice

Even the highest quality boiler can develop faults and problems as they age. Some are minor issues you may be able to handle yourself but most will need a Gas Safe registered engineer to diagnose and repair the problem. To find out if there are any common problems associated with this manufacturer you can read our guide to Vaillant Boiler Repairs & Common Vaillant Boiler Problems.


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Vaillant Error Codes

Error codes may appear on your boiler’s display; it’s your boiler’s way of telling you that something is wrong. Each manufacturer uses a different coding system to help an engineer to diagnose a fault. In some cases it may be a simple issue such as low pressure which you can adjust yourself but more technical faults will certainly need a professional. We’ve put together a list of error codes for all Vaillant Boilers to help you understand what’s wrong before you contact an engineer.

Vaillant Heating Controls

Vaillant offers a wide range of different controls and thermostats from simple analogue heating timers to smartphone App based thermostat – vSMART – which enables you to manage your heating from a smart device wherever you are.

Vaillant Renewable Heating Solutions

Vaillant also offer one of the widest ranges of renewable heating solutions on the market including:

Air Source Heat Pump: aroTHERM
Ground Source Heat Pump: geoTHERM
Water Source Heat Pump: flexoTHERM and fluoCOLLECT
Solar Thermal Collectors: auroTHERM VFK

In addition, Vaillant also manufacture a hybrid heating solution, the aroTHERM Hybrid, which is a combination of an air source heat pump and a condensing gas combi boiler. The intelligent system automatically detects which of the two technologies is the more energy efficient and cost effective to use depending on the weather and switches between them to heat water for your home.

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