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Vaillant Boiler Costs, Information and Quotes


Vaillant has been producing boilers since 1894 and currently employ over 2,500 people worldwide. Their portfolio includes regular, system and combi boilers as well as heat pumps. In the UK, customers are able to buy their products from independent dealers or directly through the manufacturer, depending on what they’re looking for.

The brand has established a reputation for innovation with products like the Combi 20 Combi-Boiler Plus and System 20i System-Boilers. Both these products received significant awards, and it’s not hard to see why. They offer a choice of combi, system or open vent boilers in gas, with their innovative Open Vent system, which is unique in the UK. And, if you choose a system or open vent boiler from the brand, then this will be delivered alongside an inverter condensing heating pump from the same brand.

If you’re looking for boiler prices, reviews or comparison, then why not compare Vaillant boilers right now! Whether your home is currently on gas, oil or electric, we’ll show you the possibilities available when it comes to choosing a new heating system, so you can buy the best boiler for your home.

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Compare Vaillant Combi Boiler Features & Prices


Vaillant are the biggest name in combi boilers. Combi boilers were first brought to UK households by Vaillant and they have remained a popular choice ever since. Vaillant combi boilers now have many rivals but the brand is still associated with the most reliable and efficient models on the market. If you need to buy a combi boiler, then it's worth doing your homework on how a combi works and which model you should go for.

Vaillant have a number of affordable and reliable combi boilers to choose from so you can create the right system for your home and your budget.

Model kW ErP Warranty Price
Vaillant ecoFIT pure 835 35
A Heat
A Water
2 £1205.17
Vaillant ecoTEC 835 exclusive Green iQ 35
A Heat
A Water
5 £1527.9
Vaillant ecoTEC 843 exclusive Green iQ 43
A Heat
A Water
5 £1779.46

Compare Vaillant Regular Boiler Features & Prices


If you are already being heated by a regular boiler or even a combi boiler, then installing a Vaillant regular boiler is an ideal way to improve your heating system and the quality of your home. A Vaillant regular boiler will offer you much more space for features like underfloor heating, a bigger range of outputs and it will mean you have access to Vaillant's unique turbine corrosion prevention system.

Take a browse through these guides for advice on everything from choosing the most suitable boiler to everything you need for the installation process including working out which model you require and getting ready in the days leading up to the installation.

Model kW ErP Warranty Price
Vaillant ecoFIT pure 415 15
A Heat
Water
2 £789.4
Vaillant ecoFIT pure 418 18
A Heat
Water
2 £872.51
Vaillant ecoFIT pure 425 25
A Heat
Water
2 £949.82
Vaillant ecoFIT pure 430 30
A Heat
Water
2 £1012.3
Vaillant ecoFIT pure 435 35
A Heat
Water
2 £1517.2
Vaillant ecoTEC Plus 415 15
A Heat
Water
5 £869.17
Vaillant ecoTEC Plus 418 18
A Heat
Water
5 £1018.35
Vaillant ecoTEC Plus 424 24
A Heat
Water
5 £1048.33
Vaillant ecoTEC Plus 430 30
A Heat
Water
5 £1142.86
Vaillant ecoTEC Plus 435 35
A Heat
Water
5 £1602.9

Compare Vaillant System Boiler Features & Prices


The Vaillant system boilers range features some of the most efficient and reliable products on the market in terms of heating.

In the home heating arena, there is hardly any competition to Vaillant system boilers. You will see them in homes and businesses because so many people have enjoyed using them for years. If you are in the market for a new boiler or would like an upgrade for your home’s current heating system, then you have come to the right place.

Model kW ErP Warranty Price
Vaillant ecoFIT pure 618 19
A Heat
Water
2 £1013.5
Vaillant ecoFIT pure 625 25
A Heat
Water
2 £1200.16
Vaillant ecoFIT pure 630 30
A Heat
Water
2 £1258.99
Vaillant ecoTEC 627 exclusive Green iQ 27
A Heat
Water
5 £1408.39
Vaillant ecoTEC Plus 612 12
A Heat
Water
5 £945.5
Vaillant ecoTEC Plus 615 15
A Heat
Water
5 £991.39
Vaillant ecoTEC Plus 618 18
A Heat
Water
5 £1097.55
Vaillant ecoTEC Plus 624 24
A Heat
Water
5 £1257.79

Vaillant boiler fault codes explained


The fault codes are one of the most important safety features of Vaillant Boilers. The boiler will display an error code if there is a fault during operation. More importantly, in many cases it will display the error code will give a useful description of the fault and instruct the user to carry out a repair.

Most Vaillant boilers have a fault code readout built in to let you know what's wrong. This is good because it speeds up the engineering process and reduces the cost of diagnostics. When the fault is monitored by technicians, they refer to error code charts which tell them what part of the boiler needs repairing or replacing.

We have put together a comprehensive guide full of Vaillant boiler fault codes to help you troubleshoot your boiler or determine if it's time to call an engineer.

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