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1,216 reviews

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1,216 reviews

Vaillant Boiler Guarantee 2021

What is a boiler warranty?

Boilers are purchased and installed to provide heating and hot water to our homes for a number of years. We expect them to be installed out of sight to get on with their job but should something go wrong, it’s good to know that the manufacturer will be happy to help. That’s why not only finding the right model of boiler for you is important, but the right boiler warranty too.

A standard warranty period tends to last between 1-10 years, and when a longer warranty is placed on a certain model then you know that the manufacturer really believes in it. Having said that, you don’t just want to go with the boiler that has the longest warranty period. Depending on the manufacturer, warranties can cover completely different things like only covering labour costs or certain parts of the boiler.

Vaillant have moved towards offering guarantees with their boilers rather than a warranty. This essentially means that if there’s a fault with the boiler, as a result of the manufacturing process, they’re guaranteed to fix it. This is unlike a warranty which is a promise from the manufacturer to inspect the problem.

To help you understand the guarantees offered by Vaillant, we’ve put together this simple guide that will tell you everything you need to know.

Who are Vaillant?

Standard Vaillant warranty

What’s covered by the guarantee?

Terms and Conditions

How to register your guarantee

Guaranteesfor each Vaillant boiler

Who are Vaillant?

Vaillant have been creating products in the heating market for over 140 years, from water heaters in their early years to pioneering Combi boilers. Find out more about Vaillant and their full range of boilers on Boiler Guide.

Standard Vaillant guarantee

Depending on the model, Vaillant boilers come with 2-5 years parts and labour warranty as standard but many have a 7-10 year warranty available when installed by a Vaillant advance installer.

What’s covered by the guarantee?

The warranty only covers boiler component failures, should the failure be caused by contaminated water then you’ll end up being charged for the engineer’s visit.

Terms and conditions

When being installed, the installer must complete the Benchmark checklist and you’ll have to keep hold of it so that you can show it upon request to Vaillant. During the warranty, your Vaillant boiler must be serviced annually by a registered Gas Safe engineer – the cost of this service isn’t included in the warranty.

How to register your guarantee

To register your boiler guarantee, you can fill in your details online via Vaillant’s website and this has to be done within 30 days of installation.


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Guarantees for each Vaillant boiler

Boiler Model Standard Guarantee Max. Extended Guarantee
Vaillant Combi Gas Boilers
Vaillant EcoTEC Exclusive Green IQ 835 Combi Gas Boiler 5 years 10 years
Vaillant EcoTEC Exclusive Green IQ 843 Combi Gas Boiler 5 years 10 years
Vaillant ecoTEC plus 825 Combi Gas Boiler 5 years 10 years
Vaillant ecoTEC plus 832 Combi Gas Boiler 5 years 10 years
Vaillant ecoTEC plus 835 Combi Gas Boiler 5 years 10 years
Vaillant ecoTEC plus 838 Combi Gas Boiler 5 years 10 years
Vaillant EcoTEC plus 938 Combi Storage Gas Boiler 5 years 10 years
Vaillant ecoTEC Pro 24 kW Combi Gas Boiler 2 years 10 years
Vaillant ecoTEC Pro 28 kW Combi Gas Boiler 2 years 10 years
Vaillant ecoTEC Pro 30kW Combi Gas boiler 2 years 10 years
Vaillant EcoFIT pure 825 Combi Gas Boiler 2 years 10 years
Vaillant EcoFIT pure 830 Combi Gas Boiler 2 years 10 years
Vaillant EcoFIT pure 835 Combi Gas Boiler 2 years 10 years
Vaillant Regular Gas Boilers
Vaillant ecoTEC plus 412 12kW Regular Gas Boiler 5 years 10 years
Vaillant ecoTEC plus 415 15kW Regular Gas Boiler 5 years 10 years
Vaillant ecoTEC plus 418 18kW Regular Gas Boiler 5 years 10 years
Vaillant ecoTEC plus 424 24kW Regular Gas Boiler 5 years 10 years
Vaillant ecoTEC plus 430 30kW Regular Gas Boiler 5 years 10 years
Vaillant ecoTEC plus 435 35kW Regular Gas Boiler 5 years 10 years
Vaillant ecoFIT pure 12kW Regular Gas Boiler 2 years 10 years
Vaillant EcoFIT Pure 15kW Regular Gas Boiler 2 years 10 years
Vaillant EcoFIT Pure 18kW Regular Gas Boiler 2 years 10 years
Vaillant EcoFIT Pure 25kW Regular Gas Boiler 2 years 10 years
Vaillant EcoFIT Pure 30kW Regular Gas Boiler 2 years 10 years
Vaillant EcoFIT Pure 35kW Regular Gas Boiler 2 years 10 years
System Gas Boilers
Vaillant ecoTec plus 624 System Gas Boiler 5 years 10 years
Vaillant ecoTec plus 630 System Gas Boiler 5 years 10 years
Vaillant ecoTec plus 637 System Gas Boiler 5 years 10 years
Vaillant ecoFIT pure 612 system Gas boiler 2 years 10 years
Vaillant ecoFIT pure 615 system Gas boiler 2 years 10 years
Vaillant ecoFIT pure 618 system Gas boiler 2 years 10 years
Vaillant ecoFIT pure 625 system Gas boiler 2 years 10 years
Vaillant ecoFIT pure 630 system Gas boiler 2 years 10 years
Vaillant ecoTEC exclusive Green iQ 627 System Gas Boiler 7 years
Vaillant EcoTEC Plus 64kW System Gas Boiler 5 years 10 years
Vaillant EcoTEC Plus 48kW System Gas Boiler 5 years 10 years

If you think a Vaillant boiler would suit the hot water and heating demands of your home, send us an enquiry today and get free quotes from trusted engineers near you.

NOTE: Manufacturer warranties are subject to change so it’s always advisable to take a look at their current terms and conditions and any relevant special offers.

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