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Worcester Bosch Boiler Guarantee 2021

What is a boiler warranty?

Purchasing a boiler isn’t like buying a product that will be forgotten about a few days later, it’s something that you want to be able to rely on day after day. That’s why it’s good to know you’re with a manufacturer who will look after your boiler after the installation. Enter boiler warranties…

With a boiler warranty, you’re covered by the manufacturer for any repairs for a set period of time after installation. This warranty period tends to last between 1-10 years and, as a general rule of thumb, the longer the warranty, the more faith the manufacturer has in their boiler.

Rather than a warranty, Worcester Bosch offer a guarantee with all of their boilers. This essentially means that in the unlikely event of a fault with the boiler, Worcester Bosch will repair the issue if it’s the result of a manufacturing fault. A warranty is a promise from the manufacturer that they will at the very least inspect the boiler if there’s a fault.

We don’t want you straining your eyes going through all the terms and conditions which is why we’ve put together this guide to simply summarise what the boiler guarantee covers.

Who are Worcester Bosch?

Standard Worcester Bosch guarantee

What’s covered by the guarantee?

Terms and conditions

How to register your guarantee

Guarantees for each Worcester Bosch boiler

Who are Worcester Bosch?

If you’re going to be familiar with any boiler manufacturer it’s likely to be Worcester Bosch, one of the most popular and well known brands on the market. Worcester Bosch set very high standards that have seen them scoop up seven Which? Best Buy awards in a row. Their boilers even provide heating to the royals as they supply boilers to Her Majesty The Queen’s Sandringham Estate. Find out more about this manufacturer and their full range of boilers here.

Standard Worcester Bosch guarantee

The majority of Worcester Bosch boilers come with a standard guarantee of 2 years, although the Greenstar HE (High Efficiency) Gas-Fired Boilers: CDi, Ri, Si and i ranges extends to 5 years.

What’s covered by the guarantee?

Worcester Bosch boilers are guaranteed against any material or manufacturing faults for the duration of the guarantee period.

Terms and conditions

Checking the terms and conditions of your warranty is always important no matter which manufacturer you end up going with as there may be some important information hidden away.

With Worcester Bosch, some of the terms are quite simple, like knowing where your boiler was installed which needs to be the United Kingdom of Great Britain and Northern Ireland, the Republic of Ireland, the Isle of Man or the Channel Islands. To keep the warranty valid, you’ll need to arrange an annual service of your Worcester Bosch boiler every 12 months after installation for every year of your warranty.

How to register your warranty

You’ll need to register your boiler online within 30 days of installation to activate the warranty and then your warranty will commence as of the installation date.


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Guarantees for each Worcester Bosch boiler

Boiler Model Standard Warranty Max. Extended Warranty
Worcester Bosch Combi Gas Boilers
Worcester Bosch Greenstar Highflow 550CDi Combi Gas Boiler 5 years 10 Years
Worcester Bosch Greenstar Highflow 440CDi Combi Gas Boiler 5 years 10 Years
Worcester Bosch Greenstar 30Si Compact Combi Gas Boiler 5 years 10 Years
Worcester Bosch Greenstar 25Si Compact Combi Gas Boiler 5 years 10 Years
Worcester Bosch Greenstar 36CDi Compact Combi Gas Boiler 5 years 10 Years
Worcester Bosch Greenstar 25i Combi Gas Boiler 5 years 10 Years
Worcester Bosch Greenstar 30i Combi Gas Boiler 5 years 10 Years
Greenstar 8000 Style 30kW Combi Gas Boiler 5 Years 12 Years
Greenstar 8000 Style 35kW Combi Gas Boiler 5 Years 12 Years
Greenstar 8000 Style 40kW Combi Gas Boiler 5 Years 12 Years
Greenstar 8000 Style 45kW Combi Gas Boiler 5 Years 12 Years
Greenstar 8000 Style 50kW Combi Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 30kW Combi Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 35kW Combi Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 40kW Combi Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 45kW Combi Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 50kW Combi Gas Boiler 5 Years 12 Years
Regular Gas Boilers
Worcester Bosch Greenstar 12Ri Regular Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 15Ri Regular Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 18Ri Regular Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 24Ri Regular Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 27Ri Regular Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 30Ri Regular Gas Boiler 5 years 10 years
Worcester Bosch Greenstar FS 30CDi Regular gas boiler 5 years 10 Years
Worcester Bosch Greenstar FS 42CDi Regular gas boiler 5 years 10 Years
Greenstar 8000 Life 30kW Regular Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 35kW Regular Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 40kW Regular Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 45kW Regular Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 50kW Regular Gas Boiler 5 Years 12 Years
System Gas Boilers
Worcester Bosch Greenstar 24i System Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 12i System Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 9i System Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 15i System Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 18i System Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 21i System Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 27i System Gas Boiler 5 years 10 years
Worcester Bosch Greenstar 30i System Gas Boiler 5 years 10 years
Greenstar 8000 Style 30kW System Gas Boiler 5 Years 12 Years
Greenstar 8000 Style 35kW System Gas boiler 5 Years 12 Years
Greenstar 8000 Life 30kW System Gas Boiler 5 Years 12 Years
Greenstar 8000 Life 35kW System Gas Boiler 5 Years 12 Years

Worcester Bosch oil boiler guarantees

Oil Boiler Model Standard Warranty Max. Extended Warranty
Combi Oil Boilers
Worcester Bosch Greenstar Heatslave External 32 Combi Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Heatslave II 18 Combi Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Heatslave II 25 Combi Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Heatslave II 32 Combi Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Heatslave II External 25 Combi Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Heatslave II External 32 Combi Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Heatslave II External 18kW Combi Oil Boiler 2 years 8 years
Regular Oil Boilers
Worcester Bosch Greenstar Danesmoor 32 Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Utility 70 Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Utility 50 Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor 25 Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor Utility 25 Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor Utility 32 Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor External 18 Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor External 25kW Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor External 32 Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor 18 Regular Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor Utility 18 Regular Oil Boiler 2 years 8 years
System Oil Boilers
Worcester Bosch Greenstar Danesmoor Utility 18 System Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor 18 System Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor 25 System Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor 32 System Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor Utility 25 System Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor Utility 32 System Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor External 18 System Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor External 25 System Oil Boiler 2 years 8 years
Worcester Bosch Greenstar Danesmoor External 32 System Oil Boiler 2 years 8 years

If you think a Worcester Bosch boiler could be the right choice for your home, send us an enquiry today and get free quotes for installation 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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