Worcester Bosch Installer
London · Up to 12-Year Guarantees
Searching for a Worcester Bosch installer in London? DGN GAS installs and registers Greenstar boilers with Worcester Bosch's longest available guarantees — up to 12 years on eligible models.
A Worcester Bosch installer
offering the longest guarantees
If you're looking for a Worcester Bosch installer in London, DGN GAS is registered on Worcester Bosch's installer scheme — which means we install Greenstar boilers and register their guarantees directly with the manufacturer. On eligible models we offer our clients Worcester Bosch's longest available guarantees — up to 12 years.
Worcester Bosch is one of the most trusted names in British heating, and the Greenstar range is a consistent Which? Best Buy favourite. Fitted and registered properly, it's a boiler that earns its reputation.
The Greenstar range
combi & system
Greenstar 8000 Style / Life
Worcester's flagship range, available in a choice of finishes and the model that carries the longest guarantee. The premium choice for design-conscious homes wanting the maximum warranty term.
Greenstar 4000 & 2000
Reliable, efficient combi boilers ideal for flats and family homes. Strong guarantee terms and the same Worcester build quality, with our full installation and registration service.




Greenstar guarantees
by model
Worcester's flagship range
Popular mid-range combi
Efficient everyday combi
Entry-level
To qualify for the maximum term, the boiler must be installed by an approved installer, registered within 30 days, fitted with the manufacturer's specified system filter, and serviced annually by a Gas Safe registered engineer. We'll confirm the exact guarantee for your chosen boiler when we quote.
Why register through
a Worcester Bosch installer
The longest Worcester Bosch guarantees are only available when the boiler is installed and registered by a Worcester Bosch installer, with the specified system filter fitted. Buy the same boiler from a non-registered fitter and that extended cover may not apply.
As a registered Worcester Bosch installer, DGN GAS handles the guarantee registration for you, fits to Worcester's standard, and keeps the cover valid through annual servicing across West, North West and South West London. We'll always tell you honestly which guarantee length applies to the model you choose.
Worcester Bosch installer
questions answered
Are you a Worcester Bosch installer in London?
Yes. DGN GAS is registered on the Worcester Bosch installer scheme, which means we install Greenstar boilers and register their guarantees directly with Worcester Bosch, right across London.
Can I really get a 12-year guarantee on a Worcester boiler?
Yes — on eligible models. Worcester Bosch's longest guarantee, up to 12 years, is available on the flagship Greenstar 8000 when fitted and registered by a Worcester Bosch installer with the specified filter. Other Greenstar models carry shorter terms (10, 7 or 5 years), and the boiler must be serviced annually to keep the guarantee valid. We'll confirm the exact cover for your chosen boiler.
Which Worcester Bosch boiler should I choose?
For the longest guarantee and a premium finish, the Greenstar 8000. For a dependable, lower-cost option, the 4000 or 2000. We size every installation to your property and hot-water needs rather than applying a standard spec.
Worcester Bosch
installation questions
Are you a Worcester Bosch installer?
Which Worcester Bosch boilers do you install?
What warranty can I get on a Worcester Bosch boiler?
Why choose Worcester Bosch?
Do you install Worcester Bosch boilers across London?
"Glad to have met Ravinder. DGN GAS serviced my Worcester Bosch boiler and I am happy with the service. Was recommended to me by family and I would recommend to others too."
Planning a Worcester Bosch installation?
Speak to a registered Worcester Bosch installer about a new Greenstar boiler. London-wide installation.
Get a Quote 07813 474638