WORCESTER BOSCH GREENSTAR 30i CLASSIC SYSTEM
The Worcester Bosch Greenstar 30i Classic System was the most powerful model in Worcester Bosch’s compact Greenstar i System range and remains installed in many larger homes today. While it is no longer manufactured, this page explains its specification, who it was designed for and your options for servicing, repairs or replacement.
We continue to service and repair this model regularly across Buckinghamshire, Berkshire, West London and surrounding counties.
Need help with your Greenstar 30i Classic System? Contact our Worcester Bosch accredited and Gas Safe engineers.
What is the Greenstar 30i Classic System?
The Greenstar 30i Classic System is a wall-mounted gas system boiler and the highest output model in Worcester Bosch’s compact Greenstar i System range. With a 30kW output and cupboard-sized dimensions, it delivered excellent heating performance for larger homes while still fitting inside a standard kitchen cupboard.
As a system boiler, it works alongside a separate hot water cylinder to store and deliver hot water on demand. This makes it well suited to larger homes with multiple bathrooms and higher heating demand, while its compact footprint offered installation flexibility that larger system boilers could not match.
The 30i Classic System was part of Worcester Bosch’s most popular wall-mounted system boiler range, consistently winning the Which? Best Buy award and well regarded for its combination of power, efficiency and compact design.
> Explore the full Worcester Bosch Greenstar range
Greenstar 30i Classic System: Key Specifications
✔ Boiler type: System boiler
✔ Central heating output: 30kW
✔ Efficiency rating: A rated / 92%
✔ Fuel type: Natural gas or LPG
✔ Dimensions: 690mm x 390mm x 280mm
✔ Frost protection: Yes
✔ Solar compatible: Yes, compatible with Greenskies panels
✔ Smart control compatible: Yes, including Bosch EasyControl
✔ Suitable for: Larger homes, up to 20 radiators, 2 or more bathrooms with cylinder
Who is this boiler suitable for?
The 30i Classic System was designed for larger homes with an existing hot water cylinder and high heating demand. It is best suited to properties with:
- 3 to 5 bedrooms
- 2 or more bathrooms
- Up to 20 radiators
- An existing hot water cylinder
- No loft cold water tank required
As the highest output model in the compact i System range, the 30i Classic System was the natural choice for larger homes that still needed a cupboard-fit installation. For homes needing an even higher output, the CDi Classic system boilers offered outputs up to 35kW. If you already have a 30i Classic System installed and are unsure whether to service, repair or replace it, our engineers can assess your system and give you honest advice.
Servicing and repairing your Greenstar 30i Classic System
Although the 30i Classic System is no longer manufactured, it can still be serviced and repaired. Parts remain widely available for this model and our Gas Safe engineers carry out full services and fault diagnosis across Buckinghamshire, Berkshire, West London and surrounding counties.
Regular servicing is important for any boiler, but particularly for older models. An annual service helps to:
- Maintain efficiency and keep running costs down
- Identify worn components before they cause a breakdown
- Keep your boiler operating safely
- Satisfy any remaining warranty or insurance requirements
If your 30i Classic System has developed a fault, our engineers carry a wide range of Worcester Bosch parts and aim to resolve most repairs in a single visit.
When to consider replacing your 30i Classic System
If your boiler is over 12 to 15 years old or experiencing repeated breakdowns, replacement is often the more cost-effective long-term decision. The 30i Classic System has been replaced by the Worcester Bosch Greenstar 8000 Life System, which is the most suitable modern equivalent for larger homes with high heating demand.
The Greenstar 8000 Life 30kW System is the natural modern equivalent for homes currently running a 30i Classic System. It delivers better efficiency, a longer warranty and full compatibility with the Bosch EasyControl smart thermostat.
Greenstar 30i Classic System vs Greenstar 8000 Life 30kW System
Efficiency: 92% vs up to 94%
Warranty: 5 to 7 years vs up to 12 years
Controls: Basic display vs smart control ready
ErP rating: A rated vs A rated
Status: Discontinued vs current model
> Learn more about the Greenstar 8000 Life
Why choose Heppelthwaite – Red Van Plumbers?
Fewer than 5% of UK installers achieve Worcester Bosch Platinum Accredited status. As Platinum Accredited Installers, we install, service and repair the full Greenstar range, including legacy i range system boilers, across Buckinghamshire, Berkshire, West London and surrounding counties.
- Platinum Accredited Worcester Bosch Installers
- Family-run business established 1948
- Gas Safe registered engineers
- Free fixed quotations with no hidden costs
- Up to 12-year warranty available on new Greenstar 8000 Life installations
> Request a free quote or call 01628 533 550
FAQs – Worcester Bosch Greenstar 30i Classic System
Is the Worcester Bosch Greenstar 30i Classic System still available to buy?
No. The 30i Classic System is no longer manufactured. The modern equivalent for larger homes is the Worcester Bosch Greenstar 8000 Life 30kW System boiler, which offers improved efficiency and a longer warranty.
Can the Greenstar 30i Classic System still be serviced?
Yes. Parts remain widely available and our Gas Safe engineers service and repair all Greenstar i system models across Buckinghamshire, Berkshire and West London. Annual servicing is recommended to maintain efficiency and safety.
What replaced the Greenstar 30i Classic System?
The Greenstar 30i Classic System was replaced by the Worcester Bosch Greenstar 8000 Life system boiler range. The 8000 Life offers up to 94% efficiency, smart control compatibility and up to a 12-year warranty when installed by a Platinum Accredited Installer.
Will the Greenstar 30i Classic System fit in a kitchen cupboard?
Yes. Despite its 30kW output, the 30i Classic System has compact dimensions of 690mm x 390mm x 280mm, allowing installation inside a standard kitchen cupboard. This was one of its key advantages over larger system boilers of similar output.
What is the difference between the 30i Classic System and the 27i Classic System?
Both share the same compact dimensions and are part of the same Greenstar i range. The 27i Classic System delivers 27kW while the 30i delivers 30kW, making the 30i better suited to larger homes with greater heating demand and more radiators to heat.
How long should a Greenstar 30i Classic System last?
With regular annual servicing, a well-maintained 30i Classic System can last between 12 and 15 years. If your boiler is approaching or has exceeded this age, it may be worth considering a boiler replacement to avoid repeated repair costs.
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