Boiler manufacturers Worcester Bosch and Ideal are leading brands in the heating industry. Both develop some of the most state-of-the-art boiler systems available on the market, so it’s no wonder some homeowners struggle to make a choice between their products.

The Worcester Bosch Greenstar 30i and the Ideal Logic C30 are two popular combi boiler models, especially for small to medium homes. Here we will compare and contrast these boilers and help you decide on which option is best for your home.


Product descriptions


Both the 30i and the C30 are combi boiler systems, which means that they provide both hot water and heating all through one compact unit. Here’s a brief description of both boilers:


Worcester Bosch Greenstar 30i


Inspired by installer feedback, this boiler system is designed to provide you with quality home heating without using excessive energy. Featuring a user-friendly control panel and a condensate siphon to help prevent pipe freezing in the winter, this boiler could provide you with central heating that is easy to use, as well as granting you peace of mind. Plus, with 10.8l/min flow rate, you could access the hot water you need on demand – no need to worry about running out as water is heated directly from your mains supply.


Ideal Logic C30


This energy-efficient boiler is fully modulating, so it could operate at lower outputs when possible to help you save energy. With compact dimensions, the unit could fit into your kitchen cupboard and allow you to save space. Additionally, its low lift weight could make installation quick and easy and it also comes equipped with boiler frost protection to give you extra security in the winter. The C30 is endorsed by the Energy Saving Trust and comes with a standard 7-year manufacturer-backed warranty to give you added peace of mind** (HomeServe could extend this to 10 years at the point of sale).


Outputs, size and features


The 30i and C30 are typically best suited to small to medium homes with average central heating demands. The table below highlights how the two systems differ in size, key features and alternative outputs.



Boiler Full output range Size Key features
Worcester Bosch Greenstar 30i 25i, 30i 710 × 400 × 330(mm) Simple boiler controls, clear information display, condensate siphon, weather compensation option, low lift weight.
Ideal Logic C30 C24, C30, C35 700 × 395 × 278(mm) Low lift weight, Energy Saving Trust endorsed, boiler frost protection, back-lit LCD digital display, flue variants, Quiet Mark accredited..


Ratings & Reviews

Worcester Bosch’s Greenstar 30i and Ideal’s Logic C30 are popular options for new boiler installations. They have both received a number of positive reviews and ratings, for example the 30i is A-rated for energy-efficiency and has been deemed a ‘Best Buy’ by Which? for 10 consecutive years*.

Likewise, the Ideal C30 has a number of esteemed accolades under its belt. The range was reader recommended by Good Housekeeping Magazine in 2018**** and all boilers in the series are also A-rated for energy-efficiency.




The price of getting either of these boilers installed will depend on the complexity of the installation. For example, if you are switching from a heat-only boiler system the total installation price is likely to be higher than it would be if you were simply replacing another combi.

Generally, Worcester Bosch boilers tend to be slightly more expensive than Ideal boilers, but we recommend getting a quote to weigh up your options before you make a final decision. Our free online quote tool will take factors such as your heating and hot water requirements and provide you with a fixed-price quote*** for your installation. The tool will also recommend a suitable boiler for your home and can give you a choice between both Worcester Bosch and Ideal boilers.


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A manufacturer-backed warranty is designed to provide you with added peace of mind in knowing that should your boiler develop a fault during its warranty period, your manufacturer could provide you with a replacement or repair at no added cost**.

Both the Worcester Bosch 30i and the Ideal Logic C30 come with a 5-year manufacturer-backed warranty through HomeServe. There is also an option to extend you warranty to 10-years at the point of sale**.


The result


After taking a close look at both boilers, it can be said that the Worcester Bosch 30i and the Ideal Logic C30 could both equally be a great choice for a small to medium home. The quality and reliability associated with the Worcester Bosch brand could sway some homeowners to choose the 30i, whilst the awards won by Ideal for the Logic range could provide some property owners with the reassurance they need to make the C30 their choice.


Still struggling to choose? If so, our free online quote tool could help you make your choice. Alternatively, feel free to give us a call, our advisors would be happy to answer any of your questions.

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** Subject to an annual service at the customer's expense. Warranty extension from 5-years to 7-years or 10-years only available on Worcester Bosch. Warranty extension from 5-years to 10-years available on Ideal Boilers. All warranty extensions subject to an additional charge.

***Exclusions apply. See