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    Worcester Bosch Greenstar i System Boilers

    The average price of a Worcester Bosch Greenstar i System Boiler is between £861.78 and £1,090.13 including VAT and excluding installation.

    Worcester Bosch Greenstar i System Boilers

    Designed for domestic properties with a cylinder for storing hot water, the Greenstar i System is a great solution for homes where a cold water tank is not installed.

    It measures 710mm (H) x 400mm (W) x 330mm (D) and is available in eight outputs from 9kW to 30kW. Plus, this fairly small wall-hung boiler is fuel efficient and can be used in conjunction with Greenskies solar panels for better user comfort and economy.

    Ideal for small to medium-sized homes, Worcester Bosch’s Greenstar i System comes with a standard 5-year manufacturer warranty and will set you back anything between £861.78 and £1,090.13 depending on the chosen output.

    Boiler Energy Efficiency Credentials

    The Greenstar i System boasts 90.1% efficiency and has achieved a SEDBUK A rating. It is actually Energy Saving Trust recommended and up to 30% cheaper to run than older models. This means that this boiler will reduce carbon emissions and cut your energy bills. It features a Heatronic III control so that you can adjust the flow temperature and is compatible with Greenskies solar panels and Greenstore cylinders, all of which help to lower your energy bills even further. The boiler can also be used with Worcester’s intelligent controls for greater comfort and fuel savings. In addition to all of that, this boiler has low NOx and CO2 emissions, so it’s much kinder to the environment.

    Greenstar i System Technology and Main Advantages

    This Worcester Bosch system boiler has a large condensate siphon to minimise the risk of frost damage, as well as a low energy pump to reduce electrical usage. Other built-in components include an expansion vessel, pressure relief valve and pressure gauge, and the casing is made from silicon and aluminium.

    When it comes to the using the boiler at home, you should be able to operate and adjust the appliance with ease thanks to the simple controls and clear information display. A steel wall-mounting frame is also included so that your engineer can fit the pipework before installing the boiler on the wall and ensure the pipes stay neatly tucked behind the unit.

    If you want to boost fuel savings and adjust the temperature with minimal effort, you can purchase and use a wide range of optional digital programmers, room thermostats, wireless programmers and intelligent controls as well.

    Is the Greenstar i System the Right Boiler Type and Size for Your Home?

    As there are eight outputs in the Worcester Bosch Greenstar i System range, there is a solution for every small and medium-sized home. The Greenstar 9i, 12i and 15i are best for smaller apartments, bungalows and houses with more than 1 bathroom, whereas the Greenstar 18i, 21i and 24i are suitable for slightly larger properties in need of a constant supply of hot water to multiple taps at the same time. Not forgetting the 27i and 30i, both of which are ideal for medium to large houses. We must stress that this information is to be used as a rough guide, and you should always ask a Gas Safe engineer to help you determine which boiler output is right for your household and needs.


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    Compact and lightweightCan be placed almost anywhere in the home
    A-rated conventional boilerSave money on your gas bill
    Features Heatronic III control systemSimple boiler management and improves energy efficiency
    Compatible with Greenskies solar panels and intelligent controlsAlternative energy and cost savings option
    Hot water temperature controlEnd-user comfort and convenience
    Low NOx and CO2 emissionsEnvironmentally friendly
    5-year parts and labour warrantyConfidence and peace of mind

    Our Honest Opinion of the Worcester Bosch Greenstar i System

    Fuel efficient and economical to run, the Worcester Bosch Greenstar i System is a powerful boiler that is capable of meeting high heating and hot water demands. It is one of the top-selling boilers on the market today, and there is an option available to suit most small, medium and large-sized dwellings.

    The boiler features many built-in components to benefit the end-user and make installation quick, easy and tidy. By being quite small, it can be sited in a number of places within your home – and you don’t even need a cold water tank in your loft. And by having low NOx and CO2 emissions, this appliance will help you reduce your carbon footprint.

    Don’t forget, you can also increase environmental benefits and save even more money when you opt for some of the optional controls and a solar water heating system. Since this boiler is known for its reliability and excellent performance, we think you’ll struggle to find fault with the Greenstar i System.

    Advice on Boiler Quotes and Gas Safe Engineers

    If you would like a free quote on the Worcester Bosch Greenstar i System, we welcome you to use our hassle-free quote engine. But before you go, we should remind you that it’s best to get quotes from both local and national installers to ensure you receive the best deal available. And don’t be afraid to ask for a fixed price so that you aren’t faced with any hidden charges in the future. You must also make sure your chosen engineer is legally permitted to work on gas boilers, which you can check by asking to view their Gas Safe ID card or looking them up at the Gas Safe Register website.


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