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    Worcester Bosch Greenstar CDi Classic Combi Boilers

    The average price of a Worcester Bosch Greenstar CDi Classic Combi Boiler ranges between £1,114.24 and £1,702.06 including VAT and excluding installation.

    Worcester Bosch Greenstar CDi Classic Combi Boilers

    Offering the highest levels of hot water comfort, the Worcester Bosch Greenstar CDi Classic Combi is the brand’s top of the range combi boiler.

    It measures in at 760mm (H) x 440mm (W) x 360mm (D) and features various smart functions for greater economy and end-user comfort. This appliance is available in four different heating outputs including 29kW, 34kW, 38kW and a very powerful 42kW. Although suitable for hanging on a wall and being sited in various locations of the home, it will not fit in a standard kitchen cupboard.

    The Greenstar CDi Classic Combi is ideal for various property types with spacious rooms and high ceilings and comes with not only a 5-year manufacturer warranty but also a 10-year guarantee on the primary heat exchanger. You will need to spend anything between £1,114.24 and £1,702.06 on this appliance, and the exact price will depend on which output level you choose.

    Boiler Energy Efficiency Credentials

    Awarded a SEDBUK efficiency rating of 92%, the Greenstar CDi Classic Combi by Worcester Bosch is an A-rated boiler and fully compliant with the latest ErP (Energy-related Products) Directive. Since it’s in the highest band for efficiency, it’s also Energy Saving Trust recommended. This model is so efficient, in fact, it has set the benchmark within the boiler industry. The appliance comes with a low energy modulating pump to reduce electrical usage by 30% and is compatible with a varied selection of optional controls to increase efficiency, user comfort and fuel savings.

    Greenstar CDi Classic Combi Technology and Main Advantages

    This feature-rich combi boiler boasts a large condensate siphon to minimise frost risk and keyless filling link for easy refilling purposes. It also has a smart standby mode which enables the boiler to reduce its electrical output to 3.5W to maximise efficiency and, as a result, lower your energy bills.

    The Greenstar CDi Classic Combi range includes four output sizes with different maximum hot water flow rates, which are as follows:

    • Greenstar 29CDi Classic Combi – 12.3 litres per minute
    • Greenstar 34CDi Classic Combi – 14.3 litres per minute
    • Greenstar 38CDi Classic Combi – 16.4 litres per minute
    • Greenstar 42CDi Classic Combi – 17.1 litres per minute

    There is a standard ‘keep hot’ facility so that you always have access to instant hot water, along with a low energy pump to minimise electrical usage. It comes with a wall-mounting jig and frame to keep installation simple and so that the pipes can stay hidden behind the appliance. This combi also features decent control knobs and a clear temperature display to ensure you don’t have any difficulty operating and adjusting the boiler.

    Is the Greenstar CDi Classic Combi the Right Boiler Type and Size for Your Home?

    Worcester Bosch’s Greenstar CDi Classic Combi will suit a range of property types and sizes because it offers four heating outputs and maximum hot water flow rates. The 29CDi is perfect for a small to medium-size home with up to 10 radiators, 1 bathroom and 1 ensuite, whereas the 34CDi and 38CDi will be best if you have a medium to large home with 12 radiators and 2 family bathrooms. As for the mighty 42CDi, this boiler can heat up to 14 radiators and provide plenty of hot water to multiple bathrooms, making it ideal for a larger home. To determine which output is right for your property, you must seek professional advice from a Gas Safe engineer before purchasing this model.


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    A-rated combi boiler Save money on your gas bill
    Standby electrical output of 3.5WMore energy efficient and energy savings
    ‘Keep Hot’ function Ultimate end-user comfort
    Hot water temperature controlEnd-user comfort and convenience
    Low NOx and CO2 emissionsEnvironmentally friendly
    Compatible with intelligent controlsSaves time and costs
    5-year parts and labour warrantyConfidence and peace of mind
    10-year guarantee on heat exchangerExtra peace of mind

    Our Honest Opinion of the Worcester Bosch Greenstar CDi Classic Combi

    Ranging from 29kW to 42kW and with flow rates between 12.3 and 17.1 litres, Worcester’s Greenstar CDi Classic Combi is a fabulous choice for most small, medium and large properties. It will provide heating and hot water on demand without the need for a water tank or cylinder, meaning this boiler is also a practical solution for homes that are short on storage space.

    You’ll also be pleased to know that this combi is a highly efficient and environmentally friendly boiler with low NOx and CO2 emissions. So, not only will you save money on your energy bills with this combi but you will also be doing your bit for the environment.

    The unit itself isn’t the smallest but it does have a fantastic assortment of controls, functions and special features to make up for it. And although the boiler is set up for natural gas, it can be configured to run on LPG (liquefied petroleum gas).

    Advice on Boiler Quotes and Gas Safe Engineers

    If you would like a competitve quote on the Worcester Bosch Greenstar CDi Classic Combi, please don’t hesitate to use our free quote engine. Remember – always ask for a fixed price on the boiler and fitting costs to ensure you get a great deal and check whether your chosen installer is legally permitted to carry out gas work. All you need to do is ask to view their Gas Safe ID card or enter their registration number into the Gas Safe Register online.


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    One thought on “Greenstar CDi Classic Combi

    1. How much is the general cost of installation of a Greenstar 38 CDI Classic Combi boiler?

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