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  • Worcester Bosch Greenstar System Boiler

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    • Worcester Bosch Greenstar System Boiler

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  • Worcester Bosch Greenstar System Boiler

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    • Worcester Bosch Greenstar System Boiler

    Updated: April 6, 2024

    What is the Worcester Bosch Greenstar System Boiler?

    the Worcester Bosch Greenstar System Boiler 24i is one of a range of highly energy-efficient A-rated gas boilers. They are rated very highly by SEDBUK 2009. Being a system boiler, the Worcester-Bosch Greenstar 24i System requires a hot water storage cylinder; however, it doesn’t require a feed and expansion cistern. This makes the Greenstar 24i a quick and easy boiler installation as well as being efficient and economical to run. What do we love about this system boiler?

    With the Worcester-Bosch Greenstar 24i, heat from exhaust gases, that would otherwise be lost through the flue, are recycled. This heat is then used as output, powering your domestic hot water and central heating with what otherwise be wasted energy. This means that the Greenstar 24i is up to 30% cheaper to run than some older boilers. We rate this boiler lower than the Viessmann because the Viessmann has a much better stainless steel heat exchanger with better reliability than the Worcester Bosch. 

    The price comes in around £1,050 on average with an installed price being around £2000. 

    The Worcester Greenstar i System is Worcester is one of the most popular wall-mounted system boiler. It has outputs up to 24kW so as a result this type of boilers are suitable for a wide range of homes. The appliance includes a steel wall-mounting jig that not only allows pipes to go behind the boiler but also the ability to pre-pipe all of the pipework prior to placing the boiler on the wall.

    The boiler can be used with a range of high efficiency Greenstore cylinders.

    Other features of the Worcester-Bosch Greenstar 24i are:

    • Low lift weight
    • Wall mounting jig providing pre-plumbing and rear piping as standard
    • Pre-wired mains cable
    • There is a single sided front case
    • A benchmark menu in boiler is provided
    • Simple boiler controls along with clear information display and a button commissioning mode
    • Plug & play accessories which include optional facia mounted controls and internal diverter valve kits
    • CondenseSure style syphon inside – risk of condensate pipe freezing eliminated
    • On-board operational information and diagnostics

    Worcester Bosch (commonly referred to as Worcester) is a United Kingdom based heating and hot water products manufacturer.

    Get an online fixed price in 20 seconds:

    Worcester Bosch

    What kind of fuel does your boiler use?

    • Mains Gas
    • LPG
    • Oil

    Main Features:

    • ERP rating: A HEAT
    • Efficiency Rating: 94%
    • Band Rating: A Rated
    • LPG Compatible: Yes
    • Standard Warranty: 5 Years
    • kW Options: 24.6 kW
    • Mounting: Wall-mounted

    Overall, with the price and efficiency, we recommend this boiler in 2nd place to the Viessmann.

    After our extensive research, going through customer reviews, looking at our own customer’s experiences, asking our Gas Safe heating engineers about fitting, reliability, etc.

    You can be sure that our information is reliable and will give you a fantastic new system boiler. 

    Can I finance my new boiler?

    What does it cost?

    Firstly, a boiler replacement can cost a huge amount of money. It can cost you between £1,500 to £3,000. It’s perfectly understandable if you don’t have that amount on hand right now.

    But worry not! You can easily get a monthly finance plan to pay for your new boiler. This plan will enable you to spread the cost over a period of time that is suitable for your budget. Moreover, you can pay for it in 2 years, 5 years or even in a decade. The choice is yours. And here lies the beauty of boiler finance.

    Who can apply for boiler finance?

    If you are over the age of 18, then you can easily apply for a new boiler pay monthly plan.

    Besides the minimum age for boiler finance applications, there is a maximum age as well. Boiler finance lenders have a policy that won’t allow you to exceed 85 by the end of your finance agreement.

    Being a UK resident for at least 3 years is also important for your application. What is equally important is having some way of earning your living. You will be approved if you are employed, on benefits or have an allowance.

    If you are planning to apply for a finance plan, then you might need to provide some form of documentation. These might include:

    • A valid UK passport or a driving license
    • A utility bill dated the last 3 months of the boiler finance application date.

    Check out Boiler Finance page to know more about the plan that we provide.

    What is meant by a Condensing Boilers?

    The terms condensing and non-condensing can be confusing to people shopping for a new boiler.

    Presently, it is stated by law that new boilers must use condensing technology. In short, you don’t have to worry about getting a condensing boiler.

    Condensing is not a type of boiler, but rather technical feature. In a Condensing boiler you get a much bigger heat exchanger. They also produce additional heat from the fuel. The same fuel that would have been wasted in a non- Condensing boiler. As a result, they are more efficient.

    non-condensing boilers are less efficient by 50% since a lot of heat was lost in the combustion exhaust gases. On the other hand, new boilers would capture this heat and use it to heat water.

    condensing boilers are energy efficient by 90%. They use excess energy to heat your property. Not to mention, they are environmentally friendly and reduce your heating bill.

    Worcester Bosch Greenstar 8000 Life Combi Boiler Review 

    Can I get the next-day boiler installation?

    Yes, if you order your boiler before 12 pm during the colder months, and 2 pm in the warmer months.

    This is next-day boiler fitting nationwide in England, Wales and Scotland. So you do not have to be without heating for long, even in the depths of winter.

    Not many boiler companies can fit a boiler at such short notice nationwide. If you need a boiler, get a quote from us as soon as possible.

    Get an online quote

    Installation energy regulations

    Over the last few years, the UK has passed some guidelines for boiler installation and energy efficiency:

    • Gas boilers should have at least a 92% ErP efficiency regardless of boiler type.
    • A Combi boiler installation should have one energy-saving feature.
    • You should have functioning time and temperature controls

    So why Let’s Heat?

    Let’s Heat Are Quality & Accredited Boiler Installers

    Firstly, Let’s Heat professional engineers and emergency plumbers provide a professional and reliable plumbing and heating service. Accordingly, that includes Boiler Installation in Cardiff and the surrounding CF postcode area in South Wales.

    Secondly, our boiler installation and repair team is fully qualified and ensured to the highest standards. As can be seen, we take pride in producing exemplary work standards which include completing all boiler installation needs. 

    Thirdly, the Let’s Heat team are high-quality professional engineers who have a high 4.9 out of 5 Trustpilot score by our previous happy customers. We are fully accredited by Gas Safe and Corgi registered, as well as FCA approved for all of our financial transactions. 

    Lastly, all of our staff at Let’s Heat are experts in their field and have many years of experience. Above all, we have work on a wide selection of emergency plumbing, heating solutions and services throughout Cardiff, the rest of Wales & the UK.

    Because we care

    Are you still a little confused about where to start or who to use?

    Our easy-to-use online questionnaire will help you with what you need to know. In short, we make sure that you have the correct solution for your needs. We will also ensure that you are completely happy with the solution.

    Why else?

    • We work in Cardiff and the surrounding areas of South Wales.
    • We are reliable, professional and trustworthy.
    • High Trustpilot score of 4.9 out of 5.
    • We can travel anywhere throughout the UK.
    • Gas Safe Accredited (corgi registered).
    • Our finance is FCA accredited.
    • We provide a 12-month snag guarantee.
    • Our prices are very competitive.
    • We make sure your house is kept clean and tidy during work.
    • Our workmen use floor protection.
    • We dispose of your rubbish correctly.


    How long should a Worcester Bosch boiler last?

    There is no exact time frame on how long your boiler would last. But the average life of a boiler is usually between 10-15 years.

    How many radiators can a Worcester 24i junior run?

    The Greenstar 24i is suitable for you if you have a hot water storage tank and want to swap an old system boiler for a new one. You can have up to 10 radiators in an average 3-4 bedroomed home.

    How do I reset my Worcester Greenstar 24i boiler?

    Press the reset button for approximately five seconds to reset the boiler. When the boiler resets the reset button will no longer be illuminated. And the mains indicator will no longer be flashing.

    Is the Worcester 24i junior A condensing boiler?

    Designed and manufactured by Worcester Bosch, the Greenstar 24i Junior is a hugely reliable condensing combi gas boiler. It is perfect for medium-sized homes.

    How much is a Worcester 24i junior?

    A Greenstar 24i Junior would typically cost £767.39. And a Greenstar 28i Junior would typically cost £854.88.

    How do you turn on a Worcester Greenstar 24i Junior?

    Set the room thermostat to maximum. And then turn the central heating temperature control knob fully clockwise. As a result, the burner will light and the red flame detection indicator will light. Set the central heating temperature control knob and the room thermostat, if fitted, to the desired temperature.