One of the most popular and well known brand on the market, Worcester Bosch have a reputation for manufacturing high quality gas, LPG and oil boilers. Now part of the Bosch Group, for more than 50 years they have remained committed to delivering reliable and efficient central heating products at keen prices.
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Worcester boilers frequently feature in best boiler surveys and have repeatedly achieved Which? best buy status for their Greenstar boiler range, combining brand reliability and owner satisfaction.
They are market leaders in high efficiency, condensing boiler technology. The company has built up a well-respected name since its beginnings in 1962, when they originally pioneered domestic oil-fired boilers.
Bosch is now one of the world’s leading names in high end technology, and one of the UK’s market leaders in the heating industry. It’s a name that stands for reliability, quality, efficiency and value for money with their competitively priced range of boilers.
If you’re looking to replace your broken or inefficient boiler, we’ll take you through the costs, savings and benefits associated with the popular range of Worcester Bosch combi boilers, as well as the lesser known models for comparison.
We can also offer up to 3 free no-obligation quotes from Gas Safe Registered heating engineers local to you. Whether you want a combi, regular or system boiler, there is a Worcester boiler to suit your home heating needs and your pocket ranging from 12kW output to 42kW.
Get quotes for a new Worcester Bosch boiler.
Worcester Bosch boiler types: Combi – Regular – System
The range of Worcester Bosch boilers are available in the following fuel types: Gas – Oil
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The Greenstar Range
The multi award winning Greenstar range belongs to the highly successful Bosch group.
Worcester Greenstar has an extensive range of gas, LPG and oil-fired boilers, which are all A-rated, high-efficiency, condensing models. The products are designed to deliver heating and hot water comfort to households, as well as helping to reduce your fuel bills and carbon footprint.
Worcester Greenstar boasts multi award winning boilers having won CORGI’s Domestic Heating Product of the Year, which is voted for by installers, for three years running. The range includes floor-standing models, gas-fired boilers and a wall-mounted series, making installation easier. Every boiler is rigorously tested before it leaves the factory, to ensure it is fit for everyday use.
The combi boilers provide heating and hot water directly from the boiler, while regular and system boilers heat your central heating system and produce hot water for your cylinder.
All gas, oil and LPG boilers by Greenstar run at 90 per cent efficiency. Greenstar boilers are within class five – the lowest of the five categories – for NOx (Nitrogen Oxide) emissions. A Worcester condensing boiler also delivers dramatically reduced emissions of both CO2 and NOx, helping in the battle against climate change.
Worcester Bosch also utilises renewable technologies producing ground source heat pumps and air source heat pumps.
Worcester Bosch Combi Boilers & Prices
They were the pioneer of the combi boiler in the UK, with the Greenstar range developed to suit virtually all homes.
Worcester Bosch combi boilers are both a high efficiency water (A-rated) heater and a central heating boiler in a single compact unit.
They are cost effective and energy efficient as water is heated instantly rather than being heated and then stored in a cylinder.
All Greenstar combis are designed and manufactured to provide high levels of performance and operating efficiency with their ’keep hot’ facility which ensures that hot water is almost instantly available whenever it’s required.
The boilers also incorporate a special ‘ECO’ mode button which can be used to override the ‘keep hot’ facility – thereby using less gas, as energy is only used when hot water is required.
For added efficiency, models such as the Greenstar CDI Classic, Greenstar CDi Compact and Greenstar Si Compact condense in both hot water and heating modes.
Benefits of a Worcester Bosch Combi boiler
- Compact sizes make combi boilers perfect for smaller properties
- Ideal where there is little or no loft space
- No need for a hot water cylinder allows increased living space
- No cold water storage tank frees up a loft for conversion
- No risk of loft pipework freezing
- Less pipework in the home makes installation typically cheaper.
Compare the Costs of Worcester Combi Boilers
The top of the range Greenstar CDI Classic combi boilers are high performance boilers suitable for small, medium and large sized properties with one or two bathrooms. Known for their exceptional efficiency and reliability, they are wall-mounted and offer the highest levels of hot water comfort. Get quotes for a new Worcester Bosch boiler.
Review the complete range of Worcester Gas Combi boilers prices…
Greenstar CDi Compact Series
These wall mounted boilers have the smallest dimensions of all the combi boilers and can fit inside a standard kitchen cupboard. Despite their small size, their high outputs make them suitable for properties with more than one bathroom.
Greenstar Si Compact Series
Suitable for small to medium sized properties the Greenstar Si Compact combis can be wall-mounted in a variety of locations including a standard kitchen cupboard, utility room and airing cupboard. This Si Compact is fitted with frost protection so can also be fitted in a garage or loft.
Greenstar i Series
The successor to the popular i Junior series which represent 1 in 10 of all boilers installed in the UK. These wall-mounted boilers are ideal for apartments and small to medium sized properties with one bathroom.
Greenstar Highflow CDi Series
These floor-standing combi boilers have been developed especially for larger two bathroom properties where there is a higher heating and hot water output demand. Worcester is the only company that produces a combi boiler of this kind.
Worcester Greenstar System Boilers & Prices
Worcester system boilers are ultra-efficient and economical to run. System boilers require a cylinder for storing hot water, however the major heating and hot water system components are built into the boiler itself, making it quicker and easier to install.
There is no need for a tank in the loft, so a good option for homes with little or no loft space.
The compact size of the Greenstar i System boilers means that they can fit perfectly into many locations – including a standard kitchen cupboard.
These boilers are also compatible with Worcester solar thermal systems, which deliver environmental benefits as well as lower energy bills.
Benefits of a Worcester System boiler
- Ideal for homes with more than one bathroom
- Hot water supplied evenly to all taps at the same time
- No risk of pipes or tanks in the loft leaking or freezing
- Energy efficient for lower fuel bills
- Built-in components makes installation quicker and neater.
Review the Pricing of Worcester System Boilers
The wall-mounted Greenstar CDI Classic System series are high performance, high efficiency boilers that suit bigger homes with larger heating and hot water needs. Get quotes for a new Worcester Bosch boiler.
Compare the complete range of Worcester Gas System boilers prices…
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
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| Worcester Bosch Greenstar 30CDi Classic System Gas Boiler | 30 kw | 89.50% | 2 years | £1155 | |
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| Worcester Bosch Greenstar 24i System Gas Boiler | 24kw | 89.20% | 2 years | £976 | |
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| Worcester Bosch Greenstar 12i System Gas Boiler | 12kw | 90.10% | 2 years | £827 | |
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| Worcester Bosch Greenstar 9i System Gas Boiler | 9kw | 93% | 5 years | £808 | |
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| Worcester Bosch Greenstar 15i System Gas Boiler | 15kw | 90.1% | 5 years | £870 | |
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| Worcester Bosch Greenstar 18i System Gas Boiler | 18kw | 90.1% | 5 years | £924 | |
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| Worcester Bosch Greenstar 21i System Gas Boiler | 21kw | 90.1% | 5 years | £982 | |
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| Worcester Bosch Greenstar 27i System Gas Boiler | 27kw | 90.3% | 5 years | £981 | |
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| Worcester Bosch Greenstar 30i System Gas Boiler | 30kw | 90.3% | 5 years | £1112 | |
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| Worcester Bosch Greenstar 35CDi Classic System Gas Boiler | 35kw | 89.50% | 2 years | £1187 | |
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| Worcester Bosch GB162 50kW System Gas Boiler | 50kw | 95.9% | 2 years | £1918 | |
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| Worcester Bosch GB162 65kW System Gas Boiler | 65kw | 90.4% | 2 years | £2364 | |
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Worcester Bosch Greenstar i System Series
The updated ultra-efficient Greenstar i System series are Worcester’s most popular wall mounted system boilers and replaces the old i system series. They offer flexibility and can be installed in a number of locations.
Worcester Bosch Greenstar i Compact System Series
The 27kW and 30kW Greenstar I System boilers are a new generation of smaller and lighter wall-mounted boilers – suitable for small, medium and large homes. Incorporating all the benefits of the Greenstar I system series but offer higher heating output options to suit homes where demand is greater.
Worcester Greenstar Regular Boilers & Prices
The Worcester Regular boilers are ideally suited for homes that already have a traditional heating and hot water system which is linked to a separate hot water cylinder.
These boilers also need a cold water storage tank in the loft to feed the hot water cylinder as well as a tank that maintains the water level of the central heating system.
The compact size and smart design of Greenstar regular boilers means that they will look great in any home, with several options readily fitting into a standard kitchen cupboard.
Benefits of a Worcester Regular Boiler
- Perfect for homes where a lot of hot water is used at the same time
- Ideal where there are two or more bathrooms
- A good option in areas where water pressure is low
- Compatible with older pipework and radiators
- Options for very compact spaces
- Simple and straight forward installation
A Price Comparison of Worcester Regular Boilers
These top performing, wall mounted boilers have impressive heating outputs making them an excellent choice for larger properties. The CDI Classic has set the heating industry benchmark for efficiency, helping to reduce gas bills. Get quotes for a new Worcester Bosch boiler.
Review the complete range of Worcester Gas Regular boilers prices…
Worcester Bosch Greenstar Ri Series
These compact, wall-mounted boilers are small enough to be installed in a standard kitchen cupboard and are a great option for small and medium sized homes. The higher output wall-mounted Greenstar Ri 27kW and 30kW boilers meet all the heating and high water needs of medium to large properties Frost protection is also included on the Ri, reducing frost risk if installed in a garage or loft.
Worcester Combi Oil-Fired Boilers & Prices
The high performance floor-standing Greenstar Heatslave II series is the UK’s most popular oil-fired combi boiler.
With its sleek modern design, it is perfectly suited to installation anywhere in your home, including in a kitchen where it has been designed to slide neatly under a standard kitchen work top.
The Greenstar Heatslave II External series is ideal when you want a combi boiler but dont have the indoor space or prefer to have it outside.
The robust design ensures that even in harsh weather conditions, heating performance is maintained and the boiler components are fully protected.
Benefits of a Heatslave II Combi Oil-Fired Boiler
- Heating and hot water from one unit
- Thermal store allows high volumes of instant hot water
- Frees up space, no need for separate pump or tanks
- Compatible with a wide range of controls
- No risk of frozen pipes or tanks, or leaks in the loft
- Less components and pipework usually means faster installation
Compare the Pricing of Heatslave II Combi Oil-Fired Boilers
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Review the complete range of Worcester Combi Oil-Fired boilers prices…
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
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| Worcester Bosch Greenstar Heatslave External 32 Combi Oil Boiler | 32kw | 90.3 | 5 years | £2564 | |
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| Worcester Bosch Greenstar Heatslave II 18 Combi Oil Boiler | 18 kw | 89.40% | 2 years | £2196 | |
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| Worcester Bosch Greenstar Heatslave II 25 Combi Oil Boiler | 25kw | 89.2 | 2 years | £2252 | |
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| Worcester Bosch Greenstar Heatslave II 32 Combi Oil Boiler | 32kw | 89% | 2 years | £2470 | |
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| Worcester Bosch Greenstar Heatslave II External 25 Combi Oil Boiler | 25kw | 89.2% | 2 years | £1895 | |
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| Worcester Bosch Greenstar Heatslave II External 32 Combi Oil Boiler | 32kw | 89% | 2 years | £2586 | |
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| Worcester Bosch Greenstar Heatslave II External 18kW Combi Oil Boiler | 18kw | 89.4% | 2 years | £1797 | |
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Worcester System Oil-Fired Boilers & Prices
The compact and highly efficient Greenstar Danesmoor System is ideal for small, medium and large sized homes with heating system that includes stored hot water.
With the Danesmoor Utility series the heating temperature control and system pressure guage are positioned behind the front panel.
If space in the home is at a premium then the high efficiency Danesmoor System External series is a perfect choice as it is contained in a robust cabinet that protects the boiler in all weathers.
Benefits of a Greenstar Danesmoor System Oil-Fired Boiler
- Hot water supplied evenly to all taps at the same time
- Optional plug-in control (Danesmoor System Series)
- Energy efficient for lower fuel bills
- No need for separate pump and loft tanks
- Comaptible with Greenskies solar hot water systems
A Price Review: Greenstar Danesmoor System Oil-Fired Boilers
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Compare the complete range of Worcester Oil System boilers prices…
Worcester Regular Oil-Fired Boilers & Prices
With over 90% efficiency, Greenstar regular boilers will help reduce your energy bills and your carbon footprint.
They can enhance heating and hot water performance in all sizes of homes, including those with two or more bathrooms, and where mains water pressure is low.
For added choice Greenstar regular boilers come in a wide range of models.
They are also designed to be installed in a range of indoor and outdoor locations and are suited to a variety of heating requirements.
Benefits of a Greenstar Danesmoor Regular Oil-Fired Boiler
- Compatible with older pipework and radiators
- Options for very compact spaces
- Ideal for properties with multiple bathrooms
- Simple and straightforward installation
- Compatible with Greenskies solar hot water systems
The Price of a Greenstar Danesmoor Regular Oil-Fired Boilers
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View the complete range of Worcester Oil Regular boilers prices…
Worcester Bosch in the Forum & Articles Section
- Forum: Worcester Boilers. Specific questions around gas, oil and LPG boilers manufactured by Worcester Bosch.
- Article: Worcester Greenstar wins best boiler Which? award
- Thread: Worcester Greenstar 30cdi rumbling
- Thread: Danesmoor won’t start
- Thread: Heatslave 15/19 hot water problem
- Thread: Worcester Heatslave 12/14 oil combi locking out after 4 1/2 mins
- Thread: Greenstar 24i coming on at random times
- Thread: Worcester Greenstar cdi Classic fault code C6
- Thread: Worcester 28SI ii no heat or water after a short time
- Thread: Worcester 24i rsf not firing up
- Thread: Banging clunking noise from Worcester Greenstar 28i Junior
- Worcester Bosch Boiler Error Codes
