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Worcester Bosch Boilers: Prices + Pros & Cons (2025)
- Worcester boilers cost between £600 and £3,800 and depend on the boiler type, its output, and home modifications needed.
- Worcester Bosch Greenstar range is available for combi, system, and regular boiler types, offering models for gas, LPG, and oil.
- Worcester boilers are known for their exceptional efficiency and reliability. However, their upfront cost is less budget-friendly than that of other brands.
Do you want to buy a Worcester Bosch boiler? Good plan. Established in the 1960s, the company has a long history of delivering A-class boiler service and achieving high customer satisfaction scores.
Yet Worcester Bosch boiler prices are far from being budget-friendly, so it's wise to carefully compare different Worcester boilers within their range and the savings they might bring in the long run.
This guide covers Worcester Bosch boiler prices in the UK as well as Worcester boilers' prominent models and their pros and cons. Yet, you need a trustworthy installer to make the most out of your investment. Easier said than done –you can spend hours or even days researching and comparing quotes before finding the best deal.
Why not leave the time-consuming searching to us? In just a few clicks, you can get up to 3 boiler quotes and save hours on research. Complete our short form below and we'll connect you with boiler installers near you.
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Worcester Bosch boiler models
Worcester combi boiler range
Worcester combi boilers usually cost £935–£4,000 and are represented with the following models:
| Model name | Output range (kW) | Efficiency | Suitable for | Key features |
|---|---|---|---|---|
| Greenstar 2000 | 25, 30 | A (94%) | Small homes/flats with 6-8 radiators, 1 bathroom | Quiet operation (43 dB), fits kitchen cupboard, digital display |
| Greenstar 4000 | 25, 30 | A (94%) | Small to medium homes, up to 10 radiators | Bosch EasyControl compatible, quiet operation (42 dB), frost protection |
| Greenstar 8000+ | 32, 36, 40, 45, 50 | A+ (94%) | Medium/large homes, multiple bathrooms | Intelligent filling System, up to 12-year warranty |
| Greenstar 8000+ Style | 32, 36 | A+ (94%) | Medium/large homes, multiple bathrooms | Full touch colour screen, high flow rates (up to 20.3 l/min) |
| Greenstar CDi Highflow | 29.5, 41.1 | A (92%) | Large homes, high hot water demand | Floor-standing, high flow rates (19l/min) |
| Greenstar CDi Compact | 28, 32, 36 | A (94%) | Small/medium homes with 1-2 bathrooms | 19-25 l/min flow rate, frost protection |
| Greenstar Heatslave II External (oil) | 12/18, 18/25, 25/32 | A | External installations, rural properties | Weatherproof cabinet, 22 l/min DHW, cross-firing burner |
| Greenstar Heatslave II Internal (oil) | 12/18 | A | Indoor oil combi installations | Dual water models, child lock |
Worcester Bosch combi boilers, such as Greenstar 2000, 4000, 8000+ Combi/Style are known for their high efficiency (up to 94%), quiet operation and compact size and are often listed as the best combi boilers on the market.
Worcester combi boiler prices are higher than those of their competitors, but the company makes up for that by providing a higher modulation ratio (1:10 compared to 1:5–1:7 of other brands), longer warranties (up to 12 years), and an aluminium-silicon alloy heat exchanger.
Compared to common stainless steel heat exchangers, which offer thermal conductivity of 14-25W/m·K, aluminium-silicon alloy ones boast a much higher thermal conductivity of 237W/m·K. This means they can reach operating temperatures more quickly. They are also corrosion-resistant and lighter, which explains why Worcester Bosch boilers are lightweight and easy to install.
Worcester Bosch system boiler range
Worcester Bosch system boilers cost around £900–£4,000 and come in the following model range:
| Model name | Output range (kW) | Efficiency | Suitable for | Key features |
|---|---|---|---|---|
| Greenstar i System Compact | 27, 30 | A (92%) | Medium/large homes, high hot water demand | Fits kitchen cupboard, works with solar panels, low energy draw |
| Greenstar 4000 | 12, 15, 18, 21, 24 | A (94%) | Small/medium homes, multiple bathrooms | Bosch EasyControl, quietest WB system (42dB), aluminium-silicon heat exchanger |
| Greenstar 8000+ | 30, 35 | A+ (94%) | Large homes, multiple bathrooms | Weather compensation, compatible with Greenstore cylinders, A+ efficiency |
| Condens 7000 WP | 50, 65 (domestic), 85, 100, 125, 145 (commercial) | A (93–97%) | Multi-residence complexes, commercial buildings (offices, hotels, schools) | ALU-Plus aluminium-silicon heat exchanger, option to connect up to 8 GB162 boilers to create a cascade system, low NOx emissions |
| Greenstar Danesmoor Utility (oil) | 12/18, 18/25, 25/32 | A (90-94%) | Medium/large homes | Compact design (855mm height), concealed controls, solar thermal compatibility |
| Greenstar Danesmoor External (oil) | 12/18, 18/25, 25/32 | A (90-94%) | Outdoor installations, off-grid properties | IP45 weatherproof casing, frost protection, solar compatibility |
Unlike other brands, Worcester Bosch system boiler models come pre-wired and pre-plumbed for easier and quicker installation. Apart from the common built-in pumps and anti-frost protection features, Worcester system boilers have a condensate syphon for freeze resistance.
An option to integrate a diverter valve kit allows for digital hot water cylinder temperature control. These boilers are also directly compatible with Greenskies solar panels and come with solar-ready controls.
Multiple Worcester Bosch Condense 7000 WP boilers (up to 8) can be installed together in a modular arrangement (called a cascade system) to from a high-output heating system, being able to achieve a heating capacity of up to 1,600kW. This is partially beneficial for very large buildings or complexes looking for the most efficient boilers, forming a single, powerful and flexible heating system.
Worcester boiler regular boiler range
Worcester regular boilers cost around £800–£3,600 and come in the following model range.
| Model name | Output range (kW) | Efficiency | Suitable for | Key features |
|---|---|---|---|---|
| Greenstar Ri | 12, 15, 18, 21, 24, 27, 30 | A (up to 93%) | Medium/large homes, traditional systems | Fits kitchen cupboard, up to 10-year warranty, compatible with solar modules |
| Greenstar 8000+ Regular | 30, 35, 40, 45, 50 | A+ (94%) | Large homes, high hot water demand | Floor-standing, integrated pump and controls |
| Greenstar Danesmoor Utility (oil) | 12/18, 18/25, 25/32 | A | Medium/large homes, 1-3 bathrooms | Can be integrated with solar panels, waterproof casing (external), and outdoor/indoor options |
| Greenstar CDi FS | 30, 42 | A (up to 92%) | Large homes, multiple bathrooms, and replacement for older floor-standing boilers | Floor-standing, patented WB5 aluminium-silicon heat exchanger, Condensfit II™ flue systems, solar compatible |
| Greenstar Utility (oil) | 32/50, 50/70 | A (93-94%) | Large homes, light commercial properties | Concealed controls, solar thermal compatibility |
| Greenstar Danesmoor External (oil) | 12/18, 18/25, 25/32 | A (90-94%) | Medium/large homes, outdoor installations | Weatherproof cabinet, frost protection |
Regular boilers from Worcester Bosch are fully compatible with previous brand pipework for easier upgrades. They are compatible with unvented and vented cylinders, with Ri and Danesmoor models being solar thermal compatible.
Worcester regular models are among the quietest in the segment, with noise levels typically not exceeding 45–50 dB.
The Greenstar Danesmoor oil-fired boiler models can be wall- or floor-mounted and come with external waterproof casing, a feature that isn't represented in competitor's regular model range.
The Greenstar CDi FS boiler can be installed in various building layouts thanks to its Condensfit II™ flue system, which allows for the pipe to vent exhaust gases either through a wall or a roof. This system can even be adapted for use with existing chimneys, which simplifies boiler installation for older homes.
Such a vast variety of boilers to choose from can be overwhelming. In order to make the right choice, it's best if you talk to a certified installer to know the new boiler cost for your home. Not sure where and how to find such a professional?
Our quote service can cut the days of googling and calling heating engineers up to 48 hours.
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Worcester boiler prices in 2025
New Worcester boiler cost ranges between £800–£4,000 for their combi, system, and regular boilers, with installation costs of £3,300 – £3,800.
GreenMatch has researched the latest prices for Worcester Bosch boiler models available in 2025:
| Model name | Supply cost | Average cost inc installation |
|---|---|---|
| Combi | ||
| Greenstar 2000 | £935–£960 | £1,935–£2,960 |
| Greenstar i | £1,560–£2,000 | £2,560–£4,000 |
| Greenstar 4000 | £1,120–£1,300 | £2,120–£3,300 |
| Greenstar 8000 Life | £2,000–£2,100 | £3,000–£4,100 |
| Greestar 8000 Style | £1,270–£2,200 | £2,270–£4,200 |
| Greenstar Highflow CDi | £2,000–£2,500 | £4,000–£4,500 |
| Greenstar CDi Compact | £1,350–£1,730 | £2,350–£3,730 |
| Greenstar Heatslave II External (oil) | £3,600–£4,000 | £4,600–£6,000 |
| Greenstar Heatslave II Internal (oil) | £3,500–£3,900 | £4,500–£5,900 |
| System | ||
| Greenstar i | £900–£1,580 | £1,900–£3,580 |
| Greenstar 4000 | £1,220–£1,480 | £2,220–£3,480 |
| Greenstar 8000 Life | £1,200–£1,350 | £2,200–£3,350 |
| Greenstar 8000 Style | £1,330–£1,900 | £2,330–£3,900 |
| GB162 | £2,000–£3,730 | £3,000–£5,730 |
| Greenstar Danesmoor Utility (oil) | £2,300–£3,500 | £4,300–£5,500 |
| Greenstar Danesmoor External (oil) | £3,000–£4,000 | £4,000–£6,000 |
| Regular | ||
| Greenstar Ri | £800–£1,080 | £1,800–£3,080 |
| Greenstar 8000 Life | £1,250–£2,200 | £2,250–£4,200 |
| Greenstar Danesmoor (Oil) | £1,770–£2,750 | £2,770–£4,750 |
| Greenstar FS CDi | £1,580–£2,050 | £2,580–£4,050 |
| Greenstar Utility (oil) | £3,200–£3,600 | £4,200–£5,600 |
| Greenstar Danesmoor External (oil) | £3,000–£3,300 | £4,000–£5,300 |
The supply and installation prices we've provided are not set in stone and can change by the time you decide to consider a Worcester boiler for your home.
It's best to talk to a qualified installer to see whether your property needs any other modifications such as piping, flue systems, or additional controls, because they all affect the final price.
You can discuss the type of boiler you choose, whether you seek direct replacement, wish to relocate your boiler, or would like to pair your boiler with a heat pump or solar panels.
Installation, servicing and financing of Worcester boilers
Installing Worcester boilers isn't much different from installing any other boilers and usually ranges between £1,800–£5,730. Worcester Bosch boilers are more expensive and the total largely depends on the type of boiler or geographical location as labour fees are usually higher in urban areas like London.
Additionally, the final installation price depends on any pipework, flue systems, controls modifications or your individual preferences.
Installation and financing of Worcester Boilers
Worcester Bosch has its dedicated network of accredited installers – FastTrack program – which includes labour and equipment under a fixed-rate structure. When booking a gas boiler installation within the FastTrack program, you get a pre-installation survey, which eliminates the need to search for a boiler engineer on your own.
For example, installing a Greenstar 2000 30kW combi boiler within this program costs around £2,400 with financing options of £24.18 per month available (including 10.9% APR, VAT and installation). The price includes a new Greenstar 2000 boiler, a flue kit, system filter and cleanse, boiler controls and full installation. By participating in such a program, the boiler can be installed even within 48 hours after you accept the quote, and you also qualify for a maximum warranty of 12 years.
The FastTrack program is particularly attractive to those homeowners who aren't willing to (or can't) wait for days or weeks for a standard installation. To qualify for this program, you must be a UK resident, 18+ years of age, including pensioners or self-employed individuals. While checking your eligibility, your repayment capacity will be determined through broker networks.
Servicing Worcester boilers
There's a Worcester Maintenance & Support Plan for boilers under 12 years old, and it offers annual servicing and repair coverage up to £1,500. It costs £60 to join with a £7 monthly fee, and it includes the following services:
| Service | Description | Cost |
|---|---|---|
| Fixed Price Repair | Product repair, spare parts (with a 12-month guarantee), combustion analysis, and additional related visits within 30 days. Landlord Gas Safety checks, flue systems repairs, external tanks or cylinder repairs are not included. | £368–£454 |
| Fixed Price Repair & Annual Service | Same as above + Cleaning of Worcester system filters, annual boiler service | £397–£505 |
| Investigation & Fault Analysis | Diagnosis of repair or fault without fitting any parts | £224 |
| Annual service | Annual boiler service, Seals, gaskets or rings and any spare parts covered by the warranty | £169–£193 |
| In guarantee Fixed Price Service & Repair | Manufacturer defect parts replacements, cleaning of Worcester system filters. The manufacturer's guarantee is reinstated for 12 months from the date of the visit | £297 |
| Aborted/Cancelled Call | Used when the engineer cannot access the property or when the call isn't cancelled before the cancellation deadlineUsed when the product is not a Worcester Bosch boiler | £117 |
| Fixed Cost Repair (when the Primary Heat Exchanger is under guarantee) | Used when the primary Heat exchanger, which is covered under a part-only guarantee, is changed as part of the services on a combi boiler | £224 |
| Ongoing Labour Charge | Used when the boiler can't be repaired within the first visit or when additional labour is needed | £104/hour |
While these servicing prices offer manufacturer transparency, they might not meet some homeowners' budgets. This is when consulting engineers outside Worcester Bosch's network is a good idea.
Is this something you would prefer? With our help, you can avoid spending hours on the internet and then on the phone calling the installers and comparing their fees.
Complete our form below, and within 48 hours, GreenMatch will connect you with up to 3 vetted boiler installers from our network. Compare their free, non-binding quotes to see if there's one that meets your budget.
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Pros and cons of Worcester Bosch boilers
- Sleek aesthetics: For visible placements, 8000+ Style models come in glossy black finish. Worcester boilers suit in-cupboard installations as well, being available in 340mm wide and 365mm deep models.
- Quiet operation: The boiler noise below 50db is a standard (and award-winning) noise level for boilers Worcester produces. Greenstar 4000 and the Greenstar 2000 combi produce 42db and 43dB, respectively (compared to competitors' 43-49dB).
- Hydrogen readiness: Worcester Bosch boilers don't need to be retrofitted for hydrogen compatibility, as they are engineered to operate with 20% hydrogen-blended gas.
- Extended warranties: When installed by the Worcester-accredited installers, the company offers a 10-year warranty, which can be extended to 12 years through select providers.
- Smart home integration: The Greenstar 4000 series can integrate with remote temperature management systems and voice commands, such as Bosch EasyControl system, Alexa/Google Home.
- Premium pricing: Worcester boiler prices are £500–£1,000 higher than competitor prices.
- Limited high-capacity models: The Worcester combi boiler models are not suitable for large homes or commercial applications and does not offer modular configuration (the ability to link multiple boilers for even greater capacity).
- Pressure drop issues: Despite high Trustpilot scores, 15% of the reviews report faults like pressure drop issues, faulty AVV valves, and error codes (227 for flue blockages) that require an engineer's attention.
- Binding warranty practices: WB's warranties are often voided due to subjective installation interpretations regarding flue positions, power source connections and "at-risk" classifications unrelated to actual boiler defects.
How do Worcester Bosch boilers compare to other notable brands?
| Brand/Feature | Worcester Bosch | Baxi | Viessmann | Ideal | Vaillant |
|---|---|---|---|---|---|
| Price | £800–£4,000 | £660 - £1,550 | £1,050 - £2,200 | £650 - £1,960 | £900 - £2,300 |
| Warranty | 5-12 years | 10 years | 7-12 years | Up to 12 years | 2-10 years |
| Noise (dB) | 42-50 | 39–45 | 36–46 | 36-49 | 46–49 |
| Efficiency | A+ (up to 94%) | A (93%) | A (92-94%) | A (93%) | A (94%) |
| Hot water flow (l/min) | 20.3 | 18-21 | 21.2 | 15-18 | 20.1 |
| Trustpilot rating | 4.6/5 | 4.6/5 | 4.4/5 | 4.8/5 | 3.8/5 |
Worcester boilers are one of the most efficient boilers on the market, with some of their conventional boiler models showing an efficiency of 94%. They also show one of the highest hot water flow rates, outperformed only by Viessmann boilers.
Together with Ideal boilers, it also offers the most generous warranty of 12 years which shows company's confidence in their production.
Such outstanding tech specifications and excellent customer ratings are offset by higher pricing, though. If you're looking for a more budget-friendly boiler, consider Baxi boilers or Vaillant boilers.
Are Worcester boilers the right choice for you?
Worcester Bosch boilers have a strong presence on the UK boiler market, but is there a right one for your home? This largely depends on your house condition, heating needs and your budget.
Worcester Bosch produces one of the best boilers in the UK market, providing the quietest and most efficient operation, which is possible thanks to the brand's advanced technology and research. Such a top-notch performance, however, comes at the cost of high-end pricing of Worcester production.
That's why talking to a boiler installer is a surefire way to know whether investing in a Worcester boiler is beneficial for your situation.
Whether it's assessing your home's condition or simply discussing a boiler model, choosing an installer you can trust is absolutely necessary. How do you find one? You could read reviews on various websites and forums, request quotes from multiple providers or call up the installers yourself to ask for their fees.
This sounds like a lot of hassle, but it doesn't have to be. Let GreenMatch do the work. Within 48 hours, we can connect you with up to 3 boiler installers near you. All you need to do is complete our 30-second form and compare the free, non-binding quotes we provide for you.
Click the button below to get your quotes.
- Quotes from local engineers
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