Worcester Bosch Boiler Prices 2026: Full Range Guide
Quick Answer: Worcester Bosch boiler prices in 2026 range from around £1,975 fully installed for entry-level models up to £2,800 or more for the premium Greenstar 8000 range. Combi boilers start from approximately £675 for the unit alone. Worcester Bosch offers combi, system, and regular boiler types across multiple output sizes to suit most UK homes. Worcester Bosch combi boiler specifications highlight the efficiency ratings and impressive warranty options provided by the manufacturer. Many models feature advanced technology for better energy management, ensuring lower utility bills for homeowners. Additionally, the variety of sizes available makes it easier to find a suitable option for any type of property.
Worcester Bosch is one of the most recognisable and widely installed boiler brands in the UK, with a reputation built over decades of reliable performance across millions of homes. Their Greenstar range has dominated the replacement boiler market for years, and the introduction of newer models like the 4000 and 8000 series has kept them firmly at the front of the pack in terms of technology, efficiency, and value. This guide covers the full range of Worcester Bosch boiler prices in 2026, what each model offers, and how to choose the right one for your home. When considering a boiler for your home, it’s important to look at Worcester Bosch boiler reviews to understand the experiences of other customers. These reviews can provide insights into the performance and reliability of different models, helping you make a more informed decision. Additionally, you may find comparisons with other brands that highlight what makes Worcester Bosch a standout choice.
Worcester Bosch Boiler Prices at a Glance
The table below shows typical installed prices for the most popular Worcester Bosch models in 2026. These figures include supply and Gas Safe installation by a qualified engineer.
| Boiler Model | Installed Price |
|---|---|
| Worcester Bosch Greenstar 1000 | £1,975 |
| Worcester Bosch Greenstar 2000 | £2,175 |
| Worcester Bosch 25Si Compact | £2,050 |
| Worcester Bosch Greenstar 4000 | £2,275 |
| Worcester Bosch Greenstar 8000 | £2,800 |
| Worcester Greenstar Utility Regular | £2,400 |
Prices vary depending on the selected output, the installation complexity, and the UK region. London and the South East typically sit at the higher end of each range, while installations in other regions may come in slightly lower.
Worcester Bosch Combi Boiler Prices
Worcester Bosch combi boilers are the most popular choice across the range and suit the majority of UK homes where a single boiler handles both central heating and on-demand hot water. Installed prices start from around £1,895 and rise to approximately £2,950 for the higher-output 8000 series models. When considering Worcester Bosch boiler efficiency ratings, it’s essential to note that these models are designed with advanced technology to optimize energy use. Their high-efficiency ratings can lead to significant savings on energy bills over time, making them a wise investment for homeowners. Additionally, many models offer a range of seasonal efficiencies, ensuring that performance remains consistent throughout the year.
All current Worcester Bosch combi boilers are A-rated for energy efficiency, hydrogen-ready to a 20% blend, and designed to operate quietly enough to qualify for Quiet Mark accreditation on several models. The full combi range spans from compact entry-level options through to high-output boilers capable of serving large homes with multiple bathrooms simultaneously. when considering a baxi vs worcester bosch comparison, it’s essential to evaluate the features that each brand offers to determine which best meets your needs. While both brands are known for their reliability and efficiency, differences in warranty options and customer service may influence your decision. Additionally, installation requirements and potential maintenance costs should be factored into your overall assessment.
Worcester Bosch Combi Boiler Price List
| Model | Output | Unit Price |
|---|---|---|
| Greenstar 1000 | 25kW | £675 |
| Greenstar 1000 | 30kW | £720 |
| Greenstar 2000 | 25kW | £950 |
| Greenstar 2000 | 30kW | £1,050 |
| Greenstar 4000 | 25kW | £1,150 |
| Greenstar 4000 | 30kW | £1,250 |
| Greenstar i | 25kW | £800 |
| Greenstar i | 30kW | £850 |
| Greenstar 8000 | 30kW | £1,550 |
| Greenstar 8000 | 35kW | £1,600 |
| Greenstar 8000 | 40kW | £1,750 |
| Greenstar 8000 | 45kW | £1,800 |
| Greenstar 8000 | 50kW | £1,950 |
Unit prices do not include installation. For a full installed cost, add between £700 and £1,200, depending on the complexity of the job and regional labour rates.
Best Worcester Bosch Combi Boilers by Popularity
The table below ranks the most popular Worcester Bosch combi boilers by volume sold, combining performance, price, and customer demand.
| Rank | Model | Average Installed Price |
|---|---|---|
| 1st | Worcester Bosch Greenstar 4000 | £2,400 |
| 2nd | Worcester Bosch Greenstar 2000 | £2,300 |
| 3rd | Worcester Bosch 25Si Compact | £2,350 |
| 4th | Worcester Bosch Greenstar 8000 | £2,800 |
| 5th | Worcester Bosch Greenstar i | £2,200 |
Worcester Bosch Greenstar 4000
The Greenstar 4000 is the most popular Worcester Bosch boiler in the UK right now and has been one of the best-selling combis since its launch. It is a direct replacement for the long-running Greenstar i range, with improved technology, a refreshed design, and a colour LCD display. Worcester Bosch Greenstar 25i features advanced energy efficiency and a compact design, making it an ideal choice for smaller homes. Additionally, it comes with user-friendly controls, ensuring that homeowners can easily adjust settings to their preferences. Its reliable performance and quiet operation further enhance its appeal in the competitive boiler market. If you’re considering other options in the Worcester Bosch lineup, the Worcester Bosch Greenstar 2000 review highlights its solid performance and energy-saving capabilities, making it a strong contender for those seeking a reliable heating solution. Many users have praised its ease of installation and maintenance, which adds to the overall value. Coupled with Worcester Bosch’s reputation for quality, the Greenstar 2000 is certainly worth evaluating for anyone in the market for a new boiler.
It comes with built-in wireless connectivity, is hydrogen-ready to 20%, and is compact enough to fit inside a standard kitchen cupboard. The Simple Switch pipework alignment means it slots directly into the same position as the older Greenstar i models, which keeps installation time and labour costs down for replacement jobs.
A 7-year standard warranty is included, rising to 8 years when installed with a Greenstar System Filter and up to 10 years for qualifying installations. It suits most homes with up to two bathrooms and is one of the most straightforward and cost-effective combi boiler options available in 2026.
Worcester Bosch Greenstar 2000
The Greenstar 2000 is a quieter and more affordable entry point into the Worcester Bosch range, offering reliable performance for smaller homes and families. It is a compact wall-mounted boiler with a user-friendly display and built-in frost protection, designed for straightforward installation in kitchen or utility cupboards.
It comes with a 5-year manufacturer’s warranty as standard, extendable to 6 years when installed alongside a Greenstar System Filter. For homeowners who want dependable Worcester Bosch quality at a lower price point than the 4000, the 2000 is a practical and well-priced option.
Worcester Bosch Greenstar 1000
The Greenstar 1000 is Worcester Bosch’s most affordable combi boiler and is designed specifically for smaller properties where installation space and budget are both limited. It carries the same A-rated efficiency as the rest of the range and introduces the Quick Tap feature, which pre-conditions the boiler when you briefly open the hot tap, reducing the wait time for hot water at the outlet and lowering water wastage in the process. In addition to its affordability, the Worcester Bosch boiler performance overview highlights its exceptional reliability and user-friendly controls. Homeowners will appreciate the quiet operation and compact design, making it a suitable choice for various living environments. Furthermore, maintenance is straightforward, ensuring that the system remains efficient over its lifespan.
It is a hydrogen blend ready to 20%, suits homes with up to three bedrooms and two bathrooms in the 30kW version, and comes with a 5-year warranty as standard. For homeowners looking for the core Worcester Bosch quality at the lowest available entry price, the Greenstar 1000 delivers on that promise.
Worcester Bosch 25Si Compact
The 25Si Compact has taken over from the outgoing Greenstar Si and is designed for small to medium homes with a single bathroom. It is one of the slimmest boilers in the Worcester range and fits into tighter cupboard spaces than most comparable models.
It includes a low-energy pump, built-in frost protection, and a user-friendly display, with a 5-year standard warranty included. At around £2,000 installed it sits in a competitive part of the market but carries the build quality and brand reliability that Worcester Bosch is known for.
Worcester Bosch Greenstar 8000
The Greenstar 8000 is the most powerful combi boiler Worcester Bosch produces, available in outputs from 30kW up to 50kW and designed for larger homes with high simultaneous hot water and heating demand. It is available in both gloss white and gloss black finishes, which sets it apart aesthetically from most competing boilers in the market. For those considering options within the same line, the Worcester Bosch Greenstar 4000 specifications reveal a robust yet efficient choice ideal for smaller homes. This model also boasts innovative features that enhance energy efficiency while maintaining reliable heating and hot water performance. Homeowners will appreciate the blend of functionality and modern design found in the Greenstar range.
Built-in WiFi, an intelligent filling system, and advanced modulation technology make it one of the most connected and efficient options in the range, while a 12-year manufacturer’s warranty provides exceptional long-term cover. The higher price reflects both the output capability and the premium specification, and it competes directly with the Viessmann Vitodens 100-W 35kW at the top end of the residential combi market.
Worcester Bosch System Boiler Prices
Worcester Bosch system boiler prices start from around £2,000 including installation. System boilers are better suited to larger homes with multiple bathrooms where simultaneous hot water demand is a regular requirement, as they work alongside a hot water cylinder to store heated water at mains pressure. When considering the overall investment in a system boiler, it’s essential to factor in additional expenses such as Worcester Bosch boiler service costs. Regular servicing can help maintain efficiency and prolong the lifespan of your boiler, ensuring it operates at optimal performance. Homeowners should budget for these service costs to avoid unexpected repairs down the line. When planning for a system boiler installation, it’s also wise to consider Worcester Bosch thermostat installation tips to optimize your heating management. A properly installed thermostat can significantly enhance comfort and energy efficiency throughout your home. Additionally, pay attention to the placement of the thermostat to ensure it accurately reads the ambient temperature for effective climate control.
Worcester Bosch System Boiler Range
| Model | Typical Unit Price | Typical Installed Price |
|---|---|---|
| Greenstar 4000 System (9kW–24kW) | £1,100 | From £2,000 |
| Greenstar 4000 System (27kW–30kW) | £1,200 | From £2,100 |
| Greenstar 8000 Life System | £1,500 | From £2,400 |
| GB162 | From £2,000 | From £3,000 |
Worcester Bosch Greenstar 4000 System Boiler
The 4000 is available as a system boiler across five outputs and has become one of the best-selling system boilers in the UK since replacing the Greenstar i system. It carries the same hydrogen-ready specification and built-in WiFi as the combi version, along with a 10-year warranty that can be extended to 12 years through certain approved installers.
It is a well-rounded, competitively priced system boiler that suits most larger UK homes and benefits from the same Simple Switch pipework alignment as the combi, making it a practical replacement for older system installations.
Worcester Bosch Greenstar 8000 Life System
The Greenstar 8000 Life System is the most powerful wall-mounted system boiler in the Worcester Bosch range and is designed for larger properties with consistently high hot water demand. It is compatible with the Bosch EasyControl smart thermostat and comes with a 12-year extended warranty as standard, which is the longest available on any Worcester Bosch product.
It suits homes where the combi 8000 would not provide sufficient stored hot water capacity, and is a strong option for families with three or more bathrooms who need a reliable simultaneous supply across multiple outlets.
Worcester Bosch GB162
The GB162 is a high-output system boiler designed for both larger domestic properties and commercial applications. It is available in 50kW, 65kW, 85kW, and 100kW outputs, and can be installed as a standalone unit or as part of a multi-boiler cascade system for buildings with very high heating demands.
It integrates with solar thermal installations, which makes it a practical choice for properties with an existing solar setup that want to maximise renewable energy use alongside a gas boiler. Starting from around £2,000 for the unit, it is the most capable and versatile system boiler in the Worcester Bosch range.
Worcester Bosch Regular Boiler Prices
Regular boilers — also known as conventional or heat-only boilers — are best suited to older properties with traditional central heating systems that already have a cold-water tank in the loft and a hot-water cylinder. They are not the right choice for new installations in most cases, but for homes with existing infrastructure they remain a cost-effective and reliable option.
Worcester Bosch Regular Boiler Range
| Model | Typical Installed Price |
|---|---|
| Greenstar 8000 Life Regular | £2,400 |
| Greenstar Utility Regular | £2,000 |
| Greenstar Ri (9kW–24kW) | From £2,000 |
| Greenstar Ri (27kW–30kW) | From £2,100 |
Worcester Bosch Greenstar 8000 Life Regular
The Greenstar 8000 Life Regular is a compact, stylish regular boiler that suits older homes requiring a traditional heating setup with high output. It comes with a 12-year extended warranty and carries the same Greenstar build quality as the rest of the 8000 range.
Despite being a conventional boiler type, it has a modern and slim design that fits more neatly into available spaces than older regular boiler models. It is the go-to choice for homeowners who want to retain their existing traditional system while upgrading to a more modern and efficient heat source.
Worcester Bosch Greenstar Utility Regular
The Greenstar Utility Regular is an oil-fuelled floor-standing regular boiler designed for off-grid properties with high hot water demand. It is compatible with Worcester’s Greenskies solar panels, which allows it to integrate with a renewable energy source and reduce overall fuel consumption.
It is not the most environmentally straightforward option available, but for properties without a mains gas connection that need high-output heating from an existing oil system, it remains a capable and well-supported choice.
Worcester Bosch Warranties Explained
Worcester Bosch offers some of the most competitive warranties in the UK boiler market, with cover ranging from 5 years on entry-level models up to 12 years on the premium Greenstar range. The length of the warranty is typically determined by the model, the installer, and whether additional system components, such as a Greenstar Filter, are included.
| Model Range | Standard Warranty | Maximum Warranty |
|---|---|---|
| Greenstar 1000 | 5 years | 5 years |
| Greenstar 2000 | 5 years | 6 years (with filter) |
| Greenstar 4000 | 7 years | 10 years |
| Greenstar 8000 | 12 years | 12 years |
| Greenstar i | 5 years | 7 years |
Annual servicing by a Gas Safe registered engineer is required throughout the warranty period to keep the cover valid. Worcester Bosch provides a warranty checker tool on its website for homeowners to confirm the current status of their cover.
How to Choose the Right Worcester Bosch Boiler
The right Worcester Bosch boiler depends primarily on the size of the property, the number of bathrooms, and whether the home already has a hot water cylinder in place. For most homes with up to two bathrooms, a combi boiler from the 4000 or 2000 range will be the most practical and cost-effective choice.
Larger homes with three or more bathrooms and a higher simultaneous hot water demand are better served by a system boiler paired with an appropriately sized unvented cylinder. Older properties with existing conventional systems and loft tanks may be better suited to a regular boiler replacement rather than a full system conversion.
Output sizing should always be confirmed by a Gas Safe-registered engineer carrying out a proper heat loss calculation, rather than being selected based on the property description alone. Oversizing a boiler is as inefficient as undersizing it, and a correctly matched output will deliver better efficiency and lower running costs throughout the boiler’s lifespan.
FAQ
How much does a Worcester Bosch boiler cost installed in 2026?
A Worcester Bosch boiler installed in 2026 typically costs between £1,975 for an entry-level Greenstar 1000 and £2,800 or more for the premium Greenstar 8000. Mid-range models such as the Greenstar 4000 sit at around £2,275 to £2,400 fully installed, including parts and labour. Prices vary depending on the output selected, the complexity of the installation, and the region of the UK where the work is carried out.
What is the best Worcester Bosch boiler in 2026?
The Worcester Bosch Greenstar 4000 is the most popular model in 2026 by volume, offering a strong combination of A-rated efficiency, built-in Wi-Fi, hydrogen readiness, and a competitive installed price. The Greenstar 8000 is the superior choice for larger homes with high hot water demand, carrying a 12-year warranty and outputs up to 50kW. For budget-conscious buyers in smaller properties, the Greenstar 1000 and 2000 offer reliable Worcester Bosch quality at a lower price point.
How long is the warranty on a Worcester Bosch boiler?
Worcester Bosch warranties range from 5 years on entry-level models up to 12 years on the Greenstar 8000 range. Mid-range models like the Greenstar 4000 carry a 7-year standard warranty, extendable to 10 years under certain installation conditions. All warranties require annual servicing by a Gas Safe-registered engineer to remain valid, and Worcester Bosch provides an online warranty checker for homeowners who want to confirm their current cover status.
Is the Worcester Bosch Greenstar 4000 hydrogen-ready?
Yes, the Worcester Bosch Greenstar 4000 is hydrogen-ready as standard and can run on a blend of up to 20% hydrogen mixed with natural gas without any modification. This applies across the combi and system boiler versions of the 4000 and is a feature shared across the entire current Worcester Bosch Greenstar range. The 8000 series is additionally designed to be upgradeable to run on 100% hydrogen in the future as the gas network evolves.
What is the difference between a Worcester Bosch combi and a system boiler?
A Worcester Bosch combi boiler heats water on demand directly from the mains and does not require a separate hot water cylinder, making it the most compact and straightforward option for smaller homes with up to two bathrooms. A system boiler works alongside an external unvented hot water cylinder, storing heated water at mains pressure to supply multiple outlets simultaneously without any loss of flow or temperature. System boilers are better suited to larger homes where several people may need hot water at the same time.
Does Worcester Bosch make a regular boiler?
Yes, Worcester Bosch produces a range of regular boilers — also known as conventional or heat-only boilers — under the Greenstar Ri, Greenstar 8000 Life Regular, and Greenstar Utility Regular names. These are designed for older properties with traditional heating systems that already have a cold-water tank in the loft and a separate hot-water cylinder. They are not typically recommended for new installations, but remain a practical and cost-effective choice for homes where the existing conventional infrastructure is being retained.
Can I get finance on a Worcester Bosch boiler?
Yes, boiler finance options are available for Worcester Bosch boilers through approved installers and boiler retailers, allowing homeowners to spread the cost of supply and installation over monthly payments. Finance arrangements vary by provider and are subject to credit checks and standard lending criteria. It is worth confirming what is included in the financed amount — installation fees, filters, and any required pipework changes should all be factored into the total before agreeing to a finance plan.
How do I know which size Worcester Bosch boiler I need?
The correct boiler size depends on the number of radiators, bathrooms, and occupants in the property, and should be confirmed by a Gas Safe-registered engineer carrying out a heat loss calculation, rather than being selected based on property size alone. As a general guide, the Greenstar 2000 and 4000 in 25kW suit most homes with one bathroom, while 30kW models cover homes with two bathrooms and moderate demand. The Greenstar 8000 range covers larger homes and higher simultaneous demand from 30kW up to 50kW.
Conclusion
Worcester Bosch remains one of the most trusted and widely installed boiler brands in the UK in 2026, with a range that covers virtually every domestic heating requirement from compact single-bathroom properties through to large family homes with multiple bathrooms and high simultaneous hot water demand. The Greenstar 4000 sits at the heart of the range and represents the strongest all-round value for most homeowners, combining A-rated efficiency, modern connectivity, and a competitive installed price. as homeowners evaluate their options, alpha boilers brand comparison insights reveal key differentiators among the market leaders. This information empowers consumers to make informed choices that align with their specific heating needs and budget. With an effective blend of performance and reliability, brands like Worcester Bosch continue to set benchmarks in the industry.
For those who need more output or a longer standard warranty, the Greenstar 8000 justifies its higher price with a 12-year cover and outputs up to 50kW. Whatever the property type or budget, matching the boiler to the home correctly — with the right output, type, and installer — remains the single most important factor in getting long-term value from any Worcester Bosch investment.
