Here Are The Top 5 Worcester Bosch Boilers

What is a Boiler?

A boiler is a closed vessel in which water or any type of fluid is heated. It actually makes a separate way for the vaporized fluid to exit the boiler and use them in various processes or heating applications, central heating, boiler-based power generations, cooking, sanitizing, etc.

The source of heat for a boiler is usually combustion of any of the natural fuel, such as wood, coal, oil or natural gas. Electric steam boilers use immersion-type heating elements. And in some places, nuclear fission is also used for generating steam. It can also be used at home for heating domestic water and eliminate the usage of a separate tank or cylinder.

Buying Guide For Worcester Bosch Boilers

We may help you on finding the best boiler for your home. From picking the right size to the ideal type, we will give the best advice always. A new boiler is likely to be one of the most expensive household purchases you’ll make. So it’s important to choose the right boiler from the right brand at the right price. 

Types of gas boiler

There are three main types of gas condensing boiler to choose from: a combi (combination), system and conventional. 

  1. A combination boiler, commonly known as a combi boiler, heats water as you need it and eliminates the need for a storage tank. Combi boilers directly heat water from the mains before transferring it to the central heating system. This provides heat for your radiators and domestic hot water on demand. If you live in a small home with only one bathroom or live on your own or with only one other person, a standard combi boiler without a hot water tank will usually be the best choice.
  2. Heat-only (conventional) boiler is the oldest type manufactured by Worcester, it will have a hot water storage cylinder and also a large cold water feed tank, usually in the loft. A heat-only boiler means you will have a hot water tank or cylinder where hot water can be stored for later use. 
  3. A system boiler is much like a heat-only boiler, but it doesn’t require the extra space you need for a cold water storage tank, but more components are built-in. This can make the system boilers easier to install than conventional ones and they tend to take up less space.

If your home is larger or there are more than two people living in it, then a heat-only or system boiler is usually a better option. 

Efficiency

If you have gas central heating, your boiler will account for around 60% of your home’s CO2 emissions*. This makes your choice of boiler a key priority if you’re looking to cut your energy bills and carbon footprint. Replacing an old-fashioned non-condensing boiler with a modern condensing system can improve efficiency by as much as a third, and will save you a significant amount on your energy bills.

  1. The heating and hot water capabilities of the boiler: The physical size of your boiler and whether it will fit in the space you have it destined for.  The correct heating size of the boiler will be something unique to you and your home, as it depends on things such as how many bathrooms you have and how many people you live with. This is something your heating engineer can help you with, and they will be key to making sure you achieve your hot water and heating requirements.
  2. Buying a reliable boiler: We know that when it comes to buying a new boiler, reliability and dependability are the most important factors that will influence which boiler you must buy. So we do intense research every year to separate the good from the bad brands in terms of reliability. We want to ensure every consumer spend this huge amount on right brand. The more reliable your new boiler, the less money you will have to shell out on expensive repairs. If you choose the most reliable brand of boiler, 63% are likely to still be fault free after six and a half years.

Engineer’s advice

Get your boiler engineer’s opinion and consider their answer carefully: your boiler engineer will be an invaluable source of information during the buying process. He or she will be able to guide you to make the best choice on the type and size of boiler you need. It’s always good practice to ask your heating engineer what size boiler they think best fits your requirements.

Also while comparing boilers, you should always look for output rating, efficiency and warranty of each model. Take time to look for these information and you will surely find the best boiler that suits your home and needs.

Product namePrime eligibleProduct rating by usProduct price (with installation and tax)
Worcester Bosch Greenstar 25i Combi Gas Boiler  yes4.7/5$1,998.82 – $2,677.12
Worcester Bosch 2000 25kW Combi Gas Boiler  Yes4.5/5$1,730.80 – $2,408.48
Worcester Bosch Greenstar 24i System Gas Boiler  Yes4.7/5$2,142.01 – $2,819.86
Worcester Bosch Greenstar 24Ri Regular Gas Boiler  Yes4.8/5$1,971.19 – $2,648.40
Worcester Bosch Greenstar 30Ri Regular Gas Boiler  Yes4/5$2,141.49 – $2,819.18

Worcester Bosch boilers

Worcester Bosch is one of the most popular and well-known boiler brands in the market for the past 50 years. It manufactures high-quality gas, LPG, and oil boilers. So we will compare top boilers from each category.

Worcester Bosch Greenstar 25i Combi Gas Boiler

Overview

The Greenstar 25i, manufactured by Worcester Bosch, is a condensing wall-mounted boiler that has been designed with a wide range of features and benefits. The Greenstar I is one of Worcester Bosch’s most popular Combi boilers as it has simple to use unit with a clear display and high efficiency of 94%, making this an ErP A-rated boiler.

Features

  • If your home is medium sized with 1 or 2 bathroom(s), the 25kW is perfect for you. A 30kW boiler is also present, which is perfectly suitable for the larger homes with 2 or more bathrooms and a higher demand for heating and hot water.
  • A Combi boiler supplies hot water and heating on demand by using the mains water supply. This means you don’t need to have bulky tanks or cylinders which will take up less space and making them perfect for the smaller homes or properties.
  • This unit has simple-to-use controls with clear information display to give you maximum control over the unit and condensate discharge that’s resilient to freezing up to -15c, that will protect your unit in the colder months when you need the unit most.
  • It also features a wide choice of controls, allowing greater comfort and economy, as well as featuring a low energy pump that helps to reduce electrical usage and water is instantly heated from the mains. It’s able to achieve an A+ rating when installed with a Wave Smart internet connected control.

Key Specifications

  • Manufacturer: Worcester Bosch
  • Efficiency Rating: 94%
  • Band Rating: A Rated
  • LPG Compatible: Yes
  • Standard Warranty: 5-7 Years
  • Central Heating Max. Output: 25kW
  • Flow Rate: 9 l/m
  • ErP Rating: A

Advantages

  • ErP rated A
  • Available in 2 different size
  • Save space; perfect for small property
  • Simple to use controls
  • LED display
  • Energy efficient
  • Reduces expenses
  • Great warranty
  • Quick heating

Disadvantages

  • Cannot be installed in large properties with more than 2 bathrooms.

Worcester Bosch 2000 25kW Combi Gas Boiler

Overview

The Worcester 2000 is a natural gas Combi boiler that’s been designed and manufactured by Worcester Bosch to be accessible for all in an affordable price. Worcester 2000 boilers have been designed to give beneficial features.

Features

  • An efficiency rating of 93% and ErP A rating for heating and hot water makes the Worcester 2000 a highly efficient Combi boiler. It also boasts a flow rate of 12.3 liters per minute – the same as the Greenstar I range.
  • The 25kW output rating is best suited to apartments, small and medium sized homes with a single bathroom. Combi boilers supply hot water and heating on demand using the mains water supply with no need for any bulky tanks or cylinders – perfect for smaller homes where space might be limited.
  • Some of the Worcester 2000 features include a vertical or horizontal pipe, easy access with removable side panels, maximum flue lengths of 9m horizontally and 12m vertically (60/100).
  • A new C6 heat exchanger which is an evolution to the Worcester Bosch tried and tested WB3 heat exchanger that’s featured in the Worcester Greenstar I range, the ability to modulate down to as little as 4.8kW with 1:5 and 1:6 modulation, 35 degree hot water temperature rise and it’s their quietest Combi boiler to date at 45dB (a).
  • With the Worcester 2000 you can benefit from a flexible installation because of its compact size, wall mounting and variety of flue lengths, meaning that it can be installed almost anywhere around the home.
  • Worcester Bosch are one of the most prestigious boiler manufacturers around and have won the ‘Which? Best Buy award’ for 10 years in a row as of 2019.

Key Specifications

  • Manufacturer: Worcester Bosch
  • Efficiency Rating: 93%
  • Band Rating: A Rating
  • LPG Compatible: No
  • Standard Warranty: 5-10 Years
  • Central Heating Max. Output: 25kW
  • Flow Rate: 9 l/min
  • Total Cost: £1,277 – £1,777
  • ERP Rating: A

Advantages

  • ErP rated A
  • Good for small apartments
  • Simple to use controls
  • Flexible installation process
  • Energy efficient
  • Reduces expenses
  • Great warranty
  • Quick heating

Disadvantages

  • Cannot be installed in large properties with more than 1 bathrooms.

Worcester Bosch Greenstar 24i System Gas Boiler

Overview

The Worcester-Bosch Greenstar 24i System has been tagged as one of a range of highly energy efficient ‘A’ rated gas-fired condensing boiler by SEDBUK 2009 (Seasonal Efficiency of Domestic Boilers in the United Kingdom).

Features

  • Being a system boiler the Worcester-Bosch Greenstar 24i System requires a hot water storage cylinder but no feed and expansion cistern making it quick and easy to install as well as being efficient and economical to run.
  • In fact the Worcester-Bosch Greenstar 24i System recycles the heat from exhaust gases that would otherwise be lost through the flue and modulates its output independently for domestic hot water and central heating making it up to 30% cheaper to run than some older boilers.
  • The storage capacity of your hot water cylinder is the determining factor in the amount of hot water readily available to your household but the Worcester-Bosch Greenstar 24i System with a maximum output of 24kW (kilowatts) or 82000Btu (British thermal units) per hour is typically suitable for a medium or large family house with a traditional heating system.

Key Specifications

  • Manufacturer: Worcester Bosch
  • Efficiency Rating: 94%
  • Band Rating: A
  • LPG Compatible: Yes
  • Standard Warranty: 5 Years
  • Central Heating Max. Output: 24.6 kW
  • Total Cost : £1,580 – £2,080
  • ERP Rating: A

Advantages

  • ErP rated A
  • Simple to use controls
  • Energy efficient
  • Reduces expenses
  • Great warranty
  • Quick heating
  • Good for larger properties
  • This boiler is recommended by the Energy Saving Trust.

Disadvantages

  • Cannot be installed in small properties because of the extra space required for the separate hot water storage tank.

Worcester Bosch Greenstar 24Ri Regular Gas Boiler

Overview

The Greenstar 24Ri has a 24 kW output rating, making it most suitable for smaller/medium sized homes that don’t have such a high demand for heating and hot water. A seasonal efficiency rating of 92% makes the Greenstar 24Ri a highly efficient boiler that also has an ErP A-rating for heat.

Features

  • Regular boilers (conventional or heat-only too) heat the central heating system directly and produce hot water for a cylinder. Due to needing a hot water cylinder, which is often fed by a cold water storage cistern located in the attic, regular boilers aren’t suitable for smaller properties where space is limited.
  • The Worcester Bosch Greenstar Ri range includes a number of models with varying outputs to help find the ideal unit for most homes. As well as this 24 kW model, there are also 9 kW, 12 kW, 15 kW, 18 kW and 21 kW boilers available.
  • The 9 kW, 12 kW and 15kW boilers are suitable for smaller homes with 1 bathroom and a low demand for heating and hot water. Meanwhile, the 18kW and 21kW boilers can meet slightly higher demands.
  • The Greenstar 24Ri will help to reduce your energy bills making it highly energy efficient. Plus, its compact size and light weight will lower the initial costs of installation.
  • Save even more money by pairing it with Worcester Greenskies solar panels.
  • As a compact wall-mounted boiler, Worcester Bosch have designed this boiler to fit within a standard kitchen cupboard. The inclusion of a frost protection feature means that it can be installed into a loft or garage too.
  • The Greenstar 24Ri comes with many features and benefits including simple boiler controls to give maximum control over the unit and the ability to pair it with Worcester Greenskies solar panels.

Key Specification

  • Manufacturer: Worcester Bosch
  • Efficiency Rating: 92%
  • Band Rating: A Rated
  • LPG Compatible: Yes
  • Standard Warranty: 5 Years
  • Central Heating Max. Output: 24kW
  • Total Cost : £1,454 – £1,954
  • ERP Rating: A 

Advantages

  • ErP rated A
  • Variety of ranges available
  • Save space; perfect for small/medium sized property
  • LED display
  • Energy efficient
  • Reduces expenses
  • Great warranty
  • Quick heating
  • Compact size
  • Light-weighted; easy to install
  • Easy control to solar panels

Disadvantages

  • Cannot be installed in large properties with more than 2 bathrooms.

Worcester Bosch Greenstar 30Ri Regular Gas Boiler

Overview

Worcester Bosch have designed and manufactured the Greenstar 30Ri as a condensing regular gas boiler that’s suitable for larger homes. A seasonal efficiency rating of 93% makes this a highly efficient boiler that also has an ErP A-rating for heat.

Features

  • An output rating of 30kW makes this Worcester Bosch boiler perfect for larger homes with 2+ bathrooms and a higher demand for heating and hot water.
  • There’s plenty of choice when looking to install a Worcester Bosch Greenstar boiler. You not only have to install a gas boiler, LPG is also available. In addition there are multiple output ratings in addition to this 30 kW model, including: 12 kW, 15 kW, 18kW 24kW and 27 kW boilers.
  • Thanks to featuring flexible flues, the Greenstar 30Ri can be installed just about anywhere and being a compact wall-mounted unit means it can be installed within a standard cupboard, out of sight.
  • This boiler can save you money from its high efficiency rating allowing you to reduce your energy bills. As well as this it is an easy to install boiler allowing you to save the much needed money on installation costs as well as saving you time
  • Regular boilers directly heat the central heating system and also produce domestic hot water for a cylinder. As they need a hot water cylinder, often fed by a cold water storage cistern in the loft, regular boilers aren’t suitable for smaller properties or homes where space is limited.
  • Features of the Greenstar 30Ri include frost protection to reduce freezing during the cold winter months, simple boiler controls for maximum control and the ability to be paired with Worcester Greenskies solar panels.

Key Specification

  • Manufacturer: Worcester Bosch
  • Efficiency Rating: 93%
  • Band Rating: A Rated
  • LPG Compatible: Yes
  • Standard Warranty: 5 Years
  • Central Heating Max. Output: 30kW
  • Total Cost: £1,580 – £2,080
  • ERP Rating: A

Advantages

  • ErP rated A
  • Available in many different ranges
  • Save space; perfect for small property
  • Simple to use controls
  • Energy efficient
  • Reduces expenses
  • Frost protection system
  • Great warranty
  • Quick heating

Disadvantages

  • Cannot be installed in large properties with more than 2 bathrooms.

Facts About The Brand

Worcester was originally founded in 1962, committed to producing highest quality products. The Worcester is known for being the top rated brand for boilers by providing the most effective and efficient heating to all type of homes. With the reputation of providing premium quality and reliable products, it is high in demand among the customers in UK.

How We Examined The Products To Recommend You

According to us, Worcester is a great addition to any household. Worcester is branded as ‘UK’s most loved boiler’ because of the level of trust it has created among its customers. It manufactures with safety, energy-efficiency, and reliability. The boilers are designed and developed with high standard guidelines, making them potentially a great fit for any size of household. It has much range of boilers suiting every kind and size of houses and fulfilling all the needs.

  1. Energy-efficient – Worcester boilers have ‘which?’ 5-star energy-efficiency score, and A-rated boilers. The boilers produces water vapor condensation to extract as much heat from the fuel as possible, as a result it reduces the energy usage and helps the house owner to save money.
  2. High quality products – Worcester Bosch has an overall brand score of 92% and according to ‘which?’ their boilers receive top scores for customer reviews as well and a popular choice for house owners who plan for installing new boilers.
  3. Cost-effectiveness – it already potentially lowers your energy usage, which automatically reduces your energy bill. The Worcester will definitely help you to save money on monthly bills; this may be a onetime great investment as the overall price of the Worcester boilers are higher than others, but it will be worth it.

FAQs

  • How many radiators can a 30kW boilers run?

Ans. 15 radiators

  • Who is eligible for a new boiler?

Ans. In order to qualify for a boiler grant through the government ECO scheme, there is are certain benefits related criteria which needs to be met. Your property must be on a mains gas supply, the previous boiler must be at least 5 years old that you are planning to replace and you must be the house/property owner.

  • Does a higher kW boiler cost more to run?

Ans. No. The higher kW due to the higher output can heat your home faster, but then go into simmer mode. Whereas the smaller boilers will stay on high fire longer to get the radiators to temperature. So the cost will not differ much.

  • How often should one need to re-pressurize a combi boiler?

Ans. There isn’t a specific timeframe that states when you should re-pressurize the combi boiler, but you should always do it when the pressure has dropped to below 1 bar.

  • How long does it take to install a boiler?

Ans. Approximately 1-3 days, depending on the type and size of the boiler.

Stories From The Real World Use Cases

Reviewed by Philip Gill

Our Worcester Bosch boiler was installed by a highly reputable Worcester Bosch installer – all the technicians works hard and their work was exemplary. The technology has improves beyond recognition allowing the customer to control the heating and hot water functions more efficiently and economically. The actual heating controls are very adaptable to the customer’s housing situation e.g. is heating required on all day? Is heating required just twice a day perhaps? Both these circumstances can be programmed to the customer’s needs. The boiler itself is very stylish and neat fitting into our kitchen in a corner by the door. Our previous boiler was a Worcester Bosch so this new one has been enhanced many times over. 

He gave it 4.5/5 stars

https://www.trustpilot.com/review/www.worcester-bosch.co.uk

Conclusion

We have shown you the best 5 Worcester Bosch boilers out of each category. It is hard to select one out of these 5 because all of them belong to different categories and have something unique in them. So we would suggest you read the buying guide properly and then select the best category (Combi, Regular, System) for you, after you select the category read about the product available in that category. This will make your task easier and faster. Make sure you consider more than one quote before taking a final decision.

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