Worcester Bosch Greenstar 4000 25kW
The Greenstar 4000 is the new and improved version of the Greenstar i, the nation's favourite boiler.
Boasting all the tried-and-tested features of the earlier model, this Greenstar 4000 is familiar, but totally transformed, with improvements in efficiency and control.
Modern, intuitive colour display
Instant hot water, always available
About the Worcester Bosch Greenstar 4000 25kW
Worcester Bosch Greenstar 4000 25kW specification
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ErP efficiency ratingA
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Central heating output3kW - 24kW
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Dimensions (mm) H x W x D724 x 400 x 310
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Hot water flow rate (35°C ΔT)10.2 l/min
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Optimised for low pressure areasYes
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Intelligent controlsYes
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Protection against freezingYes
Buy a new Worcester Bosch boiler in three easy steps
Find your perfect boiler
You can get an online quote in two minutes, or book a free video call with an energy expert.
Book an installation
With installation included in your fixed price, you can book a timeslot to suit you.
Get your boiler installed
We’ll remove your old one, carry out a system cleanse, install your new Worcester Bosch boiler and show you how to use it.
Worcester Bosch Greenstar 4000 25kW combi boiler
- Wide power range helps to reduce gas consumption and lower energy bills
- Innovative 'Quick Tap' water saving function helps reduce water waste with a quick open and close of your hot tap
- Features wireless connectivity with the Bosch EasyControl
- Suitable for small to medium homes
- Operates extremely well in low water pressure areas, ensuring powerful and warm showers
- One of the quietest combi boilers available, making it easy to live with
Why buy a boiler from us?
Spread the cost with 0% APR for up to two years1
Price includes installation. Get your new boiler installed from as little as 48 hours2
Includes up to a 10-year manufacturer’s guarantee
Worcester Bosch Greenstar 4000 25kW reviews
E.ON did an amazing job with our new Worcester Bosch Greenstar boiler, and the engineer did too. It even came with a seven year warranty if you get it serviced ever year. A massive thank you to E.ON, our house is so much warmer now, I'm happy with everything.
Why buy a Worcester Bosch boiler?
Why you should get a Worcester Bosch boiler
We only install the best, which is why we recommend Worcester Bosch. Reliable and built to last, they are energy efficient which can save you money and help the environment.
There's no surprise that these award-winning boilers are A-rated and Which? Best Buys for over 10 years. With sleek design and multiple colour options, they'll look great in your home.
Heating and hot water when you need it
Easy to adjust settings
UK market leader in domestic boilers
Pay with interest-free boiler finance
Explore more boilers
The legal stuff
1. E.ON Energy Installation Services Limited acts as a credit broker not a lender and work exclusively with Creation Consumer Finance Limited who acts as the lender. Credit subject to status, terms and conditions apply and can be found at eonenergy.com/terms-and-conditions/eon-installation, E.ON reserves the right to amend its finance offering at any time and may withdraw at short notice. E.ON UK plc is an Introducer Appointed Representative of E.ON Energy Installation Services Limited who are authorised and regulated by the Financial Conduct Authority in relation to credit broking services under number 750410. Registered in England and Wales under company number 09965944 with its registered office at Westwood Way, Westwood Business Park, Coventry, CV4 8LG.
2. If you accept the terms and conditions on your quote and either make an upfront payment or accept the terms and conditions of your finance agreement before noon. By requesting installation within your 14 day cooling off period you also waive your statutory right to cancel your contract.
3. Savings information for boilers in the UK provided by the Energy Saving Trust, based on a detached house with a boiler rating of G.
