🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥
🔥Cyber Monday: Get £200 off🔥

Worcester Bosch Greenstar 4000 System

Available in 12, 15, 18, 21, 24 kW

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Manufacturers 10 year warranty

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Hydrogen blend ready

Fixed price install from


inc VAT

Exceptional Bosch engineering

Introducing the Worcester Bosch Greenstar 4000 System boiler, available through Padly for a seamless installation experience. This compact, efficient boiler is designed for medium to large-sized homes. With its quiet operation and user-friendly features, it ensures peace and convenience. The A-rated efficiency level reduces energy bills, while low NOx emissions make it environmentally friendly. Compatibility with Worcester Bosch controls enables remote heating management. The 5-year guarantee provides peace of mind. Accessories like flue kits and system filters can be added for customization.

Choose Padly for a simplified boiler installation and maintenance process with the Greenstar 4000 System boiler.

Experience the Game-Changing Benefits of the Worcester Bosch Greenstar 4000

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Quietest Worcester Bosch combi boiler

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Reduce gas consumption with wide power range

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Stylish modern design with screen colour display

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Wireless connectivity with Bosch EasyControl

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Compatible with selected solar panels

Wall mounted worcester bosch boiler on a white wall inside a kitchen next to a hanging ceiling light shade

What's the specifics?

W 400 x D 310 x H 724
Warranty Length
Manufacturers 10 year warranty
Boiler Type
Efficiency Rate
Rated A (94%) for energy efficiency
Fuel Type
It's more than an install with Padly

What's included?

Boiler and pipework installation

Whether you’re getting a new improved system boiler or upgrading to a combi boiler, we appreciate that sometimes it’s necessary to have pipework alterations when a new boiler is installed. That’s why any pipework is included in the price of your installation.

Removal and disposal of your old boiler

At Padly we pride ourselves on ensuring our boiler installations are as easy and stress free as possible therefore, our engineers will ensure the removal and disposal of your old boiler is taken care of.

Removal of old tanks and pipework

If you’re looking to change from a system or heat-only boiler to a combination there will be no need for you to have a water tank in your attic freeing up space. Our installers remove old water tanks and boilers upon installation of your new system.

Chemical flush your system

After installing a brand-new boiler, we will complete a chemical flush, free of charge. Our engineers will complete a power flush designed to remove the sludgy build-up and grime that can accumulate in your central heating system over the years so you new boiler can work side by side with a clean central heating system.


Your new boiler installation will go hand in hand with a new thermostat. We will give you the choice of a standard replacement or upgrading to a smart thermostat to become compatible with smart home technology such as nest.


All our boilers come with a manufacturers warranty; however, the length of these warranties is dependent on the boiler you choose. For example, our Worcester Bosch Greenstar range comes with a warranty of up to 10 years.