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Worcester System Boilers

Worcester System Boilers

For many years, Worcester have been developing and revolutionising boilers to keep you and your home warm. As one of the UK's most popular brands, it is easy to see why the extensive range of Worcester system boilers are brought across the UK.

The popular Worcester system boiler range gives homeowners A-rated efficiency performance and are compatible with the full range of Worcester controls and accessories. All Worcester system boilers undergo three levels of strict product testing before leaving the factory, so stellar performance and quality can be assured across this award-winning range.

At Direct Heating Supplies, we have an extensive range of Worcester system boilers available making it easy to find one for your home irrespective of the size and power output requirements needed.

Buy your Worcester system boiler today from Direct Heating Supplies for great service and free fast delivery.

Please note all boiler purchases must be made online and cannot be made via the customer service phone line.

Boilers do not come with a flue, flues can be purchased separately here or you can purchase a boiler pack which includes your boiler and flue or boiler, flue and timer.

Need some help deciding? Read our boiler guidance for further information.

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Worcester System Boiler Overview:

What is a System Boiler?

A system boiler is a great solution to efficiently heat your home and hot water especially if you have multiple bathrooms. The system boiler pumps hot water in to the radiators and a sealed hot water storage unit (this is often stored out of sight in an airing cupboard). Unlike a regular boiler no cold water feed is required in the loft as system boilers take a direct feed from the cold water mains and stores water in a small tank built into the boiler itself.

With a system boiler most of the heating and hot water system components are built in to the boiler itself including the pump and expansion vessel. This helps to maintain a clean and tidy appearance, save space in your home and making the installation straightforward.

Benefits of a System Boiler?

Take a look below for some of the benefits of using a system boiler within your home:


  • Good flow rate from the storage cylinder
  • There is no need for a cold water feed, freeing up valuable space in your loft
  • Suitable for even larger home as multiple outlets can be used at the same time (great for homes with multiple bathrooms)
  • Constant supply of hot water will be provided to all taps without sacrificing water temperature elsewhere in your home
  • Economical to run and environmentally friendly as they burn less gas

  • Worcester Models

    There are 2 core models available in the Worcester System Boiler range, each of which offer numerous central heating output options to suit your home’s requirements. All boilers in the Worcester system boiler range also come with a 5 year manufacturer warranty.

    Worcester Greenstar i range:

    Ideal for properties of all sizes, the Worcester i System boiler is one of the UK's bestselling system boilers and is available with a generous 5 year warranty. The i System Boiler is available in Worcester's compact dimensions in outputs between 9kW and 30kW, suiting properties of sizes both larger and small.

    Worcester Greenstar CDi Classic Range:

    The CDi Classic range of System Boilers incorporate premium quality components for ultimate reliability of your heating system. The CDi Classic Range includes two outputs of 30kW and 35kW, making them ideal for larger properties with multiple water sources in use at the same time.