Worcester Bosch Greenstar I Series

The Greenstar I Series is comprised of compact combi boilers designed to provide effective and efficient heating and hot-water. Worcester Bosch reinvented their Greenstar I Junior range with this set of boilers, making additions and improvements based on installer feedback with the aim of providing homeowners with an energy-efficient heating solution.


Boilers in the Worcester Bosch Greenstar I range

Combi boilers from the Greenstar I series are manufactured with energy-efficiency, reliability and customer satisfaction in mind. Boilers from this range include:


Greenstar 25i

The 25i boiler could be an ideal choice for a smaller home with 1-2 bedrooms, up to 10 radiators and 1 bathroom.

Greenstar 28i Junior


Greenstar 30i

The 30i boiler could be a particularly suitable option for homes with 3-4 bedrooms, up to 15 radiators and 1-2 bathrooms.


Key features

  • User-friendly boiler controls
  • Clear information display
  • Instantaneous hot water
  • A-rated energy-efficiency
  • Low energy pump designed to lower energy usage
  • Condensate Siphon to help prevent pipe freezing
  • Improved controls designed to enable greater comfort and economy





About the Worcester Bosch Greenstar I series range

The Greenstar I range is a set of A-rated, energy-efficient combi boilers designed to enable homeowners to access quality heating and hot-water as well as potentially lower their energy bills by reducing their energy wastage**.

An advanced version if its predecessor (Worcester Bosch Junior I), this range boiler is manufactured to combine effective central heating and innovative controls and to allow you to gain optimum comfort as well as optimum control. Key features include user-friendly controls and a clear information display to allow you to modify your heating to your preferences, and a low energy pump designed to help you reduce your energy wastage.

Pipe freezing could occur in severe weather conditions; however, the boilers’ condensate siphon is designed to help keep your boiler in working order regardless of the weather outside. Additionally, with reduced levels of greenhouse gas emissions, these boilers could be a suitable choice for homeowners looking for an environmentally-conscious way of heating their home.

Try our free quote tool today to get an estimate of how much it could cost to have a boiler from Worcester Bosch's Greenstar I range installed into your home.



*5% online discount is available to domestic gas and LPG customers who receive an online quote for all boiler brands excluding the Ideal Logic HE24, HE30, HO15 & HO18 and Worcester Bosch 25i ERP, 30i ERP, 15ri & 18ri boilers which qualify for the winter bundles offer. £50 additional discount available on all like-for-like system swaps and a £100 additional discount is available on conventional to combi, and combi to conventional boiler swaps. Online discounted price is only available for the duration of the 14-day quote validity which starts from the day the quote was given. Help-Link UK Ltd include a filter as part of your quote as this is highly recommended by the boiler manufacturer as a key component in maintaining boiler health, functionality and may potentially be looked upon favourably by manufacturers when assessing warranty work. This filter can be removed at the customer's request. Quote also includes a programmable thermostat for all combi boiler installations as this is a legal requirement as part of the Boiler + legislation introduced 6th April 2018, and cannot be removed from the installation unless; it is replaced with an alternative smart thermostat; or another energy saving measure as listed in the Boiler + legislation or if a smart thermostat already exists within the property. Alternative thermostats, including smart thermostats are subject to an additional charge.