*Please note that this boiler has been discontinued by its manufacturers. Click here to view its replacement range.

Worcester Bosch Greenstar 28i Junior

Type Combi boiler
Fuel Gas
Efficiency Rating A
Standard Warranty 5 years
Weight 39.5kg
Width x Height x Depth 400mm x 700mm x 330mm
Max kW Output 28kw
Flow rate 10l/min


The Worcester Bosch Greenstar 28i Junior combi boiler is a popular choice for homes in need of a compact heating solution. With the ability to provide both heating and hot-water without any additional storage tanks or cylinders, this boiler could be suitable if space-saving and energy-efficiency are important for your home.


Product description

The Greenstar 28i Junior combi boiler is generally a suitable choice for most homes with 2-4 bedrooms, up to 15 radiators and 1 bathroom. The most powerful model in its range, this boiler has a 28kW output and is capable of providing flow rates of up to 10l per minute.

Designed to provide high-quality and energy-efficient central heating, this boiler could help you lower your energy wastage with key features such as simple boiler controls and smart thermostat compatibility. Such features could make controlling and monitoring your heating easy to do, potentially helping you reduce your energy bills by providing you with an opportunity to ensure that your heating isn’t being used inefficiently**.

With a standard 5-year manufacturer-backed warranty, you could be provided with added peace of mind in knowing that should a problem arise with this boiler, you could receive a repair or replacement at no cost to you***.


Key Features

  • SEDBUK Band A rating (Energy-efficiency)
  • Smart control compatibility
  • Nox Class 5 (Low greenhouse gas emissions)
  • Keep hot facility – designed to provide instant hot-water
  • 5-year warranty
  • Compact dimensions
  • Designed to have simple boiler controls

*Please note that this boiler has been discontinued by its manufacturers.

Similar Alternative Models

We aim to provide you with a range of boilers to choose from for your home and needs. As the Greenstar 28i Junior combi boiler has been discontinued, here’s a few products that may also be suitable:

1. Worcester Bosch Greenstar 30i

  • A part of the official replacement range for Greenstar Junior boilers
  • Up to 10-years' manufacturer-backed warranty through HomeServe***.
  • Designed to provide Instantaneous hot-water

2. Ideal Logic+ C30

  • Compact dimensions
  • Reader Recommended by Good Housekeeping
  • Designed to have boiler frost protection

3. Vaillant EcoTec Pro 28kW

  • A-rated for efficiency
  • Designed to have increased hot-water delivery speed
  • Designed to operate quietly

If you were looking for a Greenstar 28i combi boiler, we could provide you with an alternative option that could effectively and efficiently meet your needs. Try our free quote tool to get a recommendation for a boiler or you could call us and speak to us directly.



***Subject to an annual service at the customer's expense. Warranty extension from 5-years to 10-years only available on Worcester Bosch and Ideal gas boilers and may be subject to an additional charge.