Worcester Bosch Greenstar 42CDi Classic

Type Combi boiler
Fuel Gas
Efficiency Rating A
Manufacturer-backed warranty available through HomeServe Up to 10-years***
Weight 47.5kg
Width x Height x Depth 440mm x 760mm x 360mm
Max kW Output 42kW
Flow rate 15l/min


If you’re in search of an energy-efficient boiler for a larger property with higher hot-water demands, the Worcester Bosch Greenstar 42CDi Classic combi boiler could be an ideal choice for you. Described by the manufacturer as part of the brand’s “top-of-the-range” set of combi boilers, this unit has the highest hot-water flow rate in the Greenstar combi wall-mounted range.


Product description

With the highest kW output in the CDi Classic range, the 42CDi has the potential to meet the central heating demands of a home with 4 or more bedrooms and 2 or more bathrooms. If you and your family have a high demand for hot-water and heating, this boiler unit could be a suitable choice for your home as it is designed to deliver both without wasting too much energy. The boiler has key features such as simple boiler controls and a clear informational display to help make monitoring and adjusting your heating as simple as possible.

This 42kW boiler could not only help you save money**, but it could also potentially allow you to save space in your home as it is manufactured to be compact in size and capable of being easily fitted into a standard-sized kitchen cupboard. Additionally, this unit is built for simple installation, so your engineer could fit the boiler into your property quickly and easily.


Ratings & Reviews

The Worcester Bosch Greenstar 42CDi Classic has received a number of reviews and ratings, these include:

  • 5-star energy-efficiency rating
  • 5-star brand reliability rating
  • 5-star engineer score
  • 5-star customer score
  • Which? Best Buy

(Sourced from www.which.co.uk 07/11/2018)



Similar Alternative Models

At HomeServe, we aim to provide you with as many options as possible to help ensure that you select the right boiler for your home. As well as the Worcester Bosch Greenstar 42CDi Classic, you could also consider the following options:

1. Ideal Vogue C40

  • Backlit 3.5” LCD full colour display
  • Energy Saving Trust endorsed
  • Compact dimensions

2. Worcester Bosch 38CDi Classic

  • Same key features and functions as the 42CDi Classic, just with a lower kW output
  • Simple boiler controls
  • Instantaneous hot-water

3. Vaillant ecoTec Plus 938

  • Built-in two stage frost protection
  • Quiet mark accreditation
  • Integrated step by step wizard

If you’d like to get a price estimate for your new boiler installation, try our free online quote tool today.


**Source: energysavingtrust.org.uk. Saving calculated when replacing G-rated with A-rated boiler in a semi-detached house.

***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 is subject to an additional charge.