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5 July 2021

Worcester Bosch oil boilers rated

Find out how reliable Worcester Bosch oil boilers are with the results of our unique Worcester Bosch oil boiler owner survey. Once you have the lowdown on Worcester Bosch oil boilers, you can look at its range in our boiler reviews
Matthew Knight

British manufacturer Worcester Bosch first started making domestic oil-fired boilers in 1962. Today it employs more than 2,000 people in Worcester and Derbyshire and is part of the multinational Bosch Group. 

Worcester Bosch has 30 oil-fired boilers in its current range to suit different types of home, including internal and external installation sites. The Greenstar Heatslave combination boilers are available as floor-standing internal or external units in three heat output ranges for smaller homes.

There are three floor-standing Greenstar Camray ranges of heat-only boilers for installation in a kitchen, garage or external site. Three heat outputs are available to supply a wide range of house sizes. The Greenstar Utility range is suitable for a utility room or garage. The Greenstar Danesmoor wall-mounted range is more suitable for space-pressed smaller houses, but there is also a floor-standing version available. 

All of the Worcester oil fired heat-only boilers can be used alongside Worcester solar installations.

The Greenstar Camray range of system boilers can be installed in a kitchen, garage or external site. Three heat outputs are available to supply a wide range of house sizes. Like the heat-only boilers, they can be used alongside the Worcester Greenskies solar water heating range.

You can find more details about the individual products in these ranges in our boiler reviews.

Which? verdict on Worcester Bosch oil boilers

Here, you'll find all of our survey results for Worcester Bosch oil boilers, including how reliable they are and what Worcester Bosch oil boiler owners really think about their boiler. 

The reliability and customer score are based on responses from a May and June 2020 survey of 7,500 boiler owners. Engineer recommendation, build quality, availability of parts and spares, and ease of fixing a common fault and ease of servicing are based on responses to a June 2020 survey of 153 Which? Trusted Traders heating engineers.

Which? members can log in to see what owners make of Worcester Bosch oil boilers. If you're not already a member, try Which? for access to the scores in the table below.

Overall score
Customer score
Engineer recommendation

How much do Worcester Bosch oil boilers cost?

Worcester Bosch oil boilers cost between £1,185 and £2,410, depending on their size and type.

Choosing the best Worcester Bosch oil boilers

You can have a Worcester Bosch oil boiler installed by a registered Worcester Bosch boiler engineer. The best way to find one is by contacting Worcester Bosch using the details below. 

Worcester warranties and installation

Worcester boilers are supplied through trade installers, not sold directly by Worcester. Worcester Accredited Installers are not employed by Worcester but are accredited by the Worcester-Bosch Group to install its products. Many accredited installers specialise in Worcester products and most can offer extended guarantees.

If you have any problems with your new appliance during the manufacturer’s guarantee period, you should contact your installer first to ensure it is an appliance fault. During this period, Bosch Thermotechnology Ltd (the Worcester parent company) will repair any components that are faulty or defective for free.

The guarantee must be registered within 30 days of installation.

Unusually, Worcester offers a 10-year guarantee on the heat exchangers in its boilers, provided the boiler’s installation meets strict criteria on the sizing and positioning of the boiler – basically following best-practice guidelines. Otherwise it offers a two-year parts and labour warranty.

Worcester servicing and repairs

Worcester claims to have 300 service engineers across the UK and Ireland.

Worcester offers its own Service Plan for boilers that are out of guarantee. This covers up to £1,500 of approved boiler repairs every year, carried out by Worcester boiler engineers. It also includes a yearly service to ensure your boiler is running efficiently and safely.

Find out how Worcester's service plan customers rate the service they receive in our full .

Worcester service plan

0844 892 2332

Worcester contact details

You can contact Worcester at the following address:

Bosch Thermotechnology Ltd
Cotswold Way, Warndon
Worcester, WR4 9SW

Or through the Worcester website: www.worcester-bosch.co.uk

Worcester customer service

0844 892 3000

Worcester technical queries

0844 892 3366