WORCESTER ACCREDITED


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Mark Berry Plumbing & Heating Limited in North Devon, is an accredited Worcester installer, meaning we have back-up and guarantee programs from one of the worlds largest engineering companies.

We are proud to be able to offer this service and peace of mind to our customers. To find out more, please read below:




A combination or ‘combi’ boiler is both a high efficiency water heater and a central heating boiler in a single compact unit. Combi boilers heat water directly from the mains when you turn on a tap, so you won’t need a hot water storage cylinder or a cold water storage tank in the roof space.

They are also very cost-effective and energy-efficient as water is heated instantly rather than being heated and then stored in a cylinder. An added benefit is that hot water is delivered at mains pressure, which means that you could get a powerful shower without the need for a separate pump.

  • Compact sizes make combi boilers perfect for smaller properties
  • Ideal where there is little or no loft space
  • No need for a hot water cylinder allows increased living space
  • No cold water storage tank frees up a loft for conversion
  • No risk of loft pipework freezing
  • Less pipework in the home makes installation typically cheaper

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Regular boilers (sometimes known as traditional, conventional or heat only boilers) are ideally suited to homes that already have a traditional heating and hot water system which is linked to a separate hot water cylinder. These boilers also need a cold water storage tank in the loft to feed the hot water cylinder as well as a tank that maintains the water level of the central heating system.

A regular boiler may be the best option for replacing an existing boiler if the property has an older radiator system, as it might not be able to cope with the higher water pressure that is delivered by system or combi boilers.

  • Perfect for homes where a lot of hot water is used at the same time
  • Ideal where there are two or more bathrooms
  • A good option in areas where water pressure is low
  • Compatible with solar water heating systems for a lower carbon footprint and lower energy costs

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System boilers require a cylinder for storing hot water, however the major heating and hot water system components are built into the boiler itself, making it quicker and easier to install. In addition, there is no need for a tank in the loft, so it can be an option in a home with little or no loft space or where the space is earmarked for a conversion.

These boilers are also compatible with solar water heating systems, which deliver environmental benefits as well as lower energy bills.

  • Ideal for homes with more than one bathroom
  • Constant supply of hot water to any number of taps at the same time
  • No need for a loft tank, freeing up space and eliminating worries about leaks or frost damage
  • Economical to run
  • Built-in components makes installation quicker and neater

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What is a Worcester Accredited Installer?

Worcester Accredited Installers (WAIs) are accredited to install Worcester boilers, solar water heating, and heat pumps to the highest standard. Although these heating engineers are not directly employed by us, we are happy to promote their businesses to you through our Find an installer search.

What can Worcester Accredited Installers offer me?

As well as specialising in Worcester’s products, these heating engineers can also offer:

  • Extended guarantees* between 5 and 10 years, depending on the installer and the product
  • Advice and prices on a new Worcester boiler, solar water heating system, heat pump or underfloor heating installation
  • Central heating installation and heating system tips
  • Boiler servicing and maintenance
  • Boiler repair or replacement

Extended Guarantees

Our standard product guarantee period is usually 2 years. Many of our accredited installers can offer longer guarantee periods ranging from 5 to 10 years.

We also run national guarantee promotions, so please check this website or ask your installer for up-to-date offers and product information.

Why and how does Worcester, Bosch Group offer accreditation to some installers?

We want to provide homeowners with peace of mind when they are upgrading their home heating system. We invite heating engineers who we deem as reputable, quality-conscious and representing value for money to join our Worcester Accredited Installer scheme.

The installers must have relevant Gas Safe, OFTEC and/or MCS approval and to be a Worcester Accredited Installer for certain products, they must also have attended Logic certified training courses on our boilers, solar thermal systems, heat pumps and/or underfloor heating.

We check the installers’ Gas Safe, OFTEC and/or MCS accreditation on a regular basis. However we always recommend to homeowners that they verify these membership statuses with the awarding bodies directly via their websites.

Why do I need a heating and hot water installer?

Due to the complexity of modern heating systems, installation, service or repair work should only be undertaken by a qualified heating engineer.

This is why most manufacturers of heating and hot water appliances such as boilers, solar thermal and heat pumps only supply through trade merchants, rather than directly to end users. It is also why we are unable to publish product prices on our website.

Who are the ‘National installers’ also listed on Find an installer?

These are a selection of larger independent installation companies who are able to offer nationwide coverage and support.

How can I give Worcester feedback about the installers?

If you ask an installer for advice via our website, we do contact you a few days later to see how you got on. However, we are happy to hear from you at any time so please do get in touch to tell us about your experience of using one of the listed installers.