Worcester Bosch boilers review

Our latest boiler survey reveals reliability and customer and engineer opinions for UK-based boiler brand Worcester Bosch.

Customer satisfaction for Worcester Bosch gas boilers is high - plus it's one of only four brands to score top marks among customers, who are highly satisfied and very likely to recommend boilers from the brand.

This makes up 20% of our overall assessment. We've also asked 198 expert engineers to score Worcester Bosch gas boilers on six key factors. On top of that, we've also measured the reliability of these boilers to work out what proportion of them develop faults in the years after being purchased. 

Only Which? members can access our full results and find out how Worcester Bosch gas boilers stack up against the competition. Log in now or join Which? to access the full results.

Worcester Bosch gas boiler score

Customers who bought their boiler in the past six years were 91% likely to be satisfied, with 52% saying they were 'very satisfied'. Only 3% of Worcester Bosch gas boiler owners wouldn't recommend that somebody else buys one. 

We've revealed the customer score of every gas and oil boiler brand we've reviewed, but only Which? members can access the full review that includes objective reliability measures as well as the opinions of expert engineers.

Log in now or join Which? to see the whole picture, including our full verdict.

Engineers' review of Worcester Bosch

We heard from 198 expert engineers who scored boiler brands for several aspects. We asked them to score gas boiler brands on the following:

• The ease of sourcing spare parts 
• How easy it so to change a common component (a heat exchanger)
• The ease of servicing the brand's boilers
• The build quality of the brand's boilers
• The quality of technical support provided by the manufacturer
• Whether or not engineers would recommend the brand to consumers (we filter out incentivised and brand affiliated engineers).

We aggregate all of these scores and use them to create our 'overall engineers' score', which makes up 40% of our total brand score.

Only Which? members can see how engineers rated Worcester Bosch gas boilers on all of these tests by logging in, while others can sign up to Which? to unlock our full analysis.

Worcester Bosch gas boiler reliability

Boilers are major purchases you should only need to make once every 10-20 years. You can keep yours for longer if you get it regularly serviced and if you get faults fixed quickly.

We've asked people who bought a boiler in the past six years about whether it's fault-free. When faults are reported, we measure how serious the fault was, how long it took for the first fault to happen, and we make sure it was fixed by an engineer.

Using this data, Which? members can see which brands produce boilers that are less prone to faults than others.

Regular servicing is key to an efficient, long-lasting boiler. See our guide to getting the best boiler service.

Worcester Bosch gas boiler costs

Combi boilers

Regular boilers

System boilers

Where to buy Worcester Bosch boilers

It's easy to rush into making a decision, especially if your boiler breaks down in winter, but we recommend getting a couple of quotes from a qualified heating engineer and comparing costs. Our Trusted Trader service can link you up with vetted boiler installers in your area.  

You could also buy a boiler yourself and hire an installer, though make sure you seek expert advice before doing so, to have your current heating system assessed and identify the type of boiler that meets your specific needs. If you buy a boiler without having an installer lined up, you could find yourself struggling to find someone willing to set it up for you. An installer may have access to trade or wholesale prices, and will be able to recommend a model based on a holistic assessment of your home and heating system.

Only a Gas Safe Registered engineer/installer can install a new boiler: it's both dangerous and illegal to do so yourself if you're not qualified.  

Where to buy a boiler – find out what your options are

Are Worcester Bosch boilers efficient?

New boilers must be A-rated, but how efficiently your boiler works in practice depends on several factors, including how you use it and how well it's installed. Use a Which? Trusted Trader for your boiler installation and regular maintenance.