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Which boiler brand to buy in 2019

By Matthew Knight

Find out which is the most reliable boiler brand, or if a Glow-worm boiler will outlast a Baxi. Then pick a reliable boiler using our boiler reviews 

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

We asked 12,191 boiler owners about the brand of boiler they own so that we can tell you which are the best and worst boiler brands.

Our unique research shows you which brands are the most reliable, and which are likely to let you down during the cold winter months. 

In our survey we found that problems with boilers are common: 22% of owners with boilers bought since 2012 have experienced faults with their gas or oil condensing boilers. Two thirds have needed to have their boiler repaired at least once since they purchased it and one in five have needed two repairs. 

The best way to avoid potential boiler problems is to buy a boiler from a reliable brand. Alongside that, make sure you get your boiler serviced annually.

Gas boiler brands rated for reliability
Gas boiler reliability table
Brand Reliability rating


Member Content
Oil boiler brands rated for reliability
Brand Reliability rating
Worcester Bosch


Member Content

Our research

In May 2018 we surveyed 12,191 Which? members online about the problems they had experienced with their main gas or oil central heating boiler. The reliability score is based on whether people who own boilers up to six years old have ever had to have their main boiler repaired since they bought or acquired it.


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