Potterton boilers review

Potterton has a long and storied history in the UK boiler market. In recent years, it was bought by Baxi, but it still offers its own ranges of combi, regular and system boilers.

While it's one of the better boiler brands you can buy from, it's slipped down our rankings over time as it struggles to maintain a rival-beating customer score – it got just three stars in our 2025 survey. But customer score only represents 20% of the overall total score.

Only Which? members can access our full results. Log in now or join Which? to find out the best boiler brands and how Potterton boilers stack up against the competition.

Potterton gas boiler score

Potterton boiler owners are mainly satisfied: 79% report that they're happy with their boiler, just three percentage points below the average satisfaction rate.

While 20% of that comes from customers' opinions, 80% of the overall score comes from our boiler engineers survey (40%) and reliability data (40%) from our latest survey about how many Potterton boilers stay fault-free.

 Log in now or join Which? to see the full set of results.

Potterton boiler engineers' review

Only Which? members can see engineers' reviews of Potterton boilers.

We heard from 225 expert engineers who scored boiler brands on several tests. We asked them to score gas boiler brands on the following:

• The ease of sourcing spare parts. 
• How easy it is 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 these scores and use them to create our overall engineers' score, which is 40% of our total brand score.

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

Potterton gas boiler reliability

Boilers are major purchases you should only make once every 10 to 20 years. You can keep yours for longer if you get it regularly serviced and 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 fault than others.

Sign up for all the results.

Where to buy Potterton 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, although 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 dangerous and illegal to do so yourself if you're not qualified.  

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

Are Potterton 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.

Visit Potterton to find out more about Potterton boilers.