By clicking a retailer link you consent to third-party cookies that track your onward journey. This enables W? to receive an affiliate commission if you make a purchase, which supports our mission to be the UK's consumer champion.
Ariston boilers review
Ariston is a budget-focused boiler brand. But while its boilers are cheap to buy, consumers need to know if they're reliable, too – otherwise, they will cost more on engineer callouts and repairs.
We've revealed the customer scores of gas boiler brands to Which? subscribers and non-subscribers alike, and Ariston has a middling rate of owner satisfaction, with a three-star customer score.
But our boiler brand customer scores only account for 20% of the overall brand review. We've also included the expertise of engineers and reliability data in our total score.
Which? members can read our full analysis to find out whether an Ariston boiler is a budget Best Buy.
Log in now or join Which? to find out the best boiler brands and see how Ariston boilers stack up against the competition.
Ariston gas boiler score
| Best Buy | Reliability | Customer score | Overall engineer score | Ease of sourcing | Ease of replacing | Ease of servicing | Build quality | Manufacturer support | Unbiased recommendation | Customer score |
|---|---|---|---|---|---|---|---|---|---|---|
Sign up to reveal Get instant access to this and all our scores and recommendations. Unlock tableFirst month £5, then £11.99 per month, cancel at any time Already a member? Log in |
Sign up to reveal
Get instant access to this and all our scores and recommendations.
Unlock tableFirst month £5, then £11.99 per month, cancel at any time
Already a member? Log in
From our May 2024 UK general public online survey of 10,028 people who are responsible for the maintenance of their boiler and our May-June 2024 survey of boiler engineers. This included 7,619 gas boiler owners, 1,387 electric boiler owners, 448 oil boiler owners and 230 Trusted Trader boiler engineers. The total score for all types of boiler ignores price and is based on: Reliability (40%) How many boilers bought in the past six years developed a fault, factoring in time until first fault and severity. Fault had to be repaired by a trained plumber or engineer. Engineer score (40%) Made up of 15% ease of sourcing parts, 15% ease of replacing common components, 15% ease of servicing, 10% manufacturer support, 20% build quality, 25% unbiased recommendations (barring incentivised engineers). Customer score (20%) How satisfied owners are and likelihood to recommend a brand. Sample size of customers (181). Best Buy threshold for gas boilers: 75%.
Some 75% of Ariston gas boilers owners are satisfied with their boiler, which isn't bad, but it's not up there with the highest scores, Worcester Bosch, Vaillant and Ideal.
It's overall customer score is also very middling, giving it a three-star rating.
But our customer scores only account for 20% of the overall total. We've also included the expertise of engineers and reliability data in our full review.
Find out the full results by subscribing to Which?.
Ariston engineers' reviews
Only Which? members can see engineers’ reviews of Ariston boilers.
We heard from 230 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 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 is 40% of our total brand score.
Which? members can see how engineers rated Ariston gas boilers on all of these tests by logging in, while others can sign-up to Which? to unlock our full analysis.
Ariston 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 that 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.
Join Which? for all the results.
Where to buy Ariston 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 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 Ariston 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 Ariston to find out more about its boilers.
Reduce energy bills
Use our free Home Energy Planning Service to build a personalised plan to make your home more energy efficient!
Start your plan