Tier 2 · Gas

Ariston boiler repair and service engineers in London

Italian gas boilers on sale now in combi, system and regular versions.

  • Fully insured and Gas Safe registered
  • Every fault diagnosed before we quote
  • You agree the price before we start
  • Our workmanship is guaranteed

Monday – Sunday, 7:00 AM – 10:00 PM · Out-of-hours emergency? Call 020 3576 5825

Ask for a price on your Ariston

Name, phone and postcode are all we need to start. Everything else can wait.

When do you need us?
Your address and more detail optional

Or call 020 3576 5825 WhatsApp +44 7447 575645

Your details are used only to handle this request. Privacy policy

The make

Ariston boilers

Ariston’s current UK range takes in combi, system and regular boilers, and you are more likely to find one in a flat or small home than in a large house. Water heating has long been part of the business too, so Ninja Plumbers engineers now and then find an Ariston unvented cylinder working next to the boiler.

The Ariston range

Ariston belongs to Ariston Group, an Italian company based in Fabriano, and sells gas boilers in the UK alongside a large range of water heaters. The Clas range is the value option and Genus the better-specified one; older Microgenus combis still turn up in London flats. The group also owns Chaffoteaux, the French brand behind a good number of older UK combis, so an ageing Chaffoteaux is a relative rather than a stranger.

Faults we often find on Ariston boilers

  • The usual combi faults: diverter, pressure and ignition
  • Boilers in small flat installations with little room to work
  • Unvented cylinders alongside that need a periodic check of their own
  • Microgenus and Chaffoteaux combis no longer economic to repair
  • Scale building on the hot water side from London’s hard water

This list reflects what Ninja Plumbers finds across Ariston boilers in general. It is not a diagnosis of yours, and we confirm any fault on site before giving a price.

Ariston servicing

As with most makes, the warranty is usually conditional on registration and yearly servicing; check your warranty terms. On a combi in a small flat, the engineer pays particular attention to scale on the hot water side. An unvented cylinder, whatever its make, needs its own annual check. Mention it when booking and we can cover both in one trip, which is worth it in a flat where parking and access are the hardest part.

Repair it or replace it?

On a Clas or Genus from the last ten years or so, most faults are worth repairing. Older Microgenus and Chaffoteaux combis are a harder call: a significant failure at that age is often better spent on a replacement, and we check the part can be obtained before quoting. If the combi is struggling to serve a flat that now has a second shower room, more than the broken part may need changing.

Our services

Work we do on Ariston boilers

FAQs

Questions about Ariston boilers

Do you also look after Ariston cylinders, not only the boilers?
Yes. An unvented cylinder calls for its own competence and its own yearly check, apart from the boiler service. People often forget it until water starts running from the discharge pipe.
Are Chaffoteaux and Ariston the same?
Same group, but a different make. Ariston Group owns Chaffoteaux, yet its boilers are a separate range with model numbers of their own. The data badge, not the group name, decides which parts fit.
How does an Ariston Clas differ from a Genus?
The Clas is the value range and the Genus the better-specified one. Both are normal gas boilers to service and repair. A more useful question is which fits your home, and in a small flat a Clas may be all you need.
Can you repair and service my Ariston boiler?
Yes. Our gas work is done by Gas Safe registered engineers, as the law requires for any gas boiler, whatever the make.

Problem with your Ariston?

Tell us the model and whatever fault code the display shows. We can often say what the likely problem is before an engineer is on the way.