Ariston boiler repair & replacement
Clas, E-Combi and Genus repairs and replacements.
Ariston boilers
Working on Ariston in the West Midlands
Ariston combis — mainly the Clas, E-Combi and Genus ranges — turn up regularly in Midlands flats and smaller houses, often fitted by developers for their compact size.
They're competent boilers with reasonable parts support. As with most Italian-built units, the main watch-out is availability of specific components rather than the repair itself.
We cover Halesowen, Dudley, Stourbridge, Birmingham, Solihull, Wolverhampton, Bromsgrove, Kidderminster and the wider West Midlands.
Ranges
Ariston models we see most
Clas / Clas One
The mainstream Ariston combi in UK homes.
E-Combi / E-System
Budget-friendly current range.
Genus / Genus One
Premium range with better modulation and controls.
Microgenus
Older combis — parts getting scarce.
Common faults
What goes wrong with Ariston boilers
5P1 / 501 — ignition failure
No flame detected. Gas supply, electrodes or condensate blockage.
1P1 / 108 — low pressure
Below minimum. Refill; persistent loss means a leak or failed vessel.
1 01 — overheat
Poor circulation from sludge or a failing pump.
Hot water dropping cold
Plate heat exchanger scaling or a diverter valve fault.
Showing a code on the display? Look it up in our fault code guide before you call — some of them you can clear yourself in ten minutes.
Repair or replace
Our honest view
Clas, E-Combi and Genus units under ten years old are worth repairing. Microgenus and older units are usually better replaced given parts availability.
Worcester Bosch Greenstar or Viessmann Vitodens, both with excellent local parts support and up to a 12-year guarantee.
Our diagnostic visit is £99 inc VAT and it comes off the bill if we carry out the repair. You get a fixed price before we touch anything — no hourly rates and no surprises on the invoice. We’re Gas Safe registered, Which? Trusted Trader endorsed and rated 4.9 across 206+ reviews.
Ariston questions we get asked
Do you repair Ariston boilers?
Yes — Clas, E-Combi, E-System and Genus ranges. We confirm part cost and availability on the diagnostic visit.
How much is an Ariston repair?
Typically £130–£350 inc VAT with a fixed price agreed before any work starts.
Book it in
Get a price or an engineer out
Step 1 / 5
60 second boiler quote
No callbacks unless you want one
What can we help with?
Pick the option that fits — we'll tailor the next questions.
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