Soak the aluminium mesh filters flat in hot water with a non-caustic degreaser rather than putting them through a dishwasher. If a replacement is hard to find under the Ariston badge, the same part is frequently listed under Hotpoint or Indesit.
Ariston hoods are straightforward Italian appliances, mostly undermount and fixed canopies with aluminium mesh filters. The general method, filters out, soaked flat, then the impeller housing behind them, is on our rangehood cleaning guide.
Parts cross-reference across the group
Ariston sits in the Whirlpool group alongside Hotpoint and Indesit, and hood components frequently appear under more than one badge.
This matters more on hoods than on any other appliance, because hood filters lose their labels faster than anything else in a kitchen. They sit in a warm greasy environment, any sticker gives up within a few years, and replacements are listed by dimension rather than by name.
So measure the filter rather than searching the badge. If an Ariston-branded part seems unobtainable for an older hood, the equivalent Hotpoint listing has a fair chance of being the same component.
Ducted or recirculating
A large share of these went into apartments, where ducting outside is frequently impossible, so many are recirculating and carry a charcoal filter behind the metal ones. Charcoal is a consumable replaced every six to twelve months and never washed.
If nobody has replaced yours, the hood is doing nothing for odour and has not been for some time. On an Ariston of typical age in an apartment, that is the most likely single finding.
Age, and what a soak will not fix
Most of these are a decade or more old. On a hood that has run that long without attention, mesh filters frequently load solid through their interior layers, and no amount of soaking reaches the middle.
That is not a cleaning failure. It is a filter that has worked far longer than intended, and replacing it costs a fraction of what letting the fan do the filtering costs.
See how to clean an Ariston oven and how to clean an Ariston cooktop, which will be the same age.
Slide-out models and the visor channels
A good share of the Ariston hoods sold here are the slide-out type, fitted under a cupboard with a visor that pulls out over the hob and pushes back flush when not in use.
The visor runs in side channels, and those channels fill with a mixture of fat and dust until the slide becomes stiff. The consequence is predictable and quiet: people stop pulling the visor out, the hood runs with its intake half covered, and it extracts very little while sounding entirely normal.
If yours has become stiff, that is not the mechanism failing. Clean the channels with a cloth and a non-caustic degreaser, dry them, and it will generally move freely again. It is a five minute job that restores extraction people have been living without for years without realising it.
What actually goes wrong
A parts search under the wrong badge.
An original charcoal filter in a recirculating apartment install.
Filters loaded solid and past soaking.
Grey mesh from a dishwasher cycle.
Should you do it yourself?
Do it yourself for the filters, replacing rather than persisting if a soak does not clear them.
Get someone in for the impeller housing, or to establish whether the hood ducts outside at all.