How often does an A/C split unit need cleaning vs. a professional service?

The short answer

An A/C split unit has two separate maintenance jobs on two separate clocks. Cleaning the filter is something you do yourself, and manufacturers who publish an interval for it — Daikin and Toshiba, among the brands checked so far — both say the same thing: every two weeks during heavy use. The professional service — refrigerant, coils, electrics — is a technician's job, and Daikin's own guidance puts that at least once a year. Toshiba's consumer materials cover filter cleaning but don't publish a professional-service interval at all, so that half of the answer varies by brand more than the filter-cleaning half does.

What you do yourself: the filter

Both Daikin and Toshiba tell owners to clean the filter every two weeks while the unit is in heavy use, and to do it more often if there are pets, smokers, or allergy sufferers in the home. Toshiba's guidance also recommends running the unit's own self-clean function on the same fortnightly schedule, where the model has one.

The filter itself is normally washable and reusable — there's no part number to buy or replace, just a rinse and a dry before it goes back in. That's also why this is the half of the job every manufacturer expects the owner to do: it needs no tools and no training, just regularity.

What needs a technician: the professional service

A professional service checks what a filter clean can't: the refrigerant charge, the condition of the internal coil, the drain, and the electrical connections. Daikin's own maintenance guidance recommends this at least once a year, ideally in spring before the unit sees heavy summer use, or in autumn before winter heating season — and it specifically flags that dusty or coastal environments may call for more frequent inspections than that baseline. That's worth noting for most of Greece, where salt air and summer dust are the norm rather than the exception.

Toshiba's own consumer-facing cleaning guidance doesn't state a professional-service interval at all — it only covers what the owner does. If you own a Toshiba unit, the interval to follow is whatever your specific model's manual or installer states, not a number this guide can responsibly give you.

The filter clean keeps air flowing. The professional service is what catches a slow refrigerant leak or a clogged drain before it becomes a bigger repair — two different jobs, and skipping one doesn't substitute for the other.

Before you rely on this

This reflects Daikin and Toshiba specifically — the brands in Epimeleia's catalogue whose own published consumer guidance states a maintenance cadence — not a universal requirement across every brand, and not a legal inspection requirement the way ΚΤΕΟ is for a car. Other manufacturers may state different intervals, or none at all. Check your own unit's installation manual or ask your installer for the figure that applies to your specific model.

Track it in Epimeleia

Add the split unit as an item under the property and set up two separate reminders, since they run on different clocks: one for the filter clean (every two weeks, or whatever your manual states) and one for the professional service (annually, or your manual's interval). Attach the technician's report to the service reminder each time — useful for a warranty claim, and for whoever services the unit next to see what was done and when.