An air conditioner dripping onto the floor mid-heatwave feels like a breakdown, but nine times out of ten nothing inside the machine has failed. The water is normal; where it went is the problem — and in Malta the culprit is usually the same ten-euro fix.
Where the water comes from
Every cooling AC dehumidifies. In Malta's humid summer air, a hard-working split unit can pull litres of water a day out of a room. That condensate collects in a tray under the indoor coil and leaves through a small drain pipe — usually to the outside, sometimes to a shaft. Everything about "AC leaking" is really about that tray and pipe.
The usual suspects, in Malta order
- Blocked drain line. Dust, mould jelly and the occasional insect nest clog the narrow pipe; the tray overflows into your room. This is the overwhelming majority of Maltese cases, and humid heat plus dusty air is exactly the recipe for the sludge.
- Filthy filters and coil — heavy frost forms, then melts in volumes the tray cannot handle. If you also have weak airflow, this is likely; the not-cooling checklist overlaps here.
- Sagging or badly-routed drain pipe from the original installation — water pools until it finds the indoor exit. Common where units were fitted cheap and fast.
- Cracked or misaligned tray, or in the end a genuine refrigerant issue causing icing — the minority cases that need a technician's gauges.
What you can safely do
- Switch the unit off at the remote and the isolator — water and electronics are already too close.
- Photograph where the water emerges: front edge, side, along the trunking. It tells the technician a lot.
- Rinse the filters if they are visibly dirty and you can reach them safely.
- If you can see the drain outlet outside (a small pipe often dripping happily on hot days), check whether it is dripping at all while the leak happens indoors. A dry outlet during an indoor leak equals a blocked line — mystery solved.
What not to do: poke wires or compressed air into the drain from inside, or run the unit "to see if it stops". An overflowing tray sits directly above live electronics.
What the fix costs
Clearing a condensate line is a quick professional job — typically €30 to €60, often folded into a full service, which the unit probably needed anyway if the line was clogged. Re-routing a badly installed drain runs €50 to €120. Post the symptoms and photos on Qabbad's AC page and technicians covering your locality reply with availability — in summer, the ones marked as accepting urgent work matter.
Preventing the encore
Ask the technician to flush the line with the anti-slime treatment during each annual service, and keep filters clean through the humid months — that alone starves the drain sludge of its raw material.
Frequently asked questions
Why is my AC leaking water inside in Malta?
Most commonly, a blocked condensate drain: the water your AC removes from humid air cannot exit, so the collection tray overflows indoors. Dirty filters causing coil icing are the next most likely cause.
Is AC water dripping dangerous?
The water is clean condensate, but it overflows directly above the unit's electronics and your wall — so switch the unit off and get the drain cleared promptly. Ceiling stains and mould patches cost more than the fix.
How much does it cost to fix a leaking AC in Malta?
Clearing the drain line typically costs €30 to €60. If the diagnosis turns out to be icing from low refrigerant, expect a leak-find and regas at €80 to €200 instead.
Can I use the collected AC water for plants?
Condensate is distilled-ish but can carry traces from the coil and tray. Fine for ornamental plants; skip the herbs.