AC Emergency Guide: What To Do Right Now

Most AC problems can wait until morning. A few cannot. This is the short version of what to do in the moment, ordered by how urgent it actually is rather than how alarming it feels.

Burning smell or visible sparks — cut the power

This is the one genuine emergency on the list. A burning or hot-electrical smell means something is overheating: a motor winding, wiring, or the compressor.

Do this now: isolate the power at the dedicated AC isolator switch (usually a red or white switch on the wall near the indoor unit or out on the balcony). If you can't find it, switch off the AC circuit at your DB box. Don't wait to see whether the smell fades.

Do not restart it to "check if it's still doing it". If you see actual sparks or smoke, leave the power off and call us or, if there's any fire risk, Civil Defence on 997 first.

The breaker keeps tripping — reset once, never twice

A tripped breaker is sometimes a one-off surge. Reset it a single time. If it trips again immediately, that is a short circuit, and forcing it back on repeatedly is how an electrical fault becomes a fire.

Do this now: leave the breaker off, leave the AC off, and book an inspection. Repeated tripping usually points to a failed capacitor, a seized compressor, or damaged wiring — none of which get better with another reset.

Water pouring from the indoor unit — switch off and catch it

Not dangerous, but expensive fast. Persistent water means a blocked condensate drain or a frozen coil, and what it damages is your ceiling, not your AC.

Do this now: switch the unit off, put a container underneath, and keep it off until it's cleared. Running it "a bit longer" will not unblock the drain — a blocked line stays blocked, and every hour adds to the ceiling repair.

Full detail on causes and why ceiling stains are usually a different problem: AC leaking water.

Blowing warm air — check two things before calling

Least urgent, most common. Two checks take under a minute and resolve it more often than you'd expect.

1. Mode and setpoint. Confirm the unit is on Cool, not Fan, and that the set temperature is genuinely below the room temperature.
2. Rest the compressor. Switch off for 30 minutes, then restart. If it cools and then fails again, the capacitor or refrigerant charge is the likely cause.

If neither helps, the diagnostic path is covered here: why your AC isn't cooling.

The two habits that prevent most of this

Clean the filters every two weeks. Pull the mesh filters out, rinse under a tap until the water runs clear, dry them completely before refitting. Fitting a damp filter grows mould. This one habit prevents a large share of the call-outs we attend, and it costs nothing.

Book a professional service every three to four months. Not annually — Dubai's dust load and near-continuous runtime make annual servicing insufficient. A proper visit clears the condensate drain before it floods, and pressure-washes the outdoor condenser coil, where baked-on dust quietly destroys efficiency.

Three settings worth getting right

• Set 22-24°C, not 16°C. A lower setpoint does not cool the room faster. It runs the compressor longer, risks freezing the coil, and inflates your DEWA bill for no gain in comfort.
• Keep the outdoor unit clear. It rejects heat by moving air. Boxes, covers or debris stacked around it force the compressor to work against itself.
• Keep doors and windows shut while cooling. Humid outside air meeting cold grilles is what produces the condensation and ceiling mould people blame on the AC itself.

When to call rather than wait

Call immediately for a burning smell, sparks, or a breaker that trips twice. Call the same day for water actively coming out of a unit, or for a cold room or commercial kitchen losing temperature. Everything else can be booked normally.

Emergency call-outs: gas leak repair, compressor replacement, cold room and freezer repair. For prevention, see duct cleaning, coil and filter cleaning, or a scheduled maintenance contract.