"AC servicing" in the UAE describes anything from a full system strip to someone rinsing a filter in your bathroom and leaving in eleven minutes. Both get called a service and both get invoiced.
This is what the work should cover, so you can tell which one you bought.
The visit, step by step
Indoor unit
- Filters removed, washed or replaced, dried before refitting
- Evaporator coil cleaned — not just looked at
- Blower wheel and housing cleaned. A fouled blower quietly costs a large share of your airflow and it is the most commonly skipped item indoors
- Drain pan cleaned, drain line flushed and confirmed flowing — water poured through, not assumed
- Grilles and diffusers cleaned
- Electrical connections checked and tightened
- Thermostat operation and calibration
Outdoor unit
- Condenser coil cleaned. The single highest-value item on the visit, and the one a cheap quote omits
- Fan motor and blades checked
- Refrigerant pressures measured against ambient temperature
- Compressor current draw measured
- Contactor and capacitor inspected
- Mountings, isolation and pipe insulation checked
Performance check
- Supply and return air temperature difference measured and written down
- Airflow checked at every grille on ducted systems
- Anything faulty or deteriorating reported to you in writing before the technician leaves
How to tell whether yours was done
How long was he there? A standard residential split takes roughly 45 to 90 minutes done properly. Ducted systems with several grilles take longer. Under half an hour was not a service.
Did he go outside? If nobody touched the outdoor unit, the condenser was not cleaned — and in Al Ain that is the item that matters most.
Did he use gauges? Refrigerant pressure cannot be assessed by feel.
Did you get numbers? A proper visit produces readings — temperature differential, current draw, pressures. "It's fine" is not a reading.
Was there water? Coil cleaning is wet work. A technician who leaves with dry hands and a dry drip tray did not clean a coil.
Why the outdoor coil matters more here
An air conditioner rejects heat outdoors. The hotter the outside air, the harder that is. Al Ain is inland and runs hotter than the coast — the National Center of Meteorology forecasts inland highs of 38 to 44°C against 35 to 41°C coastal, and 48°C has been recorded here.
That means our systems operate close to the top of their design range for months. A condenser that would cope elsewhere with a partly blocked coil has no margin left here. It is why a filter-only "service" is close to worthless in Al Ain specifically, and why we say the outdoor coil is non-negotiable.
What the readings tell you
Temperature differential — the gap between air going in and air coming out. Low differential means restricted airflow, low refrigerant or a fouled coil.
Compressor current draw — worth logging visit on visit. A gradual climb across three services predicts a failure long before it happens. This is the single most useful thing a service visit produces and almost nobody asks for it.
Capacitor value — capacitors degrade slowly and then fail under load, which means August. Testing one in March costs almost nothing.
What to ask for
- A written report with the readings, not a signed job card
- Confirmation the condenser coil was cleaned
- Anything found that is deteriorating but not yet failed
- The filter interval for your property, not the manufacturer's generic figure
If you are not sure when yours was last done properly, that is what AC servicing is for.
Related: getting your AC ready for summer · AC not cooling — what to check first