If the AC runs most of the day, it is the bill. Dirty coils, leaking ducts, 18°C set-points, empty rooms cooled with doors open, and failing compressors that run without cooling all show up as dirhams.
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Problem
High electricity bill from the AC
If the AC runs most of the day, it is the bill. Dirty coils, leaking ducts, 18°C set-points, empty rooms cooled with doors open, and failing compressors that run without cooling all show up as dirhams.
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Causes
- Packed coils forcing long run-time
- Ducts leaking into the hot ceiling
- Wrong set-point and fan auto icing
- Old low-efficiency windows and sun load
- Low gas making the compressor work without capacity
What you can safely check
- Set 23–25°C, not 18°C.
- Close unused rooms properly or do not cool them.
- Wash filters.
- Shade outdoor units if possible without blocking airflow.
- Compare days when nobody is home — a still-high bill means plant or a unit left on.
When to get a technician
Filters are clean, set-point is sensible, and the bill still jumped versus last year with similar occupancy.
Use the electricity cost calculator on this site for a ballpark. Then book maintenance. We will not promise a fake percentage saving. We will tell you if the ducts are dumping air or the outdoor is blind with sand.
Related: AC Maintenance / Servicing from AED 180 in Dubai, Abu Dhabi & Al Ain.
FAQs
Does 1°C matter?
On a unit that runs all afternoon, yes. Each degree lower is extra run time in UAE heat.