At peak summer in Khamis Mushait, with temperatures above 42°C, an AC blowing warm air is worse than a completely dead unit — you are consuming electricity with no benefit. This problem has specific, diagnosable causes that can almost always be resolved in a single visit.
At 2,200m above sea level, refrigerant behaves differently than at coastal elevations. The compressor operates in lower-density air, which raises its operating temperature and accelerates refrigerant loss through micro-leaks. In Abha, gas level is always the first thing we check.
Causes — Most to Least Common
1. Low Refrigerant (Gas)
The leading cause in this region. It happens gradually — you may notice the AC is cooling less than before. In Jazan, coastal humidity makes this problem more apparent because the unit is already fighting a higher moisture load.
- Air is slightly cool but not adequately cold
- Indoor unit occasionally frosts or freezes
- Room takes much longer than usual to reach set temperature
2. Clogged Air Filter
In Abha, spring dust storms can clog filters within weeks. A blocked filter chokes airflow, which freezes the evaporator coil and stops effective cooling. Fix: clean the filter — you can do this yourself at no cost.
3. Frozen Evaporator Coil
Usually caused by low gas or restricted airflow. The very cold coil freezes condensation into an ice block that blocks airflow entirely. In Jazan, this is more pronounced due to high coastal humidity increasing condensation rates.
4. Compressor Problem
The compressor is the heart of the AC. If it is operating at partial capacity or generating insufficient pressure, cooling is weak. At peak summer in Khamis Mushait, weak compressors collapse completely under maximum load.
A family in Al-Wadi district reported their unit running but not cooling. On arrival, our technician measured gas level at 55% of correct charge. We recharged the refrigerant and sealed a micro-leak at the pipe joint. The unit was cooling fully within 90 minutes of the visit.
| Symptom | Most Likely Cause | Repair Time | Estimated Cost |
|---|---|---|---|
| Warm air + grey filter | Blocked filter | 30 min | Free (cleaning) |
| Warm air + outdoor unit noise | Low refrigerant | 60–90 min | SAR 200–400 |
| Warm air + frozen indoor coil | Coil freeze | 45–60 min | SAR 150–300 |
| Warm air + clicking compressor | Compressor issue | 90–120 min | SAR 400–1,200 |
What to Do While Waiting for the Team
- Switch the AC off for 30 minutes if the coil appears frozen — this allows natural defrost
- Check the filter — if dirty, clean it while you wait
- Do not repeatedly lower the set temperature on the remote — it will not help if the problem is in the gas or compressor