Coastal Humidity
Dammam sits directly on the Gulf coast, with average year-round humidity of 60–85%. and similar to Khobar. But Dammam's older housing stock means the humidity problem is often more severe in practice.
What humidity does to a washing machine:
- Door seal mould — the fold of the door seal traps moisture, which never fully dries in Dammam's humidity. Black mould begins growing within weeks.
- Control board corrosion — humidity penetrates the control board's conformal coating, corroding PCB traces and component pins.
- Door lock assembly corrosion — the door lock's metal components corrode, causing lock failures and error codes.
- Timer camshaft jamming (older washers) — humidity hardens the lubricant in mechanical timers, jamming the camshaft.
- Bearing corrosion — in older washers where the bearing seal has degraded, humidity accelerates bearing corrosion.
Dammam failure time:
| Component | Dammam Failure Time | — |
|---|---|---|
| Door seal mould | 2–6 weeks | 2–4 months |
| Control board (humidity) | 5–8 years | 8–12 years |
| Door lock assembly | 4–6 years | 6–10 years |
| Timer camshaft (older) | 3–5 years | 6–10 years |
The Dammam reality: In our experience in Dammam, Al Khobar and Dhahran has the highest rate of door seal mould and control board corrosion of any city we serve. This is the defining characteristic of Dammam washing machine repair.