AC mould problem despite cold air: dehumidifier or AC upgrade?« Back to Previous Page

Good question. This is a classic issue we see in Dubai villas, especially in areas like Mirdif. Your AC running constantly but failing to control humidity is a clear sign of a system imbalance. Cold air does not automatically mean dry air.

The core problem is likely that your AC unit is oversized or its cooling cycle is too short. It quickly satisfies the temperature thermostat but doesn't run long enough for the indoor coil to effectively condense and remove sufficient moisture from the air. This creates a cold, damp environment—perfect for mould growth on organic materials like leather.

For a long-term solution, you need to address the root cause. Simply adding a portable dehumidifier to the closet is a temporary fix that treats the symptom, not the disease. The moisture will simply migrate from elsewhere.

The most effective approach is a professional assessment of your AC system. We would check for correct sizing, refrigerant charge, fan speed settings (it should be on low for max dehumidification), and ensure the drain pan is not blocked. An upgrade to a modern inverter AC system or installing a whole-home dehumidifier that integrates with your existing HVAC is often the definitive solution for UAE's extreme climate. These systems are designed to handle both sensible (temperature) and latent (humidity) loads independently.

Given that mould is already present on your belongings, this indicates a persistent issue. I strongly recommend a professional inspection to prevent further damage to your property and health.

For a thorough assessment and a permanent fix, please call our experts at 800-MOLDS or email hello@saniservice.com. We can diagnose the specific fault with your system and recommend the most effective upgrade path.