Why Your Aircon Isn't Dehumidifying: Latent Heat, Airflow Velocity & Clogged Coils

### 💧 The "Cold but Sticky" Enigma: Understanding Latent vs. Sensible Heat In Singapore, outdoor relative humidity frequently exceeds **80% to 90%**. In this climate, your air conditioner is designed to perform two distinct thermodynamic functions: 1. **Sensible Cooling:** Reducing the physical temperature of the room air (measured in degrees Celsius). 2. **Latent Cooling:** Extracting atmospheric moisture (water vapor) from the air to maintain comfortable humidity levels (**50% to 60% relative humidity**). If your air conditioner is running and the room feels cold but sticky, damp, or clammy, the latent cooling phase is failing. This means the system is failing to dehumidify your space properly, creating an environment ripe for mold germination, skin stickiness, and discomfort. As Singapore's specialized HVAC diagnostics experts, **Sky Blue Aircon** presents a detailed scientific guide on why air conditioning loops fail to dehumidify and how to restore perfect humidity balance. --- ### 🔍 How an Aircon Extracts Indoor Moisture Your split-system aircon removes moisture through condensation. * **The Condensation Phase:** Raw, humid room air is drawn over the fancoil. * **The Dewpoint Boundary:** The evaporator fins are kept below the dewpoint of your room air (typically around **12°C to 14°C**). As the warm, humid air contacts these cold metal fins, water vapor drops out of suspension, condensing into liquid droplets that flow down the drain. Keep your air dry and breathable with **Sky Blue Aircon Engineering Pte Ltd** today.