The warmer the air is, the more moisture it is capable of holding. Relative humidity is the percentage of moisture in the air compared to the amount of moisture it can hold. When the humidity is low, sweat evaporates from your body more quickly. This allows you to cool off faster. High humidity conditions do not allow sweat to evaporate as well because the air is at its maximum capacity.
Humidity is also a form of latent heat.
If the air has more humidity, it also has more latent heat. Refrigerant Refrigerants are substances used by air conditioners to transfer heat and create a cooling effect. Air-conditioning systems use specially formulated refrigerants designed to change state at specific temperatures providing optimum cooling. HCFC stands for hydrochlorofluorocarbon. This is currently the most common refrigerant used by air- conditioning systems.