present invention t dis may be the minimum temperature of the air over a predefined duration of time for example 2 hours 12 hours or 24 hours the values of t dp sen and t dis are then compared in decision block 208 if t dis is less than t dp sen then the air stream can not be humidified since any addition of water to the air stream will result in condensate on the one or more cooling coils during the subsequent cooling cycle thereby removing the moisture added by the humidifier if t dis is greater than t dp sen then water may be added to the air stream by enabling the humidifier 206 thus t dis effectively becomes the upper limit of the dew point temperature within the space even if t dis is less than the dew point temperature set point t dp set fig4 illustrates the process for one embodiment of the present invention if decision block 202 indicates that the cooling system is u201c off u201d then the sensed dew point temperature of the air t dp sen and the dew point temperature set point for the air within the enclosure t dp set are provided as inputs from block 212 next decision block 214 compares the values of t dp sen and t dp set if t dp sen is greater than t.