Selecting the right dryer for your compressor :

The type of dryer you need mainly depends on the targeted dew point If it is very low, then you will likely require a desiccant dryer However, since these are less energy efficient, they are not the best choice for applications with a regular dew point In that case, you probably need a refrigerant dryer
Once you have identified the type of dryer, there are lots of ways you can find energy savings For example, refrigerant dryers are also available with the highly efficient variable speed drive technology, while a desiccant dryer with the option of dew point dependent switching can offer large savings