Air is better than water
Technically, no, air is a much worse thermal conductor, and most liquids are significantly better. It's a pretty efficient thermal INSULATOR, however.
The practical applications, however, make the movement of air OUT of your system an efficient cooling method.
Usually copper heatpipes that are found in most air coolers have a drop of liquid in them to boost perfomance.
Which are already build-in and don't require you to fill them with possible leaks.
Technically, no, air is a much worse thermal conductor, and most liquids are significantly better. It's a pretty efficient thermal INSULATOR, however.
The practical applications, however, make the movement of air OUT of your system an efficient cooling method.
Usually copper heatpipes that are found in most air coolers have a drop of liquid in them to boost perfomance.
Which are already build-in and don't require you to fill them with possible leaks.