Dear Friends,

As you know most evaporator and condenser fans are sucking type fan instead blowing type fan.
I now these rules :
1 In some cases Fan of condensers sucks air and throws it on semi-hermetic compressor and maybe help to cool these compressors better (Most of compressors such as hermetic and scroll types are suction cool and they be cool just by suction return and no need to cool by condenser fan)

2 Fan and evaporator coil should have counter-current flow to reach to maximum heat transfer (We can change structure of coil, Put suction collector near to inlet air of blowing fan then twice this type of evaporator would be counter-current)

If we put these two above topics away, Why most (or always) fan of condensers/evaporators are sucking type instead blowing type ?

Sincerely yours.