LEAFA is the solution:
LEAFA system doesn’t use the room air as return air. Instead, the room air is exhausted to outdoor atmosphere. And 100% fresh air is supplied to the building rooms.
LEAFA utilize the waste energy (which is in the form of condensate water) in its devices for filtering and pre-cool the fresh air supplied to the A/C unit.
By implementing LEAFA, the problem of low efficiency A/C is recovered by lowering the air temperature before it is fed to the cooling coil.