Split Type Aircon: Which is best?

[Dr.Kamiya]

in my opinion,

splits are usually designed, to operate out in the open.
splits make higop ambient air from vents in the housing, pass them thru cooling fins to make them cold, then spew them out to the room.
enclosing them... they just higop the already cold air in the enclosure... the room does not benefit maximally from the cooling, because a significant part of the spewed cold air are only circulated within the enclosure.

but they do result in silent operation, if that is the house owner's objective.

Yup that's why I originally cited a theater/listening room.

There are ways to engineer around the problem like having an exhaust duct at the top of the room that plumbs back into the top of the area housing the indoor split; or simply having a taller enclosure with separate intake duct at the top to better utilize natural convection in the room.

Also another negative ng covered setup na yan.
Hindi ba magkaka moist yung grill due to cool air coming from AC vents?
OK lang sana if plastic yung cover grill but if painted wood, it will deteriorate in time if laging nagkakamoist.

On a well-running A/C this shouldn't be a big problem. A/Cs remove the humidity from the air and it falls down the drain pipe.