i had an old kelvinator 0.75 hp. window-type, installed brand new, some years back.
for some reason, it also just could not cool my 10 sqm room enough.
fortunately, my office had an ancient 2 hp carrier, that they were condemning because the new units had arrived.
"lagay nyo sa'king room!"
"now, if i were not careful in making adjustments, i'd need a sweater..."