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You’ve got a floor standing monoblock unit, we borrowed one from the engineer when the split unit in the study broke down for a couple of days. It worked fine in our domestic setting. Other monoblock units which are still common outside the EU are the good old window rattlers which are marginally better as the noisy bit is outside but can rattle the windows if badly installed, when our lounge split was repaired the guy redid the window bracket for the window unit in the laundry room so that’s quiet again now. Monoblocks are real air conditioning units in that they cool the air just not as efficient as a split and won’t go down as cold as a split and often will only cool where a split will also heat. But in a domestic setting In cold countries you probably have radiators for the heat so only want cold from your air on anyway. We have our split units set at 28 in the lounge, 26 in the study and 25 in the bedroom so something that’ll chill to 20 in an empty room is plenty cold enough for a normal home. Unless you live on a server farm. Also, while splits will heat, it’s hot air heating so shit for the two weeks of the year it’s needed in HK compared to a couple of cheap oil rads on wheels.
@Howard if you are cooped up inside, consider a dehumidifier as well, dry hot air is more bearable than humid mild air.
In the interests of science, I've just fired up the makes-room-cold-box for half an hour. The temperature in the room went from 25.5degC to 20.3degC.
Might not be air-con, but it's good enough for me.