How to buy Air conditioner?
Unless your "small" bedroom is at least 111-square meters 1.5 ton is way too large, that would need a wiring upgrade &amp; would suck money right out of your pocket. You'd want something in the .5 ton range (not 1-plus anything).

If you'd like a rechargeable fan for frequent power outages &amp; it's common amongst your selection, then you'll have something to move the air. So, that's a plus but a waste &amp; a potential future problem if you don't see a need.

The store(s) should have a sheet, pamphlet or booklet with the "approximate" size AC unit for a range of room sizes. .5ton or 6000btu should likely work perfectly, but get the store chart, measure your room &amp; go for the next size up or for the maximum suggested for that room size. Going too big does cool, but it doesn't remove the humidity before it shuts off, so you'll always feel clammy.