I'm from the US but I'm currently living in the Middle East. It's hot pretty much year-round here.
I'm shopping around for a ductless mini-split AC. The minimum the people here seem to use is 18,000 BTU.
I have a bedroom that's a bit less than 200 square feet. According to online charts, 12,000 BTU would be more than enough even after accounting for any possible extra factors. Why am I being recommended 18,000 BTU then?
Are they just trying to sell a more expensive unit? Or does the guy genuinely not know? I've asked regular people for their experiences and some have mentioned bad experience with weaker units not cooling enough. Probably because the AC is on for like 8+ hours a day on a daily basis?