The temperature you set on your aircon might not be the actual room temperature, depending on the age, brand, efficiency of the aircon. Plus most sources I've seen says the ideal temperature is 20-22 degrees. Just go with whatever you feel baby would be comfortable in. Our own rule of thumb is if we feel slightly cold, baby would be happy. If we feel just right then baby would feel hot 😅. You can a bowl of water in the aircon room to prevent drying.
My baby sleeps best with the fan too. And her room temperature with the fan on is about 27-28 degrees. If your baby likes the ceiling fan much more, would you consider putting a fan in her room instead? Much better for her skin and nose too.
first few weeks I don't let my baby sleeps under aircon, as she wasn't sweating at that time, mostly I turn on the aircon at the living room then open my room (not recommended for 5room unit), or else use fan but not pointed to the baby
25 degrees is fine as your baby can not regulate her temperature as yet. Dress her comfortably and not too warm also. I realised cool breeze like a fan blowing usually calms and soothes them.
27 is too way warm for baby i think. I usually set the temperature at 25 degree
I think 1st week 27 is ok, but following days it might be too warm.
@vannyaudrey