Tropical Night Operation Strategy — When 25°C+ Disrupts Sleep

Korea Jul-Aug tropical nights = avg 30 days/yr, Seoul nightly min 25°C+

Check: **5 Tropical-night reports**: ① Wake at 5am hot (midnight 25°C → 4am 27°C natural rise). ② Sleep with sleep mode+27°C, wake hot (mode auto-OFF + ambient buildup). ③ Living OFF/bedroom ON = living heat seeps to bedroom. ④ Fan only = insufficient at 24°C ambient. ⑤ Elderly = unaware of AC controls.

What to do: **5 strategies**: ① **30 min before sleep, 22°C high fan** to pre-cool bed/mattress, then 26°C at sleep (cold bed lingers). ② **Timer** = run midnight-4am, OFF 4-6am (body temp drops naturally). ③ **Living + bedroom both on** (1 run, 1 fan) = airflow. ④ **AC + fan combo** = 1°C cooler feel for 5% more power. ⑤ **Window blackout shades** (aluminum, 30% heat block) = next day relief. **Elderly**: photo + big font card (14pt+) showing AC + fan operation.