good idea for me but some Hong Kong people must object to this eg some of my family members
if the hottest months (July & August), only electric fans can solve the heat problem at your home, right?
do you live with some family members who likes to switch on the air-con often? Or you're the head of the family, you can decide when to switch on
I only switched on some hours/day for some days in July & August, my family member scolded me for that...but I really felt electric fans for most of the days were enough for me