The climates of the world are getting crazier every day. The summers are hotter while the winters are cooler. Moreover, their schedules have moved.
In tropical countries where energy costs can get expensive, it would be cost-efficient to have air conditioning the whole day and the whole night. Instead, it would be good to have both a ceiling fan and an air conditioner both in the same room.
While this may seem like a lot in terms of electrical appliances, these can actually save you much in terms of energy for the long-term. In addition, it helps the environment.
On really hot days and maybe you want to take a nap during the day, you can turn on the air conditioning. However, if you are just doing your chores, you can just turn on the fan. It can provide a cool breeze inside the room but it does not eat up a lot of electricity.