The response to this query depends on several factors, including the climate, the size of your AC unit, and your personal comfort preferences. Generally, setting your thermostat to a comfortable temperature while being energy-efficient is recommended. If you are concerned about energy usage, consider using a programmable thermostat to adjust the temperature based on your schedule. It's also a good idea to close curtains or blinds during the hottest parts of the day to reduce the workload on your AC system.