Yes, air conditioners generally use less electricity when they are set to a lower temperature or a lower cooling setting. The reason for this is that air conditioners work by removing heat from the air and cooling it down to the desired temperature.
When you set the air conditioner to a lower temperature, it has to work harder to extract more heat from the air and bring it down to the lower temperature. This increased workload typically results in the air conditioner using more electricity.
However, it's important to note that the energy consumption of an air conditioner depends on several factors, including the efficiency of the unit, the size of the space being cooled, the outside temperature, and the desired temperature setting. In some cases, if you set the air conditioner too low, it may result in excessive energy consumption. It's generally recommended to set the temperature to a comfortable level and avoid extreme temperature differences between the inside and outside of your home or office. This can help optimize energy usage while still providing a comfortable environment.