No, setting an air conditioner's temperature at 30°C (86°F) does not make it consume less power than setting it at the ideal temperature of 25°C (77°F). In fact, the air conditioner will typically consume more power at the higher temperature setting.
Air conditioners work by removing heat from the indoor environment and transferring it outside, thereby cooling the indoor space. The amount of power consumed by an air conditioner depends on the temperature difference between the indoor and outdoor environments and the cooling load.
When you set the temperature at 30°C, the air conditioner has to work harder to cool the indoor space to the higher set temperature. It needs to remove more heat from the room, resulting in a larger temperature difference between the indoor and outdoor environments. This increased temperature difference requires the air conditioner to work for a longer duration and consume more energy.
In contrast, setting the temperature at the ideal level of 25°C requires the air conditioner to maintain a smaller temperature difference between the indoor and outdoor environments. The cooling load is reduced, allowing the air conditioner to work more efficiently and consume less power.
Therefore, setting the air conditioner at the ideal temperature of 25°C is generally more energy-efficient and consumes less power compared to setting it at a higher temperature like 30°C.