Turning on an air conditioner and then immediately shutting it off generally doesn't have significant consequences on the air conditioner itself. Modern air conditioners are designed to handle frequent on/off cycles without suffering any damage. They have built-in protections to handle such scenarios.
However, there are a few things to consider:
Compressor wear: The compressor is the heart of an air conditioner and is responsible for cooling the air. Frequent on/off cycling can lead to some additional wear on the compressor over time. However, this wear is generally minimal, and modern compressors are designed to handle frequent starts and stops.
Energy efficiency: Air conditioners use more energy during startup compared to continuous operation. Frequent cycling on and off can slightly reduce the overall energy efficiency of the unit. If you find yourself constantly turning the AC on and off, it might be more efficient to set it at a temperature that maintains a comfortable environment without the need for frequent adjustments.
Humidity control: Air conditioners not only cool the air but also help dehumidify it. When you turn off the AC too quickly, it might not have enough time to remove sufficient humidity from the air, leaving the indoor environment feeling a bit clammy.
Wear on the power switch: Frequent use of the power switch can lead to wear and tear on the switch itself, especially if it's a mechanical switch.
While turning an air conditioner on and off occasionally won't cause any major issues, it's generally more efficient and better for the overall performance of the unit to let it run for longer periods when needed. If you're concerned about energy usage or temperature control, consider using a programmable thermostat or a smart thermostat to manage the AC's operation more effectively. These devices can maintain a stable temperature and reduce unnecessary on/off cycling, leading to better energy efficiency and increased comfort.