I am curious whether Aircon takes more current when you set the temperature low vs increase fan speed.

Is there a big difference in energy consumption when you set the temperature to 18 compared to 25? I know the biggest consumption is the compressor.

A 18degC setting with low fan speed might feel similiar to 21deC with medium fan speed. Would the consumption be big?

Doesn't the compressor keeps running when the A/C is on, unless you turn on eco mode.

Does the compressor run harder when the temp is set lower?