I have an AC unit in my bedroom + workspace. I use its "auto" fan speed and "energy saver" mode (rather than "cool" or "fan only"). I'm wondering, which strategy is more energy efficient and by roughly how much?
Strategy 1: When the room temperature exceeds 73 F / 22.8 C, turn it on and set it to 70 F / 21.1 C. When the room reaches that temperature, turn the unit off and wait until the temps rise to 73 F again and repeat.
Strategy 2: Same conditions, except keep the unit running as long as I am in the room.
It takes about 20-30 minutes on the average day for temps to rise from 70 F (set) to 73 F (trigger).
Is there a general best practice for this or is it dependent on the unit?