Why do air conditioners and refrigerators have to keep turning on and off to keep the air within a temperature range, instead of adjusting their output to maintain an exact temperature?
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It operates around a setpoint. It cools a little below the setpoint, then shuts down, then restarts a little above the setpoint. The machine rests a bit in between. A lot of equipment is not meant to operate on a 100% duty cycle, it requires more robust construction, engineering, etc.
I have a window unit in my bedroom. Mine has a low/energy saver setting, works for me.
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