All the AC units are equipped with either reciprocating/rotary/scroll compressors with a thermostat and another button that said, “Off/Fan/Low cool/medium cool/high cool” or similar.
The common misconception amongst many people was that you set the temperature to say, 18˚ C or so, you get good cooling!
It is not so. The rate at which cooling produced has got no relation to the set point temperature of the thermostat.
Unfortunately your AC does not know what you are thinking! The thermostat does its job perfectly and the compressor does its job even more perfectly. How?
Thermostat will keep sensing only the room temperature. If the room temperature is higher than the temperature that you have set, it will simply tell the compressor to keep running. As soon as the set temperature is sensed, with a little bit of safety margin, it will ask the compressor to shut off.
As far as the compressor is concerned, it does not understand the concept of temperature or set point. As long as it gets instruction from the thermostat, ordering it to run, it will keep running. Even if the occupant is freezing to death! That is why many times you would have been compelled to get up and shut off or adjust the unit in the middle of the night. Or if you had a remote, you would have only saved yourself the trouble of getting up. Nothing more than that!
Is there not a better way address the problem? There is. We will see it part 3.
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