Dear ‘one of the chevra’- i think you misunderstand how airconditioners wrok. They all work on thermostats and once the temperature feels that the temperature falls below a certain limit (or above), it kicks the motor in, REGARDLESS of opening doors or windows. In other words, just by breathing and living and being in the house (room), you will ultimately affect the thermostat. As a matter of fact, having a large number of people in a room probably affects the airconditioning way more than opening the door for a fleeting moment.
So- how de live with heating, airconditioning, refrigerators, ovens?clearly , it is because it is ‘dovor she-eino miskaven’ and, because it does not have a DIRECT effect (even when you open a refrigerator door, the motor does not kick in right away)it becomes a grama and muttor. As far as “psik reisha” goes, you may want the effect of the compressor but not RIGHT AWAY. in other words, you don’t wan’t the door pening to act as the reason for the compressor working.