I was curious to see how the temperature of the AC condenser changes when transitioning from having the air conditioning off to on.
To gauge the temperature change I installed a small RTD sensor between the fins of the AC condenser, close to the center of the AC condenser and slightly above the top edge of the bumper cover.
The probe extends slightly past the fins both on the front and back of the condenser since the probe tip is 1″ long which is a little greater than the depth of the AC condenser.
AC Condenser Temperature Results:
I made a short drive through my neighborhood at very low speeds beginning with the air conditioner off. A brief stop was made for approximately 2 minutes during which the engine was shut off. After the pause, the drive was resumed.
After the stop, once the car was moving again the air conditioning was turned on and remained operating for the remainder of the drive.
The temperature is shown in the chart below.
Once the air conditioning is active, indicated by the AC Fan (%) increasing from zero quickly, a corresponding increase in the temperature at the probe location is observed.