First, the condenser is in the front of the car, giving off hot air not cool air. Second, the 'Temp' control regulates the system trying to maintain the evaporator (the part inside the car) at a constant temperature, so when you blow air through it, you'll get a regulated temperature in the car. When the fan speed is increased, blowing more warm air through the evaporator, that warms up the evaporator causing the the compressor to work harder to bring the evaporator back down to the temperature it's set for
Because any 'Temp' you select on the dial is colder than the air within the car, it doesn't seem to matter much where that dial is set, at least not initially - I *think* once you have the car cooled off if you were to turn that Temp dial down to a warmer position without altering the fan speed, the RR would probably show you a savings for doing so . . . . but I haven't personally verified that
You can easily see the effect of the fan speed setting by turning on your A/C on and watching the RR numbers as you turn the fan speed up and down - The RR gauge is a computed estimate based on the energy per mile being used (or in this case, the extra energy it anticipates the A/C system will draw) so that's an indication the computer knows the A/C will be using more amps because of the higher fan speed setting so it responds with a lower RR number
Don
Because any 'Temp' you select on the dial is colder than the air within the car, it doesn't seem to matter much where that dial is set, at least not initially - I *think* once you have the car cooled off if you were to turn that Temp dial down to a warmer position without altering the fan speed, the RR would probably show you a savings for doing so . . . . but I haven't personally verified that
You can easily see the effect of the fan speed setting by turning on your A/C on and watching the RR numbers as you turn the fan speed up and down - The RR gauge is a computed estimate based on the energy per mile being used (or in this case, the extra energy it anticipates the A/C system will draw) so that's an indication the computer knows the A/C will be using more amps because of the higher fan speed setting so it responds with a lower RR number
Don