okay, the a/c uses power when its on, therefore wasting gas, right? well does it make a difference if the acis on low or on high? does it waste more gas when the a/c is on high? and also, if the air is on, but not the a/c, does it still take power and waste gas? thanks

 

well, the compressor does the same amount of work on low or high, recirculation or fresh.

Yout temperature slider in your prelude controls the mix door HOt/COld

The expansion valve in your evaporator acts as a thermostat. It monitors the air after the coils....which then is bolwn into your face by the vents.

When you set your fan speed on LOW the expansion valve keeps the compressor enguaged until the air passing through the coils (inside the car) is of optimum temperature. ----then once the temperature is reached, then the valve shuts off the compressor, and the a/c system shuts off, until the air in the cabin, passing through the coils warms up then cycling the system on again.

When you set your fan speed on HIGH, the same thing happens, but the air is traveling faster past the coils causing your a/c system to become less efficient, making the air cool slower, therefore causing the a/c system to run longer, robbing power from your engine....

So Basically, in LOW fan speed, your compressor will run less, in recirculation mode it will run much less because the cabin temp will decrese, keeping the expansion valve"happy" if you will, longer-causing the a/c compressor to kick on less.

Still confused......damn I am terrible at explaining processes........

 

let make this alittle easier to understand. so they both take away the same power and use the same amount of gas (when in high or low) but putting it in high takes longer to get cool and it uses the compressor for longer amounts of time. so using the ac would save gas becuase it uses the compressor for a shorter amount of time? thanks