WTF does Max A/C do?

[Particle Man]

Originally Posted by fasternyou929

I hate to do it to you in a non-fashion related thread, but I think 'slice has the right idea here.

You actually make your A/C less efficient by using recirculate with the windows down because air is being drawn out of the cabin; the same air your A/C is trying to draw in. You'll get more air flowing through the system with your window down if you let it use the outside air (which, in that scenario, is also cooler to begin with).

Try driving with a window open and hit the recirculate button on your A/C. At the same fan speed, there will be considerably less air coming out of the vents than you have in non-recirculate mode.

I must've read this 10x and I still can't figure out what you're trying to say.

Tell that to the dudes writing the instruction manuals then.

[fasternyou929]

Originally Posted by Particle Man

Tell that to the dudes writing the instruction manuals then.

If I ever see a manual written that way, I will. You actually made me crack open the owners manual for my truck, but all it says is to use recirculate for quick cooling or in dusty/high exhaust fume areas. It makes no mention of using recirculate with the windows down.

[Particle Man]

Originally Posted by fasternyou929

If I ever see a manual written that way, I will. You actually made me crack open the owners manual for my truck, but all it says is to use recirculate for quick cooling or in dusty/high exhaust fume areas. It makes no mention of using recirculate with the windows down.

The manuals for my Grand Prix, Achieva, Explorer, and Mountaineer (not sure about the Kia or the Subaru I'll have to check) all said crack the window slightly for the first few minutes of operation to allow the MAX A/C to push the hot air out and then close the windows to allow the system to dehumidify the air and recirculate. It doesn't say "windows down" (nor did I say that).

I don't know if it's right or not (and I honestly don't care )

[Homeslice]

Originally Posted by Particle Man

The manuals for my Grand Prix, Achieva, Explorer, and Mountaineer (not sure about the Kia or the Subaru I'll have to check) all said crack the window slightly for the first few minutes of operation to allow the MAX A/C to push the hot air out and then close the windows to allow the system to dehumidify the air and recirculate. It doesn't say "windows down" (nor did I say that).

I don't know if it's right or not (and I honestly don't care )

If your objective is to "push" hot air out the window, you'd be better served by using the Normal setting, since it pressurizes the cabin because it's drawing in outside air. On the Max setting your cabin air isn't pressurized, therefore you're not pushing as much air out the window as you could with Normal.

[101lifts2]

Originally Posted by Homeslice

If your objective is to "push" hot air out the window, you'd be better served by using the Normal setting, since it pressurizes the cabin because it's drawing in outside air. On the Max setting your cabin air isn't pressurized, therefore you're not pushing as much air out the window as you could with Normal.

The inside cabin is in no way "air tight" in any vehicle and you are always drawing in at least 10% outside air on the recirc button.

If you want to cool the cabin quickest and it's hot outside, you use the recirc function. This will make the differential temperature across the evaporator the lowest.

[Homeslice]

Originally Posted by 101lifts2

If you want to cool the cabin quickest and it's hot outside, you use the recirc function. This will make the differential temperature across the evaporator the lowest.

Again, what if the interior temp is hotter than the outside temp?

[101lifts2]

Originally Posted by Homeslice

Again, what if the interior temp is hotter than the outside temp?

And it probably is initially...but put in on Recirc. and 10 seconds later the temp will be less then the outside air temp.