WTF does Max A/C do?
I've heard people say that the only thing Max A/C does is simply operate the flap which shuts off outside air, so that air inside the car gets cold faster. But if that's all it does, then why does the fan speed increase as well?
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Might be an aux fan that guides the recirc air to the inlet
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I always thought it was because of different pressure in the car once the air is being recirculated making the fan blades go faster.
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:idk: None of my cars have that. Auto climate control FTW.
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it turns the recirc on.
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So then if all Max does is make the air recirc, then why do so many cars have both a Max button AND a recirc button? Do they think people are too stupid to understand what recirc will accomplish? |
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Rider, yours does too. It's the re-circ buton.
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Homeslice, yes, people are too stupid to understand what recirc will accomplish. The "too stupid" factor dictates far too much of car design today. |
What? People don't understand if you recirc cold air thru the a/c process again it gets colder?
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It does more than recirculate the air (most systems have a separate control for that). Max A/C also runs the compressor and auxiliary engine cooling fan at a 100% duty cycle. Normal A/C runs both intermittently, you can probably hear/feel it when the A/C compressor clutch cycles, particularly if you're sitting idle.
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:lol:
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Why wouldnt you want it to blow harder? When I say harder I really mean BJ.
I always turn on the re-circ button. Why cool hot ass air from the outside. Bitches, get your own damn a/c. |
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Run it on normal while the windows are cracked, and then switch to Max when you close the windows. |
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Dude......My point was, on a hot day the air inside is going to be hotter than the air outside. So why not force as much of it out as possible, before activating recirc?
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Or take the bike. |
I lqeave my windows cracked open during the day.
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You guys will debate anything won't u.
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:lol: |
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I don't have A/C. I use natures a/c thats usually not that cold during this time and can be filled with dirt. Mmmmm.......breath in that fresh nature a/c boys.
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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. Quote:
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I thought he was saying he farts a lot :scratch:
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I don't know if it's right or not (and I honestly don't care :lol:) |
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I've service/repaired a lot of AC systems and I've never seen one like this. Running the compressor 100% will just flood/freeze up the Evaporator. |
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Max A/C is for cabin air recirculation only. Notice when you have a Recirc button, you don't have a Max A/C setting. When you have a Max A/C setting, you don't have a recirc button. Most compressors nowadays don't cycle anyway. They are either ON or OFF. The pressure control is done with valving in the compressor itself. This is not to say that the engine controller cannot turn OFF the compressore if the high side pressure becomes too high or too low or if you in a W.O.T. scenario. |
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The Subaru only has the recirc button and no "Max" setting. |
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You are wasting energy trying to convince me of something when no such action is needed. Your energy is better spend making fun of people who call the fire department when they lock themselves out of their houses or people who drive sports cars with automatic transmissions. Kthxbye |
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Those that have Max AC and a Recirc button is simply for air venting direction (Max AC) and then % outside air using the Recirc button. |
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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. |
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And it probably is initially...but put in on Recirc. and 10 seconds later the temp will be less then the outside air temp. |
10 seconds? Doubt it. I don't drive big old American cars with awesome AC, so it takes awhile for my AC to get cold. I would rather use the Normal setting for the first 30-60 seconds so it can force hot air out, before swtiching to Max.
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I thought Max engaged the secret R12 subsystem for that extra bit of cooling that R134a alone just can't give.
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All cars I've driven have both. All cars I own kick on the auxiliary cooling fan as soon as Max AC is selected. Observation skills bordering on retarded should still allow you to at least gather that if cars have been your life for 22 years. If I was wrong about the compressor, so be it, I'm not opposed to learning from someone here. Provided they at least come across as knowledgeable, beyond just claiming to be while regularly showing otherwise. redflip |
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So now the question remains....do you have BOTH a recirc. button AND a MAX A/C button? Or do you have a Recirc button and lettering that says Max A/C because then Max AC doesn't do anything. I should have said that Max AC acts as a recirc function if you don't have a button. If they put both there, the MAX AC is only to make sure you put it to full cold. |
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:eek: |
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(just selected "MAX A/C" and turned the Temp into the red zone and, woe and behold, hot air came out) Not trying to bust your balls (okay, maybe a LITTLE) but not all cars function the same way. ;) |
Wow, you guys put a lot of thought into this whole windows-up windows-down thing. :lol:
I wondered the same thing about Max A/C when I was a kid. Our AMC Hornet (yeah, baby) had a label on the knob that said "Max A/C - Desert Only" or somesuch. I spent many a family vacation (of the non-desert variety) wondering from the back seat what would happen if we turned it on. I was pretty disappointed when I got older and realized it was just a recirc control. :lol: |
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Of course this is AMC we're talking about. A company that comes up with crap like the Pacer and the Gremlin can't be very smart. |
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Would you like a Max Hot label too?:idk: |
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This Mazda was 999 down and 199 a month. So...I sold the Golf, put the 995 down, kept the same payment and bought 3 sets of race tires with the 900. redflip I sell cars when it's profitable. :idk: You just have to know when to sell and be forceful at what cost the cost vehicle needs to be. |
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Seems like you could have bought a 2 year old used Golf, which would have only depreciated 1-2K over that same amount of time, if you negotiated right. Cuz I like telling people what to do redflip Shoulda kept the Golf anyway.....Mazda 3 seats have no lumbar support last I remember redflip |
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And the Nissan will modulate the auxiliary cooling fan when normal AC is on, whether or not recirculate is active. It runs 100% of the time MAX AC is selected. Whether it's the same on the others, I don't know, my wife drives them more than me. So, clearly not all AC systems are created equal. The only thing more clear is this subject has run its course several times over. Should you feel the need to "debate" this further, please PM ParticleMan. :) |
But if the A/C is set at MAX on a treadmill, will it take off?
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Appropriately, my dad gave that car away to our garbage man. |
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Almost an additional 40 posts since I revived this...Nice.
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Even going from center vents to max, the sound changes and the air comes out faster
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Two hundred bucks a month for a car you have to do nothing to until you get rid of it is pretty cheap. You do this over 5 years and you're paying 12k, but getting a new car every 1.5 years. You actually make out better unless you keep the vehicle for at least a few years after it's paid off, but who wants a car for 7 years. Since these hold there value well, how much do you think I could have bought a 1-2 year old used one for? Then sold it for after 1.5 years? More than 2k? |
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You either recirculate the air OR you recirculate the air and force the air all through the center vents. Do you think this noise is coming from somewhere else? Like ur ass maybe?redflip |
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A quick walk down to any car in my garage would disprove every post you, a self-proclaimed expert, have made in this thread. That's all the backing I need. |
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What car is this? I'll test it. |
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:lol
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You're saying there is no difference. I beg you, please do not try to explain anything further. |
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OK...so he notices the air is directed differently changing the sound. BFD. Still doesn't change the fact that Max AC doesn't do anything in regards to the AC system running under the hood. |
Coming up on 100 posts :rockwoot:
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I dub this the last word. :lol |
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Hans, do you know what Max AC does now?:lol |
Damn West coasters and their late night final words!
I know what it does in my truck. Have you figured out what it does in a GM yet? :lol: |
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