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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > snowflake button?



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      09-30-2012, 05:44 PM   #1
captainslow
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snowflake button?

in my car there is a picture of a little snowflake, when i click it and it lights up the air blows out cold if i have the dial set to a low temp. that seems normal, but what i dont get is if i turn the dial up to say 84 degrees fahrenheit the air comes out hottt. so i dont get it does it turn the A/C off but the light stays on or what?
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      09-30-2012, 05:49 PM   #2
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Snowflake = A/C

Snowflake Off = Fan
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      09-30-2012, 05:51 PM   #3
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Quote:
Originally Posted by N55 View Post
Snowflake = A/C
right i got that, but when i have that button on and i turn the temp gauge up it blows out hot air, so the A/C isnt doing anything. so in the winter if i turn the dial up to 84 farenheit and have the snowflake on will it be colder then if i have it set to 84 and have the snowflake off?
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      09-30-2012, 05:55 PM   #4
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Quote:
Originally Posted by captainslow View Post
right i got that, but when i have that button on and i turn the temp gauge up it blows out hot air, so the A/C isnt doing anything. so in the winter if i turn the dial up to 84 farenheit and have the snowflake on will it be colder then if i have it set to 84 and have the snowflake off?
Hi,

When you turn the temp up and have the snowflake button pushed, the A/C is still working but since hot coolant is flowing through the heater core, the net result is hot air.

However, since the A/C is still working, the air is being dehumidified. This is what you would typically do in cold weather to defog the windshield. In may cars, the A/C comes on automatically when you select the defog mode but fortunately on our cars, this isn't the case.

Regards.
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      09-30-2012, 05:55 PM   #5
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Youre turning the temperature up higher and wondering why it is getting hotter?



The snowflake is the A/C compressor and it will still run at higher temps and dry the air, but the temp is what it is. you dont make sense.
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      09-30-2012, 05:57 PM   #6
captainslow
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so do you guys leave the snowflake button lit up in the winter

assuming you live somewhere cold*
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      09-30-2012, 06:02 PM   #7
Healey3000
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Quote:
Originally Posted by captainslow View Post
so do you guys leave the snowflake button lit up in the winter

assuming you live somewhere cold*
No, only if needed, to defog. It robs power from the engine, after all.
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      09-30-2012, 06:03 PM   #8
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but it dries the air which is good
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      09-30-2012, 06:08 PM   #9
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I was under the impression that pressing this button made it snow. I have been sadly misinformed.
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      09-30-2012, 06:16 PM   #10
Healey3000
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Quote:
Originally Posted by captainslow View Post
but it dries the air which is good
Not necessarily. Winter air isn't always in need of drying. In fact, it can often be drier in winter than in summer in many places.

Use it only when needed, and it will be obvious when it is needed by the way your windows start to fog up. Otherwise, you are simply wasting energy and drying out your sinuses.
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      09-30-2012, 06:34 PM   #11
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Quote:
Originally Posted by AndyR83 View Post
I was under the impression that pressing this button made it snow. I have been sadly misinformed.
I have so much snow i need a shovel.
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      09-30-2012, 06:35 PM   #12
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Quote:
Originally Posted by AndyR83 View Post
I was under the impression that pressing this button made it snow. I have been sadly misinformed.
+1 me too
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      09-30-2012, 06:39 PM   #13
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Quote:
Originally Posted by Healey3000 View Post
Not necessarily. Winter air isn't always in need of drying. In fact, it can often be drier in winter than in summer in many places.

Use it only when needed, and it will be obvious when it is needed by the way your windows start to fog up. Otherwise, you are simply wasting energy and drying out your sinuses.
alright thanks
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      09-30-2012, 07:35 PM   #14
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Quote:
Originally Posted by Healey3000 View Post
Not necessarily. Winter air isn't always in need of drying. In fact, it can often be drier in winter than in summer in many places.

Use it only when needed, and it will be obvious when it is needed by the way your windows start to fog up. Otherwise, you are simply wasting energy and drying out your sinuses.
True, if you are only talking about the outside winter air. The environment INSIDE the car is different assuming you and your passengers are alive and breathing.

Ever wonder why your car fogs up when your making out with a smoking hot chick? You exhale a good bit of moisture into the car.
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      09-30-2012, 08:25 PM   #15
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Quote:
Originally Posted by captainslow View Post
right i got that, but when i have that button on and i turn the temp gauge up it blows out hot air, so the A/C isnt doing anything. so in the winter if i turn the dial up to 84 farenheit and have the snowflake on will it be colder then if i have it set to 84 and have the snowflake off?
Did you just ask if 84 is colder than 84?
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      09-30-2012, 08:30 PM   #16
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Quote:
Originally Posted by Rob.K View Post
Did you just ask if 84 is colder than 84?
i was trying to understand if having the air condition on but having the temp turned up all the way was the same as having the temp all the way with the little snowflake button off
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      09-30-2012, 08:36 PM   #17
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lol is this guy serious
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      09-30-2012, 08:42 PM   #18
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i couldnt be more serious
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      09-30-2012, 08:50 PM   #19
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If we stop bashing the OP and actually listen to what he's saying, it actually makes a lot of sense, and poses a great question, albeit on a more scientific level.
I give OP mad props for keeping it cool amongst all the silly commentaries. Bravo sir.
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      09-30-2012, 08:59 PM   #20
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Quote:
Originally Posted by Dark_Knight_335 View Post
If we stop bashing the OP and actually listen to what he's saying, it actually makes a lot of sense, and poses a great question, albeit on a more scientific level.
I give OP mad props for keeping it cool amongst all the silly commentaries. Bravo sir.
+1

You will experience 84 deg different at 20% or 90% humidity! The A/C dries the air up so it "feels" more comfortable!
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      09-30-2012, 09:00 PM   #21
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Quote:
Originally Posted by Dark_Knight_335 View Post
If we stop bashing the OP and actually listen to what he's saying, it actually makes a lot of sense, and poses a great question, albeit on a more scientific level.
I give OP mad props for keeping it cool amongst all the silly commentaries. Bravo sir.

No it makes no sense.
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      09-30-2012, 09:03 PM   #22
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He's just too complex for most of you to understand.
Hey everyone thought Einstein was a complete idiot.
Just saying man.....
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