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Discussion Starter #1
Whenever i'm driving and I need to turn on the heater, I just leave the A/C button on. I've had some people in the car ask me why I have the A/C on. Does it make a difference?

Also, in our cars with the red to blue dial for cold/hot air, I just leave my temp at 68, and if I need warm air, I turn the dial to red and I get the warm air i desired.

Thanks for any answers or suggestions.
 

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Much discussion on this recently - search and you'll find a long thread with many opinions...
 

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I did check the search, and did not find a thread with this subject. Also, that is probably the most annoying response someone can give. If you feel like there's already been a thread and you don't want to be helpful, don't say anything.
 

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Well than be annoyed but obviously you missed it - why are people so tough on message boards?
 

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I did check the search, and did not find a thread with this subject. Also, that is probably the most annoying response someone can give. If you feel like there's already been a thread and you don't want to be helpful, don't say anything.


Hello Bimmer Friends,

I was curious if you leave the air conditioner on always even during winter driving (with the temperature dial on warm setting). If so what is the impact on power? Do you think it is significant? How about gas mileage?

Curious as to what your opinions are

Thanks

Try this - took 5 seconds.
 

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Whenever i'm driving and I need to turn on the heater, I just leave the A/C button on. I've had some people in the car ask me why I have the A/C on. Does it make a difference?

Also, in our cars with the red to blue dial for cold/hot air, I just leave my temp at 68, and if I need warm air, I turn the dial to red and I get the warm air i desired.

Thanks for any answers or suggestions.
Hi Rich, 714 resident here. Yes, leave the AC on all the time. It'll keep the humidity way down and help keep your windows fog-free. It won't affect your heating ability.

As far as your temp setting, this time of year in OC I just keep it at 72 and keep the red/blue dial in the center with the auto intensity set to the 3rd level. The problem I have seen is when it gets really hot and sunny, say high 80's and above, I have to have the temp set at 67 and the auto intensity at the highest or the cabin gets hot. The lack of tinting on the cabin windows in the F30 contributes to this issue. Also, that red blue dial must be at full blue. YMMV.
 

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I leave my A/C on 24/7/365. I keep the temp at 69. If I need warm air and it's not coming out, then I set the temp higher. If I need cold air and it's not coming out I set the temp cooler. Not sure what impact it makes. Not sure I am that concerned about it. A lot of times in the winter (SoCal) I don't need heat or A/C so the impact is minimal. Oh, I see you are in OC too. Actually today I needed to go cooler. It's a bit warmer today than it has been.
 

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If you click the"view original" you go right there - give it a try.
 

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02/2012 X5 35d M57Y CPO 98K miles NOKIAN WR G3 12K miles
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Leave the compressor on to keep the shaft seal wet.
 

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Discussion Starter #11
Thanks guys

Sounds like i'll be leaving the A/C on then. LMK and jinete, good to see other OC peoples here, where did you guys get your cars? Got mine at Irvine BMW. Next time you guys want another bmw and don't have a decent hook up, let me know, I have a friend at Irvine.
 

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In the days before "automatic" systems we didn't run the a/c in the winter. I still don't.

If you run the heat manually set to fresh air, rather than recirculate, running the a/c is not necessary.

If you run the heat with the system on recirculate then you need to run the a/c, otherwise the windows will fog up. On recirculate the a/c is needed to dehumidify the air.
 

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Sounds like i'll be leaving the A/C on then. LMK and jinete, good to see other OC peoples here, where did you guys get your cars? Got mine at Irvine BMW. Next time you guys want another bmw and don't have a decent hook up, let me know, I have a friend at Irvine.
I went to Irvine, Sterling, Crevier... etc, etc. I have a business relationship and know Danny McKenna and he ended up hooking me up at McKenna BMW.
 

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Sounds like i'll be leaving the A/C on then. LMK and jinete, good to see other OC peoples here, where did you guys get your cars? Got mine at Irvine BMW. Next time you guys want another bmw and don't have a decent hook up, let me know, I have a friend at Irvine.
I bought at Crevier after also talking with Shelly, Irvine, and Sterling. I just may take you up on your offer when my lease ends in June 2017.
 

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Namelessman and I have had endless discussions on this topic and I believe we both agree. If you live in dry conditions, there's no point in running both at once unless you're simply lazy or want to empty your gas tank. If you're in humid conditions, or just have a need to dry the air, then doing so makes sense.

Whenever i'm driving and I need to turn on the heater, I just leave the A/C button on. I've had some people in the car ask me why I have the A/C on. Does it make a difference?

Also, in our cars with the red to blue dial for cold/hot air, I just leave my temp at 68, and if I need warm air, I turn the dial to red and I get the warm air i desired.

Thanks for any answers or suggestions.
 

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Whenever i'm driving and I need to turn on the heater, I just leave the A/C button on. I've had some people in the car ask me why I have the A/C on. Does it make a difference?

Also, in our cars with the red to blue dial for cold/hot air, I just leave my temp at 68, and if I need warm air, I turn the dial to red and I get the warm air i desired.

Thanks for any answers or suggestions.
Well, sure it would make a difference. The AC might come on when you didn't want it to. Leave it off until you need AC and save a bit in gas.

I just leave it on auto with AC off and the air handling system does a fine job of heating. Rarely need the cowl vent on anything but cool.
 

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I did check the search, and did not find a thread with this subject. Also, that is probably the most annoying response someone can give. If you feel like there's already been a thread and you don't want to be helpful, don't say anything.
More annoying than this? Otherwise, I may have to up my game.

<a href="http://s1381.photobucket.com/user/bkassing1/media/search1_zps2109aeaf.jpg.html" target="_blank"><img src="http://i1381.photobucket.com/albums/ah232/bkassing1/search1_zps2109aeaf.jpg" border="0" alt=" photo search1_zps2109aeaf.jpg"/></a>
 

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More annoying than this? Otherwise, I may have to up my game.



<a href="http://s1381.photobucket.com/user/bkassing1/media/search1_zps2109aeaf.jpg.html" target="_blank"><img src="http://i1381.photobucket.com/albums/ah232/bkassing1/search1_zps2109aeaf.jpg" border="0" alt=" photo search1_zps2109aeaf.jpg"/></a>

See? I showed amazing restraint - no suggesting he throw his toys back in the crib or anything....
 

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In the days before "automatic" systems we didn't run the a/c in the winter. I still don't.

If you run the heat manually set to fresh air, rather than recirculate, running the a/c is not necessary.

If you run the heat with the system on recirculate then you need to run the a/c, otherwise the windows will fog up. On recirculate the a/c is needed to dehumidify the air.
Thanks for the info. learned something new about the system.
 
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