(Advertising options)
Results 1 to 8 of 8
  1. #1
    Playtennis's Avatar
    Playtennis is offline Ignition On
    Overall activity: 0%
    Achievements:
    Veteran5000 Experience Points
    Join Date
    Oct 2005
    Posts
    45
    Points
    5,385
    Level
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Question Aircon blowing Hot & Cold...

    Hi Bros,

    My E46's aircon blows cold air from the passenger vent and hot air from the footwell vent...at the same time. I have read the manual but it does not mention anything about blowing hot AND cold air together..

    Any bros experience this before? I might have missed out on some adjustments...here and there.

    Cheers!
    Jenn

  2. #2
    cgoh's Avatar
    cgoh is offline Cruising Along...
    Overall activity: 1.0%
    Achievements:
    Recommendation Second ClassVeteran5000 Experience Points
    Join Date
    Oct 2006
    Location
    Siglap
    Posts
    577
    Points
    9,643
    Level
    1
    Thanks
    5
    Thanked 1 Time in 1 Post

    Re: Aircon blowing Hot & Cold...

    I have experienced the same thing. Don't worry . This is normal. I also just found out a few weeks ago. It only happens on cold days. According to other treads under the interior section on the same topic, it seems to be a "feature" of the E46. It keeps your feet warm when the car temp is close to the outside temp. Most bros advice to decrease the car temp to below 22C. For me I just turn off the aircon blower to my leg.
    08 E64. Sports Package, DTC, Logic 7, EZ-Stab, CF Roundels, White LED ambient lights, Alu paddles, M6 Wing Mirrors, White LED License Plate Lights, K&N Drop-in Filter, R2D Air Scoop, KW Street Comfort Coilover, BMS Power Box v1.2, Alpina bumper lip & boot spoiler, Blackened front & side grilles, Stoptech BBK, SmartTOP v2.02, SuperSprint Quad Exhaust, H&R Anti-roll Bars, 20" Breyton GTS Race (Gunmetal) ... Really done modding, please don't poison!

  3. #3
    Radon39's Avatar
    Radon39 is offline Naturally Aspirated
    Overall activity: 0%
    Achievements:
    Veteran10000 Experience Points
    Join Date
    Jul 2003
    Location
    36degE, 24degN
    Posts
    882
    Points
    12,546
    Level
    1
    Thanks
    3
    Thanked 28 Times in 27 Posts

    Re: Aircon blowing Hot & Cold...

    it basically turns up the heater....dunno how true...but shortens life of compresor...mine is perpetually at 20degc
    Cheers,


  4. #4
    Playtennis's Avatar
    Playtennis is offline Ignition On
    Overall activity: 0%
    Achievements:
    Veteran5000 Experience Points
    Join Date
    Oct 2005
    Posts
    45
    Points
    5,385
    Level
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Aircon blowing Hot & Cold...

    Thanks! It's good to hear that this is normal.

    We don't get much cold days throughout the year except for the last few days...it' been rainning cat & dogs....

    Cheers!
    Jenn

  5. #5
    TobyNik's Avatar
    TobyNik is offline Juiced Up!
    Overall activity: 0%
    Achievements:
    Veteran10000 Experience Points
    Join Date
    Jun 2004
    Posts
    1,529
    Points
    16,240
    Level
    1
    Thanks
    18
    Thanked 11 Times in 9 Posts

    Re: Aircon blowing Hot & Cold...

    Once your A/C is set to above 21.5 Deg Cel, the heater will turn on.......Normal.

    If you want just cold air perpetually, just set the Temp at 21 and below. Simple as that.....

    Cheers!

  6. #6
    piggyboyz's Avatar
    piggyboyz is offline BMW.SG Admin
    Overall activity: 1.0%
    Achievements:
    Veteran10000 Experience Points
    Join Date
    Jul 2003
    Posts
    1,500
    Points
    16,015
    Level
    1
    Thanks
    0
    Thanked 2 Times in 2 Posts

    Re: Aircon blowing Hot & Cold...

    Quote Originally Posted by Playtennis View Post
    Hi Bros,

    My E46's aircon blows cold air from the passenger vent and hot air from the footwell vent...at the same time. I have read the manual but it does not mention anything about blowing hot AND cold air together..

    Any bros experience this before? I might have missed out on some adjustments...here and there.

    Cheers!
    Jenn

    It may also be a sign that the aircon has got not enough gas. Usually, the driver side is warmer than the passenger side. u may need top up, or in the worst case, a leak in the system. This is of course like the rest say, if u r on 22 or lower

    Hope this helps,

    Cheers

  7. #7
    kleong007's Avatar
    kleong007 is offline Ignition On
    Overall activity: 0%
    Achievements:
    Veteran5000 Experience Points
    Join Date
    Nov 2006
    Location
    Holland Rd
    Posts
    49
    Points
    5,900
    Level
    1
    Thanks
    1
    Thanked 0 Times in 0 Posts

    Re: Aircon blowing Hot & Cold...

    On my previous E46, I once had hot air driver side and cold air passenger side or vice versa. Turned out to be the thermostat malfunctioning ...

  8. #8
    bmw3er's Avatar
    bmw3er is offline Rolling Start...
    Overall activity: 0%
    Achievements:
    Veteran5000 Experience Points
    Join Date
    Dec 2006
    Posts
    181
    Points
    5,053
    Level
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Aircon blowing Hot & Cold...

    Hey, my E90 behaves like this as well! Yeah, especially on cold rainy days.

    Quote Originally Posted by Playtennis View Post
    Hi Bros,

    My E46's aircon blows cold air from the passenger vent and hot air from the footwell vent...at the same time. I have read the manual but it does not mention anything about blowing hot AND cold air together..

    Any bros experience this before? I might have missed out on some adjustments...here and there.

    Cheers!
    Jenn

Similar Threads

  1. Air Con problem: not cold !
    By liverp00l in forum BMW 3 Series Classics (E30/E36/E46)
    Replies: 22
    Last Post: 07-01-2012, 04:31 PM
  2. Do you turn off your aircon before starting engine?
    By megaclaw in forum CLOSED HELP!What's happening to my BMW!?!?
    Replies: 25
    Last Post: 12-11-2009, 11:46 PM
  3. Funny noise from aircon of E46 318 N42
    By drift838 in forum BMW 3 Series Classics (E30/E36/E46)
    Replies: 7
    Last Post: 20-02-2007, 08:38 PM
  4. Aircon Compressor: what is its lifetime?
    By liverp00l in forum BMW 3 Series Classics (E30/E36/E46)
    Replies: 4
    Last Post: 04-03-2006, 05:46 PM
  5. Hot air when Bottom aircon is running at low fan speed
    By megaclaw in forum CLOSED HELP!What's happening to my BMW!?!?
    Replies: 6
    Last Post: 24-12-2005, 01:44 PM

Members who have read this thread: 1

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •