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White Smoke out AC Vent

Discussion in '2.5 Gen Tundras (2014-2021)' started by Alex M, Aug 26, 2025 at 8:43 AM.

  1. Aug 26, 2025 at 8:43 AM
    #1
    Alex M

    Alex M [OP] New Member

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    I’ve been having this problem with my 14’ Tundra SR recently of white smoke coming out the AC Vents. No idea why and it’s starting to bug me, I recently put on a whole new AC system so everything is new. However I’ve noticed my heater doesn’t work, doesn’t throw any hot air and I don’t know if that has anything to do with it. Anyone know why it throws white smoke?
     
  2. Aug 26, 2025 at 9:12 AM
    #2
    Totmacher

    Totmacher New Member

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    Is it really smoke (something burning)?

    Could it be simple fog due to humidity/weather?

    Could it be a refrigerant gas/oil leak in AC system misting out? Any oily residue in vents versus simple condensation?
     
    Corndog123 likes this.
  3. Aug 26, 2025 at 9:44 AM
    #3
    2mchfun

    2mchfun Cool story, but did your new TTV6 tow a shuttle?

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    Mouse farts? JK, but check your cabin filter, access through glove compartment. Then, check your coolant level. How old is the thermostat for engine coolant? Might be stuck open causing lack of heat, but should still have some unless coolant is low.
     
    Corndog123 likes this.
  4. Aug 26, 2025 at 10:50 AM
    #4
    _none_

    _none_ Poser

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    Check your ac drain. The box will fill with condensate water, you’ll get condensation (white smoke) out of your vents.
     
    woods, Corndog123 and 2mchfun like this.
  5. Aug 27, 2025 at 3:44 AM
    #5
    Corndog123

    Corndog123 New Member

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    Probably condensation. I doubt it's smoke unless of course you smell something burning.
     
    2mchfun likes this.
  6. Aug 27, 2025 at 6:52 AM
    #6
    TFT

    TFT New Member

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    Or a leaking heater core? Don't know if it is designed the same as an old Volvo I used to drive. It got a hole in the heater core, and leaked coolant inside the cab, and was dripping hot coolant in the car. Other symptoms I saw..
    -sweet smelling odor in car
    -wet floor under passenger feet
    -low coolant
    -broken heater
    -white smoke in can when car hit and heater on.

    I justed bypassed the in and out hose of the core and had no heater. Don't know your options.
     
  7. Aug 27, 2025 at 7:38 AM
    #7
    Tunrod

    Tunrod New Member

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