Any ideas what this was ???

[WRS4]

I went away for a week so wasn't really using the car as such only the trip away and today the trip back. On the way down the motorway and thankfully close to home I saw smoke start coming out of the air vents on the dash FFS.

First panic set in and thought I was on fire, then realised I'm in road works on the M1 so couldn't just pull over, then realised I do have a fire extinguisher but yep you guessed it I haven't fitted it yet and its at home in the garage.

Then I started to think about it, I cant smell burning, it wasn't usual smoke more like mist like you see dry ice on F1, then noticed condensation on my vents and when I wiped my finger over it it was pretty cold so a wild guess here is it something to do with my air con / heating unit? if not what should I look for ? if it is then again what is it and what should I look for ?

I turned off the heated / fan and the smoke stopped and I went directly home, once I got home I lifted the bonnet and see no signs of anything that looks wrong

cheers

[WRS4]

just to update, had an appointment to go to and air con and heater all seem to be working ok and no smoke ? WTF

[Lady Penelope]

Hmmm, interesting. I take it you googled? Seen this?

https://products.geappliances.com/appli ... ntId=16744

Maybe related to your week of not using it, the weather conditions and maybe the humidity of exactly where you parked it and when you then fired her up...

P

[ArthurPE]

Very humid air outside
As it passed over the evaporator and cooled it condensed the moisture
It was 'fog'
It's happened to me

https://m.youtube.com/watch?v=NL1GQQI3hcM