So learned a valuable lesson this week:

When going thru carwash with AC on, set your heater to recirculate. I ended up with an interior wash after the AC started snowing suds throughout my cabin.

It won't happen every time, but like everything else, this is possible and considered 'normal operation'. By setting to recirculate you block the path of air thru the plenum and "block" the suds from entering the cabin. Wait 5 min after the wash, and business as usual per AC and you'll be fine.

 

Thanks for posting that tidy bit of info!

 

Hmm never had this happen before but I don't usually use car washes because they create swirls.

 

I have started leaving mine on recirculate, all the time. It helps to keep the dust out" since no cabin filter' and cools better when it is really hot and humid.

 

Interesting. I use a touch free car wash on occasion, and I usually turn the vehicle off to prevent unnecessary idleing.

 

Thank you for the tip!