[TonyB58]

Has anyone experienced a mildew/moldy smell from their AC? Mine occurs whenever I start up the car after not driving it for 2+ hours. The smell is present for the first 8 seconds and then disappears. Another way to trigger the smell is by having only the fans blowing. I've tried doing the kool-It Evaporator cleaner 3 times, sprayed the air inducts with disinfectant countless times, changed the cabin air filter with carbon ones 2 times, stopped using recirculating air, and used those meguiars odor eliminator and the smell keeps coming back. I live in South Florida and I get that the humidity may be the cause of my concern, but I've own 2 Japanese cars and none of them had this issue.

[TinCanSailor]

We have dealt with this on occasion with our cars. We use this product in our house to help with pet odor and after cooking with garlic, onions and such. My mother in law had a sewer backup happen at her house, We cleaned up removed the carpet, ventilated and ran this for a few cycles and you would never know it happened. Works like a champ!

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

[ilovebmwx3]

is there any tutorial for F25 AC drain hole location ?

[cbpip]

A/C evaporator issue I would recommend BG FrigiClean to remove excessive odors / cigarette & cigar odor.

Best product to clean evaporator coils IMO. FriClean first followed by FrigiFresh.

Have also sprayed Lysol scented disinfectant ( I used Linen scent) into the fresh air intake to remove stale air smell temporarily.

https://www.bgprod.com/catalog/clima...g-frigi-clean/

And

https://www.bgprod.com/catalog/clima...g-frigi-fresh/

On Amazon
https://www.amazon.com/Frigi-Clean-E...s%2C111&sr=8-1

Also used Nextzett 96110515 Klima-Cleaner Air Conditioner Cleaner - 10 fl oz not as effective as FrigiClean.

https://www.amazon.com/nextzett-9611...s%2C111&sr=8-5