Defroster musty smell

[dinosaur1]

05 Highlander
08 Rav4

While running the defroster during the winter or even during summer I get a musty smell that comes out which goes away after some time. I change both of my air filters/cabin filters as needed.

The drain tube isn't plugged.

What is the best way to get rid of this smell?

[TLMitchell]

05 Highlander
08 Rav4

While running the defroster during the winter or even during summer I get a musty smell that comes out which goes away after some time. I change both of my air filters/cabin filters as needed.

The drain tube isn't plugged.

What is the best way to get rid of this smell?

Wurth A/C & Heating System Treatment 16oz.

TL

[Shane731]

I had a funky smell coming through my vents once and I used this:

1Z Einszett Klima-Cleaner Air Conditioner Treatment

Worked like a charm.

[Mike lambert]

Turn on the ac high,take half a can of Lysol and spray on the intake outside the car ,this will kill the bacteria that causes the odor

[dinosaur1]

Turn on the ac high,take half a can of Lysol and spray on the intake outside the car ,this will kill the bacteria that causes the odor

Any can of Lysol?
How often does this have to happen?
Is this the same as white vinegar or hvac cleaners?

[BWG707]

What happens, from what I've been told, is that while using the AC moisture will build up in the air exhaust tubing and vents so before you stop your car you should turn the AC off and let outside air flow thru your vents to dry up the moisture otherwise it will milldew.

[dinosaur1]

What the longest lasting air freshener?

[photoadjuster]

inject steam in the vents for 10 minutes.

[Robert8194]

inject steam in the vents for 10 minutes.

Have you had any problems with the extreme heat? I am concerned about melting the plastic vents. My steamer is putting out 192c. (378 F.) and I wonder if10 minutes at that temp is safe. What steamer are you using?

[mwoolfso]

In addition to the feedback provided by others you probably should check out the car's A/C drain lines and ensure they are not clogged.