Sandevino
Senior Member
- Joined
- Apr 18, 2020
- Posts
- 1,150
- Reaction score
- 1,517
- Location
- North Texas
- Ram Year
- 2023
- Engine
- HEMI 5.7 eTorque
Not all the condensation drains though, the evaporator will still be slightly damp. The moisture on the evaporator when the vehicle shuts off can cause the growth and musty smell. This is really only an issue if it’s in recirc for a long time, and it’s very minimal but over time it can cause the growth. The newer systems with humidity sensors will actually automatically open the fresh air intake to help control humidity.
When I have recirculation on in my 2020 2500 I often hear the fresh air door open when driving on the freeway. Around town, it's imperceptible. I say this, as the system does have a humidity sensor and will open the fresh air door when needed.