I've noticed a slight moisture smell to my HVAC for a while now, I thought at first it was just when it's humid but I'm smelling it all the time now, looking at the Lubegard option and it seems like the best. Fills the Evaporator core box with foam, and then that foam turns into liquid and drains. Anyone have a good experience with this, or should I look at something else?
Evaporator Core Cleaning
- Thread starter Ang
- Start date
GON
$150 Site Donor 2025
Here is a video of a technician doing the exact service you are inquiring about. I watched this video over the weekend and found it time well spent.
While i have a Honda, Not a Subaru, It seems subarus cleaning kit is about the same price as Lubegard but with the Refresher, if i can find one without insane shipping i suppose i could use the Subaru one. my only concern with the refresher is adding a scent to the car. i like that my cars don't smell dirty, and don't smell like an air freshener, i don't want to get in the car and smell a cleaner or air freshener. Also a little concerned about if the foam ends up being to much for this specific vehicle and gets into other areas, but i guess i don't have a choice, i need to clean it.
GON
$150 Site Donor 2025
I used to do these services when I worked in a dealership. Never had a bad experience as a result except with my personal vehicle 
. You foam it up through the evaporator drain tube and let it turn to a liquid and drain back out.
My issue was that I guess the foam reacted with my HVAC blend door sealing foam, so the next time I tried to change temperatures my blend door could not move. I rarely change my HVAC temp, I’m more of a leave it completely cold type of guy, so it was awhile before I tried to change temperatures.
The insulating foam actually melted, so the door was stuck full cold. I’ve never seen it happen before this or again but I hesitate to ever use such a product now. I’ll use the spray that you use through the fresh air intake, but I don’t think I’ll ever use the foaming cleaner again.
. You foam it up through the evaporator drain tube and let it turn to a liquid and drain back out. My issue was that I guess the foam reacted with my HVAC blend door sealing foam, so the next time I tried to change temperatures my blend door could not move. I rarely change my HVAC temp, I’m more of a leave it completely cold type of guy, so it was awhile before I tried to change temperatures.
The insulating foam actually melted, so the door was stuck full cold. I’ve never seen it happen before this or again but I hesitate to ever use such a product now. I’ll use the spray that you use through the fresh air intake, but I don’t think I’ll ever use the foaming cleaner again.
What cleaner did you use, and what brand vehicle?I used to do these services when I worked in a dealership. Never had a bad experience as a result except with my personal vehicle
My issue was that I guess the foam reacted with my HVAC blend door sealing foam, so the next time I tried to change temperatures my blend door could not move. I rarely change my HVAC temp, I’m more of a leave it completely cold type of guy, so it was awhile before I tried to change temperatures.
The insulating foam actually melted, so the door was stuck full cold. I’ve never seen it happen before this or again but I hesitate to ever use such a product now. I’ll use the spray that you use through the fresh air intake, but I don’t think I’ll ever use the foaming cleaner again.
I happen to have a replacement foam seal for the air box door, so I could take a piece of of the existing messed up seal and spray some cleaner on it I suppose. The plan though is to not have it flood everything and get into the blend doors, that's what I want to try and avoid. Maybe I can get a camera into that area and see when it fills up so I can stop it.
