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I have a 5 year old high Efficiency Carrier HVAC system. Been having some moisture/condensation issues and was snooping around and noticed quite a bit of buildup of rust in my AC condensate drip pan. I also get a little condensation dripping out of the corner of the unit. Appears it’s coming from the drip pan. How normal is this? Should there be that much rust in the pan? Do I need to have this issue resolved/looked at asap? System is working fine. Condensate drip line is not clogged and is clear. Don’t notice any issues anywhere else. enter image description here enter image description here

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  • Modern AC's get extra efficiency by having the condensate drip into a pan, and the fan then kicks that water around and blows it on the coils where it evaporates and takes heat with it. There may be a small rubber plug under the AC that you can simply pop off, and the condensate will then drain out like a classic AC unit instead of collecting in the pan.
    – Kyle B
    Jun 16 at 16:20
  • Okay I’ll have a look into that. I didn’t see any plug anywhere. But it looks like my condensate drip line is working just fine and plenty of water is flowing out of it into my floor drain.
    – Mr. le
    Jun 16 at 16:42

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That does not look like rust to me.

It looks like dirt (from dust collection).

Make sure you filters are clean, (the air return filters).

It is normal that the AC sweat a lot in humid air, they are build for that.

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  • This is the best answer I could have hoped for. Any chance I could somehow reach out to you to send you the video I took of this area. So you could get a better look and confirm if it’s really not rust?? That would put my mind much more at ease. Thanks in advance!
    – Mr. le
    Jun 16 at 16:42
  • @Mr.le Add the video link to your original question.
    – gnicko
    Jun 16 at 19:13
  • @Mr.le I do not see you accepted my answer ? you can add the video link to your post. Happy to help anyway !
    – Ruskes
    Jun 16 at 19:28
  • Hi here is the link to the video photos.google.com/share/…
    – Mr. le
    Jun 16 at 21:05
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    @Mr.le you are new to this site so let me explain how it works. On the left you see and arrow up and down a number in between them and a Check mark below it. Those are used to motivate the one responding with points. You are by any means not obligated to use our system.
    – Ruskes
    Jun 17 at 3:41

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