# What does it mean when the low side a/c line sweats?

**URL:** <https://community.cartalk.com/t/what-does-it-mean-when-the-low-side-a-c-line-sweats/146261>\
**Category:** Maintenance/Repairs\
**Created:** [August 8, 2019, 1:44pm UTC](https://community.cartalk.com/t/what-does-it-mean-when-the-low-side-a-c-line-sweats/146261 "2019-08-08T13:44:38Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![johnf123\_155896](https://avatars.discourse-cdn.com/v4/letter/j/e495f1/32.png) [@johnf123\_155896](https://community.cartalk.com/u/johnf123_155896)\
**Post date:** [August 8, 2019, 1:44pm UTC](https://community.cartalk.com/t/what-does-it-mean-when-the-low-side-a-c-line-sweats/146261/1 "2019-08-08T13:44:38Z")

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It is very wet and almost dripping. Is this normal or could it mean the system is perhaps over or under charged?

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**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\
**Post date:** [August 8, 2019, 2:36pm UTC](https://community.cartalk.com/t/what-does-it-mean-when-the-low-side-a-c-line-sweats/146261/2 "2019-08-08T14:36:56Z")

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Normal. You should also see an evaporator condensation drip under the car.

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**Author:** ![shadowfax](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/shadowfax/32/13026_2.png) [@shadowfax](https://community.cartalk.com/u/shadowfax)\
**Post date:** [August 8, 2019, 2:42pm UTC](https://community.cartalk.com/t/what-does-it-mean-when-the-low-side-a-c-line-sweats/146261/3 "2019-08-08T14:42:30Z")

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Yep. Just means it’s hot out, and the line is cold, and moisture is condensing on it out of the air.

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**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\
**Post date:** [August 8, 2019, 4:37pm UTC](https://community.cartalk.com/t/what-does-it-mean-when-the-low-side-a-c-line-sweats/146261/4 "2019-08-08T16:37:16Z")

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Cooler air is more dense and contain the same level of moisture as warm air. So when warm meets cold, the water condenses on the pipe, windows, etc.

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**Author:** ![johnf123\_155896](https://avatars.discourse-cdn.com/v4/letter/j/e495f1/32.png) [@johnf123\_155896](https://community.cartalk.com/u/johnf123_155896)\
**Post date:** [August 8, 2019, 6:45pm UTC](https://community.cartalk.com/t/what-does-it-mean-when-the-low-side-a-c-line-sweats/146261/5 "2019-08-08T18:45:03Z")

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OK thanks. I had recharged my system and was concerned something may have went wrong

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**Author:** ![eddo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/eddo/32/2594_2.png) [@eddo](https://community.cartalk.com/u/eddo)\
**Post date:** [August 8, 2019, 7:35pm UTC](https://community.cartalk.com/t/what-does-it-mean-when-the-low-side-a-c-line-sweats/146261/6 "2019-08-08T19:35:57Z")

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nope, sounds like something went right! 🙂