# Subaru Outback AC Flowing Churning Noise **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** outback, noises, airconditioning, subaru\ **Created:** [September 11, 2023, 4:27pm UTC](https://community.cartalk.com/t/subaru-outback-ac-flowing-churning-noise/192816 "2023-09-11T16:27:37Z")\ **Posts on this page:** 2\ **Page:** 2
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [September 11, 2023, 7:33pm UTC](https://community.cartalk.com/t/subaru-outback-ac-flowing-churning-noise/192816/21 "2023-09-11T19:33:27Z")
The sound of refrigerant flowing through the evaporator coil, some manufactures do a better job of concealing that noise than others. > [@rhwilding\_186822](#): > > I had read that if the evaporator is not working properly or got dirty in some fashion, then it can grow mildew which causes a musty smell. A cold evaporator will collect raspatory moisture and sweat from the passengers if the system is set on “Recirc”, use fresh air to reduce odors. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [September 11, 2023, 9:15pm UTC](https://community.cartalk.com/t/subaru-outback-ac-flowing-churning-noise/192816/22 "2023-09-11T21:15:16Z")
I can’t speak to OP’s specific A/C configuration, but I replaced my home refrigerator w/a 2020 model, and it uses a different type of more eco-friendly refrigerant. The manual says the customer should expect considerable more noise from the fridge compared to older Freon-designs, and the manual is correct. All sorts of weird noises, hissing, gurgling, buzzing, but the fridge works perfectly, just normal sounds with that refrigerant I guess. So if sounds remain the same since purchasing car, maybe it is something like that, nothing wrong, normal, just have to live with it. [Previous page](https://community.cartalk.com/t/subaru-outback-ac-flowing-churning-noise/192816.md?page=1)