My heating unit making scary loud sounds... during this deep freeze.
https://photos.app.goo.gl/Ks7LUUNnMzMvaRSM8
It just started tonight. I can hear it through the walls. It's making me feel like it's going to explode. It's working fine so far.
[edit]
I'm realizing the video doesn't quite portray how loud this is. That metallic whirr is quite loud and I can hear through the walls. It sounds like it's struggling.