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[–] 3 pts

We use them in HVAC as well.

[–] 2 pts

Yep, I've probably found hundreds of them over the years in my drier. One fun job was going behind the beaners that installed 14 vrf systems in a building and didn't wrap anything while brazing, they walked off the job and accused maintenance of sabotaging things. 300+ valve cores changed over the course of a month. They picked the lowest bidder and ended up paying more in the end.