They keep changing the freon every couple years. It is stupid.

Worst freon I ever encountered was in a 1940s-50s fridge when I was cleaning out houses. I always used to just hit a line w/ an ax and let the freon purge so we could take fridges, etc to the dump. This one had some nasty shit in it. If you were within 10' you got high and ill. I pushed it over so the crap shot into the ground, but 2 days later when I was about to put it on a truck, the crap started pissing out again. I ran just as the high was kicking in.