Boy I sure miss good old R-12

[MikeInNH]

Here is a Top refrigeration expert explaining how good R12 was. He alludes to the fact that it contributed to the ozone hole, but we know that’s impossible because just like sf6 gas, its heavier than air. So unless we shot cans of r12 up into space with rockets, R12 isnt going to get up there.

If that was the case, then all we’d be breathing is nitrogen. Air is a mix of mostly nitrogen and Oxygen…but you can find other much lighter gases like argon and carbon monoxide.