My personal experience: I just finally got off the R22 treadmill, in 2022 you'll probably be looking at over $150 per pound (cost me $95 per pound in 2021) due to the fact that all new manufacture of Freon is illegal in the U.S. Anything you'll get now will be from dwindling existing stock or reclaimed.
I do not know the answer to your question. However, I don't let anyone touch my air conditioning unit except for a number 1 air
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