The point in posting the EPA article was to highlight the need to have the system properly tested rather than just adding "freon" or whatever one wants to call it.

The process of "topping off can be a simple one but if the system needs more "freon" that means there may be a leak. If there's a leak then just topping off is not the answer and one would be throwing money away.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….