"S. Barker" wrote

home units have changed refrigerants, (not coolant) but the old r-22 is
still used and still available. Beware of misinformation.

My bad if i used the wrong term. Can you explain the difference between
refigerant and coolant? All I know is in *my area* the old stuff is barely
obtainable. My system though is far older than hers.

I am checking prices as sometime in the not too distant future, we will need
to replace the AC portion. It's actually older than such units were rated
for at the time.