Does Reb Moshe talk about air conditioners?
The teshuvah which I posted does not specifically address air conditioners.
Anyway I was told by a Posek here in Staten Island that Reb Moshe revised his psak in later years.
Doesn’t seem very likely.
Please research.
If you would provide a name, someone could research. Otherwise, it’s hard to prove a negative. Meanwhile, the teshuvah I posted was written in תשכ”ז, and R’ Dovid continues to asser (as per ubiquitin), so I’ll assume that he never retracted.