The Chinese using it in large building water chillers? It’s a really good, efficient refrigerant.
We replaced our air conditioner a couple of years ago. Our old one ran on the old refrigerant. Kept it set at 78 all summer long and was comfy. Our new air conditioner is set on 76 or it feels hot in here. Hubby likes it on 75...which I change all the time. lol We had new energy efficient windows put in too so I think it’s the new refrigerant. It just doesn’t work as well.