I’ve lived in 3, maybe 4 places without central air. The home we had from birth to summer after I turned 6 had window units in the living room and both bedrooms. The home we rented the year we were building our new home. I think the house I rented the first year I was stationed in Nebraska, before I bought my first home. The two apartments I lived in while I was stationed in Germany had no AC at all. My apartments in college had window ACs, so I guess that is more.