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Do you have any more info about this? I am curious about the history of residential HVAC in the US.
by brendawalsh 6y ago
Do you have any more info about this?
I am curious about the history of residential HVAC in the US.
- twblalock 6y agoI only really know about it in the area where I live. AC was not generally included in new construction in the San Francisco Bay Area until the 1980s or 1990s. I wouldn't be surprised if a majority of apartments in the area still didn't have AC, based on the amount of window AC units I see. However, most homes built in this area were built central ducted heating systems since the 1950s-1960s, when there was a massive building boom. Most older homes have had central heating added as a retrofit decades ago -- even old Victorian homes. So when people upgrade to AC today, it's very common to just use the same ducts. It's not easy to find a house with a ductless mini split AC system around here. Most homes have a single-zone central system that cools the entire house.