With mini splits becoming more and more advanced, and more popular, do you think they would ever replace the large 1 unit per house HVAC systems?

Here my thought, with the right thermostat in each room, or a sensor in each room if it’s a dual room system, the sensor could recognize when a person is in that room and automatically begin to cool that room or be on a schedule. At night I only need the bedrooms cooled, but the entire house gets cooled too. Also, it seems it would be worlds cheaper to fix them when one goes down, and if it goes down you still have HVAC in the other rooms.

Seriously considering a couple mini splits in our rehab house vs a traditional system.

If your rental is small enough, it makes sense. The VRBO I just stayed in up in SD was cooled by 2 mini-splits. One on each of the two floors. You needed floor fans to circulate the air but it worked well enough to keep us comfy. House was about 1500 sq ft.

I also know a guy out in Pilot Point that did this exact thing. around a 2800 square foot house I'd guess. Purpose built the house for this type of cooling, Not sure how many systems he put in. Any room he wasn't using he simply shut the door. Had a remote control mounted on wall of each room. Only downside I saw to it was the wall space they took up. And it sort of looked strange to have them everywhere in what was otherwise a high end newer home.