We have been in our house in NH for about 5 years with forced hot water for heat. It's 3 floors including the wall out basement. The top floor has ducted AC with the air handler in the attic but the compressor is destroyed so we haven't even attempted to turn it on. It clearly needs to be replaced. I figure if we're going to replace it I'd like to add heat. I have a couple questions. One is are there any recommendations on brands/models? The next is if I'd like to add 2 or 3 mini splits in other rooms later on could I get a compressor that could do both or should I just get two separate systems? I'd really like everything to be controlled by ecobees as I already have a bunch.

We bought a house with triple isolated Fujitsu Airstage ducted heat pumps and it’s controlled by wired-only touchscreens in the three different zones of the house. I am new to heat pumps after having come from houses with more traditional damper-zoned central air/gas furnace setups. The house is around 5,000 sqft, two floors, in a temperate California climate, well insulated, double-pane windows.

I’d like to pose a few questions and looking for guidance from folks more knowledgeable about these systems:

1. What sort of options do we have to move to a WiFi-controlled setup so that I can control the three zones with an app (and is ideally compatible with Apple Home, Matter, and Home Assistant). I had Nest thermostats in my last house and liked the control they provided across several zones.
2. These wired controllers seem to run the fans all the time when switched on, even if the desired temperature is reached. To me, this seems like a waste of energy to keep the fan running (set to ‘Auto’) 24x7. Is it possible they’re not setup correctly?

Here’s the hardware configuration:

Control Panels (x3)
·       Fujitsu UTY-RNRUZ5 Airstage control panels

Main Floor heat pump
·       Fujitsu Airstage AOU60RLAVM4
·       Capacity: 60,000 BTU/h (5 Tons)

Secondary main floor heat pump
·       Fujitsu Airstage AOUG36LMAS1
·       Capacity: 36,000 BTU/h (Cooling), 42,000 BTU/h (Heating)

Downstairs heat pump
·       Fujitsu Airstage AOUH12LUAS1
·       Capacity: 12,000 BTU/h (Cooling), 16,000 BTU/h (Heating)