[cillian64]

I was looking into this and one factor is that you still need hot water. So with mini-splits your options are either resistive water heating or having a gas boiler as well. I haven’t seen any systems which do mini-splits and also heat a hot water tank.

[guruz]

Heat Pump Water Heater. You can put it next to high end computer to suck its heat in :-)

https://carbonswitch.com/heat-pump-water-heater-buyers-guide...