The forum brain stock seems to be pretty smart and mostly warm climate based so I'm assuming all experts on ductless air conditioning. I have a 25-year-old Mitsubishi ductless in my house right now . it's been repaired twice and currently not working and I think it would bring me great hero status at home to put in a new system. Anything to watch out for? I'll probably go with Mitsubishi or Fujitsu. Tia