I think I read something about Mitsubishi having a whole house (conventional type) ducted inverter heat pump unit in Canada. That is what i would check out, heck if I could get one here I think I would swap out my perfectly good 8yr old Trane system. Inverter technology is the future of the industry and I can't figure out why more mfger's aren't making them yet.
Found it. Search Zuba-Central. Also any Canadian dealers know how to get one of these to the US??