Mitsubishi Electric or Mitsubishi Heavy Industries?

I sourced opinions far and wide and in the end it seemed to be a coin toss between Mitsubishi Electric and Daikin. A lot of it comes done to parts availability, and both seem very strong in Australia.

I live in a cold climate

Mitsubishi is gold standard in cold climates. It’ll pull heat from -30F air.

There's no reason that's unique to Misubishi. My parents Fujitsu has done so.

Both brands trade off as best cold weather heat pumps in ratings/evaluations (quick Google search should confirm), they’re both fairly high quality versus competitor brands.

Dealer salespeople are loyal to their brands and shit talk the other brands, so I'd take that with a grain of salt. I own both brands, they are basically the same.