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In my local market, if you ask an installer for a heat pump, you get something from Japan or Korea. I’ve never encountered an American unit.

(I’m referring to normal air-to-refrigerant-to-air heat pumps. I know of a really weird system that is thoroughly American and an utter pain in the arse to replace because it’s specialized and undocumented. It’s quite loud, too, because it’s single-speed, and that single speed is waaaaay too high.)

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The Asian brands make products for the US market—often through subsidiaries that were originally US companies, such as Goodman and Amana. Basically stuff that complies with US codes and standards, and that US HVAC installers can fix without learning anything new. Daikin makes a ton of stuff they don’t sell in the US. Owens Corning makes high density fiberglass batts you can buy in Canada but not in the US.

Trane and Carrier are both US based and do heat pumps. They are more expensive than Mitsubishi or Daikin though.

Some (all?) Trane heat pump models are re-branded Mitsubishi units.[0] Not sure about Carrier.

[0]: https://www.metahvac.com/

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