Residential:

Lennox: https://www.lennox.com/

Fujitsu: https://www.fujitsu.com/global/

Mitsubishi: https://metahvac.com/

Commercial:

Trane: https://www.trane.com/commercial/north-america/us/en.html

Carrier: https://www.carrier.com/commercial/en/us/

York: https://www.york.com/