United Technologies owns Carrier, Bryant, Tempstar, Heil, ComfortMaker, ArcoAire, Clare, Day & Night, Payne, Keep-Rite, and Lincoln.

Ingersoll-Rand owns American Standard and Trane.

Goodman owns Amana, Janitrol and Goodman HCP.

York owns Luxaire, Coleman and York HCP.

Lennox International owns Armstrong and Lennox HCP.

Nordyne owns Frigidaire, Tappan, Kelvinator, Philco, and Intertherm.

Paloma Industries owns Rheem, Ruud, and Weatherking.

SPX Corp owns Williams-Thermo and Weil –McClain