U.S. Republican President-elect Donald Trump on Thursday said he was "making progress" to keep Carrier Corp's heating, air conditioning and refrigeration business in Indiana.

"I am working hard, even on Thanksgiving, trying to get Carrier A.C. Company to stay in the U.S. (Indiana). MAKING PROGRESS - Will know soon!" Trump said in a post on Twitter.

I am working hard, even on Thanksgiving, trying to get Carrier A.C. Company to stay in the U.S. (Indiana). MAKING PROGRESS - Will know soon!

— Donald J. Trump (@realDonaldTrump) November 24, 2016

Carrier is part of United Technologies Corp's UTC Climate, Controls & Security unit.