"It was good. It was good, real good," Bosh said Thursday evening outside his agent's office in downtown Chicago.
He also said he had "no offers yet." Later, Bosh was planning to meet with the New Jersey Nets.
Earlier, he had posted on Twitter that Heat president "Pat Riley is very passionate about winning."
The Heat has not made any public comment after any free-agent sessions, though there's clearly high mutual interest. Bosh told The Associated Press earlier this week that Miami is one of his top choices during the free-agent period.
Bosh met with the Houston Rockets after the clock struck midnight in the east on Thursday, formally opening the NBA free-agent window. He talked to the Rockets in Dallas, his hometown, then flew to Chicago for the mid-afternoon session with the Heat contingent led by Riley.
The Heat had talked with Amare Stoudemire and others earlier Thursday in Los Angeles.
Riley was joined for the Bosh visit by team owner Micky Arison and Heat great Alonzo Mourning, among others. It's believed the same group will accompany Riley for his meeting in Cleveland on Friday with two-time NBA MVP LeBron James.