Several of the film's scenes were cited by the news media as resembling later robberies. This included armored car robberies in South Africa, Colombia, Denmark, and Norway and most famously the 1997 North Hollywood shootout, in which Larry Phillips, Jr. and Emil Mătăsăreanu robbed the North Hollywood branch of the Bank of America and, similarly to the film, were confronted by the LAPD as they left the bank. Phillips had a copy of the movie where he lived. This shootout is considered one of the longest and bloodiest events of its type in American police history. Both robbers were killed, and eleven police officers and seven civilians were injured during the shootout. Heat was widely referenced during the coverage of the shootout.
To make the long shootout more realistic they hired British ex-Special Air Service special forces sergeant Andy McNab as a technical weapons trainer and adviser. He designed a weapons training curriculum to train the actors for three months using live ammunition before shooting with blanks for the actual take and worked with training them for the bank robbery.
For his film The Dark Knight, director Christopher Nolan drew inspiration in his portrayal of Gotham City from Heat in order "to tell a very large, city story or the story of a city". In 2016, a year after its 20th anniversary, Nolan moderated a Q&A session with Michael Mann and cast and crew at the Academy.
Heat was one of the inspirations behind the highly influential 2001 video game Grand Theft Auto III as well as its 2013 sequel Grand Theft Auto V, notably the mission "Blitz Play" where the crew blocks and then knocks over an armored car in order to rob it.
In March 2016, Mann announced that he is developing a Heat prequel novel as part of launching his company Michael Mann Books. As of January 2019, the book has been completed.
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