Carneal's announcing career received a significant boost when he took over the Twins broadcasts, as it united him with legendary broadcaster Halsey Hall, after whom many major league broadcasters have modeled their work. Hall's influence on Carneal's career development is legendary.
Beginning in 2002, Carneal scaled back his workload to providing play-by-play for half of Minnesota's home games. By 2007, he was scheduled to work only 36 games. Until 2007, Carneal worked in partnership with fellow radio commentators John Gordon and Dan Gladden.
Herb Carneal died on April 1, 2007 of congestive heart failure. The Twins dedicated their 2007 season to Carneal, wearing patches on their sleeves in his honor.