Heat I of Robot Wars: The Second Wars was the ninth of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat I was originally broadcast on January 15, 1999 on BBC Two. The broadcast managed to attract 5.58 million viewers, a decrease of 360,000 viewers when compared with the previous episode. According to BARB, this meant it ranked second in the top thirty highest rated BBC 2 broadcasts during 11-17 January, behind only Gimme Gimme Gimme. A behind-the-scenes spin-off episode was also broadcast on Robot Wars Revealed on BBC Choice.