Chadov began acting at school, then continued as amateur actors at the municipal theatre-studio in Peredelkino, Moscow Oblast.

While a student, Chadov made his film debut in a supporting role in Avalanche (2001) by director Ivan Solovov.

Andrei became famous after starring in television series The Cadets, where he played one of the main characters: the young Peter Todorovskiy.

For this role, Andrei received the prize at the festival "Moscow Premiere" in the category Best Actor.

During filming of the television show Big Race Chadov met Svetlana Svetikova, who became his girlfriend, although they broke up in the spring of 2010.