Matthew Lander, 20, from Netherton, graduated from the City and Guilds LCGI award for WorldSkills, the equivalent to the master craftsman award, which is usually only awarded to people aged over 21.
Matthew was praised by his tutors.
Simon Bartley from UK Skills said: “Matthew’s achievement is a testimony to the hard work and training he went through and rewards the commitment he has shown in aiming to become one of the world’s finest refrigeration engineers.
“To do this at such a young age just proves how talented Matthew is.”
The LCGI can only be awarded to those over the age of 21, but Matthew received a certificate to say that he had met the requirements and will be able to receive his LCGI once he is of age.