Black Fluorescent Light Kill Mold Central AC, Maintenance, Install Fluoresent Black Light To Kill Mold , Has Anyone Heard Of This?

Central AC, maintenance, install fluoresent black light to kill mold , has anyone heard of this? - black fluorescent light kill mold

Local businesses repair area for the annual maintenance of our AC unit used in the attic. You want to install a fluorescent black light in our unit by unit, is to be cleaned of mold. They said that by installing this light, the growth of mold in the unit to maintain and keep to guarantee our service.
I live in South Texas.