Mr.Blonde
Only way outs inna box
Write it up as a safety issue. Mechanic will be forced to reply why he didn't install a fan. I wrote mine up daily for over a month before they finally put in a fan. The reason they weren't installing them to start with was because they were buying the cheapest POS fans they could find that broke after a couple of weeks. Not your probablem. Be persistently annoying and eventually you should get one.
Thanks