Should I consult a professional in cleaning my laptop's fan?

I have a Sony Vaio Fit Multi-Flip SV-F15N1Z2EB Convertible. In case anyone is confused about my laptop's description, it is a convertible touch-screen with no disk-drive to be found (Windows 8). http://www.notebookcheck.com/Test-Sony-V...

My laptop's fan has been making loud humming noises since last February (I bought this laptop a few months before) and I figured that it was due to it's need to be cleaned out. I don't exactly mind the noise every time I use my laptop but I do prefer it to not make as much noise. I've attempted a few times to pry open the keyboard and loosen the screws found at the bottom but of course I failed in accessing the inside of my laptop. It seems to be a laptop you can't open yourself without professional help.