Hi guys, I have recently started experiencing noise in my Acura TL 2008 while pushing down acceleration pedal AND the fan in cabin is on. When the fan is off, everything works fine without any noise. The noise is quite loud.
Any ideas what could it be and how to fix it?

Thank you!

 

Could be your AC compressor

 

Is there any way I could check whether it is a compressor or not, or do I certainly need to take it in?