Chosen Solution

What tools do I need?

You’ll need a P5 Pentalobe Scew driver to get the bottom off. To remove the fan you need a T5 torx driver. P5 Pentalobe Screwdriver Retina MacBook Pro and Air T5 Torx Screwdriver MacBook Pro 13" Retina Display Early 2015 Fan Replacement

Easiest way is to just get a can of compressed air and blow it out. Unless you have an air compressor handy, then use that.