The next case I go to will definitely have air filters. As much as I like this case - that really has been my one true bug bear with it.
Last winter I resorted to creating some 'ghetto' filters (nylon stockings

) but when summer came back - off came the stockings. Just like the ladies.
Now that summer is waving goodbye, I'll be able to reintroduce the stockings again. Again, just like the ladies
I had a low powered air compressor that I used to used to clean/clear non-electrical components, but that literally went up in smoke a few weeks back so as far as pristine conditions go - my computer is not. By the same token, it's certainly not at the level where it affects noise/temps.