If you feel anxious and the equipment is vented (holes or slots on the top of the case), just remove the top cover every few years and vacuum the dust out. Make sure you unplug first! If equipment isn't vented, don't worry about it; it'll be cleaned if you ever have to have it serviced.
Keeping your components Dust Free
Curious as to how others keep the dust off and out of their components. Is this a long-term concern or should I not worry about it? I currently have my integrated sitting on top of my A/V stand under my television. Dust isn’t crazy bad, but I’m sure it will accumulate after a few years.