My PC has to stay in my bedroom, which has carpet, and I'm getting an absurd amount of dust buildup. It sits on a wooden board rather than directly on the carpet, but after cleaning it, the dust seems to return within a couple of days. The AIO radiator and fans collect the most dust. I live in the UK, where it's often raining, so taking the PC outside to blow it out isn't really practical. What changes to my room, cleaning routine, or case airflow would help reduce the buildup?
5 Answers
Start with the room itself: vacuum the carpet at least weekly, wipe down nearby surfaces, and wash bedding regularly. A lot of airborne dust comes from carpets, fabric, and bedding. A small robot vacuum running a few times a week can also make a surprisingly big difference.
Raise the PC higher if possible. Even on a board, it’s still close to the carpet where dust settles and gets disturbed. Putting it on the desk or another elevated stand should reduce how much debris the intake fans pull in.
An air purifier placed near the PC can help remove airborne dust before the computer pulls it in. Keep up with normal room cleaning too, since an purifier won’t solve dust coming directly from a dirty carpet or bedding.
Put it near the computer rather than across the room, and choose one with a replaceable particle filter. You don’t necessarily need an expensive model.
Also check whether the radiator or intake filters are clogged and clean those more often than the rest of the system. If you add extra filtering material, make sure it doesn’t block airflow enough to cause higher temperatures. For routine cleaning indoors, use compressed air while preventing the fans from spinning freely, then vacuum up the loosened dust around the case.
Check the case airflow and aim for slightly positive internal pressure: more filtered intake airflow than exhaust airflow. That way, air tends to leave through the gaps instead of dusty air being pulled in through every opening. Make sure the intake fans have properly fitted dust filters and clean those regularly.
The exact fan arrangement depends on the case, but three filtered intakes and two exhaust fans is a common starting point. The important part is keeping the intake side filtered and avoiding strong negative pressure.
A robot vacuum helped me more than an air purifier because it kept the dust from getting kicked back into the air in the first place.