once every 2-4 years when I get in there for what if we are talking about the system unit. in principle, I can almost never, since I try to keep the cases as closed as possible.
periphery as it gets dirty. monitor with heavy pollution, as I'm afraid to damage the matte layer.
Sistemnik once every half a year, before the summer I change the thermal pastes on the process and video, Claudia, mouse and monitor as they get dirty
Once every 2 months I clean it with a vacuum cleaner, the rest I clean with wet wipes.
Semiannually. With proper organization of ventilation in the case and the absence of pets, this is enough. Dust minimum.
Once every one and a half to two years. The house is always cool, a millimeter of dust does not affect cooling in any way. When I lived in an apartment, yes, it was blowing dirt from the street, it was hot in the summer forty, I had to clean it often and change the thermal paste, I couldn’t stand it.
At least once every 3-5 months, and it happens by itself when I do some minor upgrade.
It all depends on how dusty your apartment is. I clean at home, but my window looks out onto the highway where they often drive and there is a lot of dust, so it’s better to clean it once every couple of months. My brother cleans once a year, minimum dust.