It all depends on wether or not you leave your equipment on all the time and how hot things get. The heat trapped by a plexi-glass cover will be more damaging than some dust.
My house was dust central until I bought an electronic air cleaner for the furnace. It may be somewhat expensive but in my case it was well worth the money. Goodluck.
My house was dust central until I bought an electronic air cleaner for the furnace. It may be somewhat expensive but in my case it was well worth the money. Goodluck.