i would use it once i na while
I cant keep a vacuum just sitting there for to long i have to take it out put it together and use it. All my vacuums get a run every few months, of course my compact electra c9 is my daily driver and works wonders .My newly acquired electrolux model zb 86 was fully rebuilt and is now near mint i cant help but use it and vacuum whit it just to nice but that is just my opinion . i do put all my vacuums in the same room temperature is control and check often not to cold not to hot not to humid hose are put away properly ect .
