How low is the threshold for power on time relative to indoor DC exhaust? It seems pretty low thresh hold.

I reviewed 10 pages of threads here eariler today. I get indoor air quality. I live in an area where we have really bad outdoor air quality, one of the two chronically worst places in the USA. I know more about PM2.5 than any human ought to have to learn. I get that lung exposure to fine particles is lifetime cumulative and irreversible.

It looks to me like before retirement I need to upgrade my DC to 220/240vac so I can get enough air flow to pick up my dust and get it filtered for indoor exhaust. I don't run any AC in the summer, but my heating bills, blazing blue barnacles. Heating is my second biggest reccuring expense, second only to the mortgage, even spread out over 12 months.

On the one hand, for six months of the year, I can roll my jointer or planer, and roll my DC (cloth bag exhaust filter) out onto the driveway for chip collection and let the dust blow away outdoors. If I exhaust the DC outdoors ( I can do that, though few of us can) I am going to need a big whopping wallop of BTUs to keep all my edged tools from rusting at the worst places in the cold months.

So fundamentally my question is can anybody exhaust their DC outdoors without getting rust on their plane irons or chisel edges? Or planer knives? Where, roughly, do you live and how often are you running your DC? How robust is your HVAC? I am thinking if I want the option of running my planer or jointer pretty much every day I am going to have to keep the DC exhaust indoors and filter agressively.

Thanks. I wonder if we should have a sub-sub forum, workshop threads not DC related.