My dust collector motor quit working last night. It was a small portable dust collector rated at only 440 cfm. I'm trying to decide on a replacement and initially thought I would go with the next size up which is rated at 660 cfm which would probably be fine for when I'm sanding at the lathe or using the bandsaw. However for a few dollars more I could get a much larger one rated at 1500 cfm. I think it would be better suited for the band saw work and maybe over kill at the lathe.
My concern is that 1500 cfm could potentially be too much. My shop is 200 square feet. During half the year I keep the doors open when I'm working so drawing 1500 cfm shouldn't be a problem. However in colder months I have the doors closed and an electric heater running. Will 1500 cfm be too much draw with the shop closed up? I could open a window but then I'm going to have a cold shop again.
Would it be possible to use something like this to control the speed of the dust collector thus reducing the cfm for the times when the shop is closed up? I had no issues running my previous (smaller) one this past summer.
Thanks for your insight.