No shop vacuum has the power or longevity to replace a dedicated dust-collection system, but a number of them will work well enough as portable dust collectors for benchtop machines in small shops or as backups to larger systems. The 13 vacuums I looked at were quieter than those of a few years ago, and all had adequate power as long as I kept the filter from clogging. I found that the better performers had filters situated horizontally above the tank. Hose diameter also is critical to the function of a vacuum, particularly when the machine is used as a dust collector.  A 2-1/2-in.-dia. hose is good for planers and routers, but a small hose diameter is best for small portable tools like sanders and saws.

I found the Porter-Cable to be a well-designed machine. Though a little louder than some, its accessible filter system, relatively light weight, large collection tank, bayonet-style locking hose connector, exhaust diffuser, static grounding, and auto-start feature made it a strong finisher. I just wish a larger-diameter hose were standard equipment.

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