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Best for daytime cleaning in occupied offices, as its 2-speed motor operates at a quiet 69 dB. It is available for $529 at WebstaurantStore.com .

A powerful cordless solution that eliminates tripping hazards from trailing cords. It offers four power levels and a brushless motor for high demand applications. Available for $1,679 at Contractor Tool Supply . buy commercial vacuum cleaner

This 10-quart unit features a four-level HEPA filtration system that captures 99.97% of allergens. Its ergonomic, open-weave harness is designed to keep users cool during long tasks. It is available for $529.90 at Home Depot . Best for daytime cleaning in occupied offices, as