A Nilfisk exhaust filter with HEPA grade can remove 99.7% of airborne particles. This includes anything 0.03 microns in size, like dust, pollen, and other allergens from the air that passes through the HEPA filter. Therefore, a central vacuum machine with a True HEPA filtration can clean indoor air pollutants more effectively.  This exhaust filter reduces noise replacing the need for a muffler and cleans the air exhausted from the machine.

Specially designed to trap carbon dust, the fine black dust produced by the motor, which would normally end up on surfaces around the central vacuum and then in the ambient air.