Your brush is what actually does the scrubbing — the machine just holds it, spins it, and rolls it forward. So when the floor stops coming clean, the brush is the first place to look. Bristles wear down gradually, so it's easy to miss the drop-off; one week you're going over the same spot twice and blaming the chemistry, and it's really just that the brush lost half an inch of reach since spring.
This is the genuine Nilfisk Advance OEM BRUSH KIT HI FREQ W/RECTIFIER, part number L01789915, brand new in the box. Worn bristles don't just clean less — they make the drive motor work harder, wear the deck unevenly, and cost you cycle time on every run. A fresh brush pays for itself in labor before it pays for itself in performance.
Bristle grade matters for the floor you're on. Softer grades protect finishes and coated floors; stiffer grades are for concrete, unfinished surfaces, and heavy soil.
Not sure which brush is right for your machine? Send us the model and serial and we'll match it up.
