The Insignia 2-in-1 Handheld/Stick vacuum brush bristles can become worn down from continuous use. The bristles in the head might get damaged and need replacement, or the head might become obstructed with debris. Use this guide to help replace the brush head in the event of imperfect performance.
Unscrew the single 12.0 mm Phillips #2 screw on the right side of the bottom of the vacuum head.
Lift and pull up on the brush retention clip.
Pull brush up and out to remove.