A Kirby doesn't just clean by air flow. They keep improving there brush rolls. The airflow and the brush roll
together deep clean. Also it is important to change the belt, before it starts slipping. They make a very
stiff brush roll, which I am using now.. and it grooms my carpet better than there softer brush rolls. I have
plush carpet. If you have berber carpet, you would not use this stiff brush roll.
PR-21
Bud