We had the first Airfloss shared, ie repeatedly changed the essays. After three months, the essays were leaking and no longer engaged. One month later, the housing is torn at the edges. I was on the Philips customer service but surprised more than positive. Within 36 hours me a new replacement unit has been sent in advance.
We bought a second Airfloss, now holding the tradition longer. We have the Airfloss several times a day in action and that is us now worth the money. We go to professional oral cleaning only 1x in the year, so it pays off safely.
1 star deduction for defects and rapid wear with frequent changes, 1/2 star deduction for high price. 1/2 star back for good service with guarantee = 4 stars