Anonymous2 years ago-101After how long should the filter be replaced?Show in original language (German)Siggy1012 years ago+220 Helpful answerThe app will tell you how long it has left, and when to change it.I've had mine running for about 6 months, about 6 hours a day and 24h a day for the last 2 months. It still shows over 75% filter life remaining. Comment