Anonymous10 years ago+220How long does it take to change a filter like this? Is it the same for all units?Show in original language (German)Anonymous10 years ago • purchased this product-112purchased this productOf course, it depends on the air quality in the room. In winter, I run the unit every day. Then I have to put in a new filter every 30-40 days. Unfortunately, I can't answer whether it's the same for all units. I hope this helps you.Show in original language (German)Comment1 comment