MaFrieE2 years ago000Hello all. Is it possible to display how long the air filter has been in operation in total? LGShow in original language (German)BreiterPhonix802 years ago • purchased this product000purchased this productNo The running time of the current filter is not displayed. The unit signals when the filter is to be changed. Here is more information https://www.philips.ch/c-p.... - My little-used unit is for sale.Show in original language (German)CommentWach182 years ago • purchased this product000purchased this productNo, unfortunately you can't.Show in original language (German)Commentralfdoller2 years ago • purchased this product000purchased this productI'm just checking to see if I need to change it.Show in original language (German)Comment