Because I did not use the dehumidifier on a daily basis for 24 hours, my filter lasted for over a year. The new filter was not the same as the one that originally came with the dehumidifier, which was identical on both sides. The new filter has one side that is like the old filter, and on the other side, it has a black mesh. The store where I bought it told me that the black mesh is facing towards the dehumidifier, while the regular side, like the old filter, faces outward (where the air enters). They also informed me that the company (inventor) changed the design of the filter, and this is how the specific new filter is now.

The air purification with this filter truly saved us during the fires last year in Evros, by cleaning the smoke and harmful particles from inside the house. We had our air-conditioning units closed (both without air recycling) and all windows and balcony doors closed. Outside, the atmosphere was suffocating and everything was covered in ashes, but inside the house, you could breathe clean air, despite the intense heat. Having a child, this filter literally saved us!