Pollen filter hk.

Periodic maintenance of my friends approached, the pollen filter is carbon and there are normal ones. Thanks..

Hello Xmen,
Carbon pollen filters retain most, if not all, of the bad smell and some toxic gases, along with dust in the air. However, their lifespan is usually 3 to 6 months. It is useful to change it frequently. Normal pollen filters only have dust holding feature. Respects..

Thank you so much for your answer ... it will be better to change it often then ..