When should the LENDOU filter be replaced?

The LENDOU air purifier has a patented OptiFilter‚Ñ¢ technology that measures the wear of the filter based on the level of pollutants in the air, the fan speed and the number of hours the device has been used. A light indicator signals that the filter needs to be replaced. This means that you only change the filter when necessary, which saves you money. Thanks to the LENDOU HEPA 13 filter, you can enjoy purified air for 6 to 12 months.