Will the filter lifespan decrease if the Xiaomi Smart Pet Care Air Purifier is used without a filter?

The filter's lifespan will decrease if the Xiaomi Smart Pet Care Air Purifier is used without a filter. The purifier is designed to calculate the filter's lifespan based on factors such as air quality, running status, and usage time.
However, because the device cannot detect whether a filter is installed, it will continue to operate as usual, regardless of the filter's presence. This means that even without a filter, the purifier will still run, consuming energy and potentially reducing the lifespan of the filter when it's eventually installed.
To ensure the proper functioning of the device and preserve the filter's lifespan, it is essential to always have the correct filter in place during operation.