The True HEPA Filter is the specially designed replacement filter for the Pawtins Pet Air Purifier. While all orders of the Pet Air Purifier already come ready with one filter included, the additional filters available here are supplementary to that included filter. 

   

It's easy to replace with no tools required. Simply remove your old filter and replace a new one when needed. 

   

For optimal performance, we recommend changing the filter once every 6-9 months, depending on the amount of use.