Use Alexa for instruct quide the end user how to replace the Filter step by step.
This could be done by Voice or if an Alexa with Screen is available make underline the instruction with an Video.
This could be intiated by the Data collected from the device send an push notification to App with a hint to ask Alexa how to replace or even to Alexa directly.
Even a Alexa order process could be implemented to order the filters when needed as long as it is makes the live easier for the End user