Inquiry Regarding Air Purifier Device Behavior on Google Nest UI

[Chintanp038]

Hello Google Nest Support Team,

We are currently integrating the Air Purifier device type that includes both HEPA filter and Active Carbon filter monitoring implemented using their respective Matter clusters.

During our validation and testing with the Google Nest UI, we observed the following issues:

1. Only the HEPA filter UI is displayed — the Active Carbon filter UI does not appear.
2. The HEPA filter lifetime value consistently shows “Good” and 100%, even when we modify the UpdateCondition from 0% to 100% in steps of 5 every 5 seconds and update the corresponding ChangeIndication attribute accordingly.

Could you please guide us on whether additional requirements, UI constraints, or certification steps are needed on the Google Nest side to ensure proper visualization and data updates for these filter monitoring clusters?

We appreciate your assistance and look forward to your guidance.

Thank you,

Chintan Patel

[arm_dpe]

Thanks for reaching out. Could you please provide more details for your UI issue:
- Have you ensured that your Matter device successfully includes both the necessary clusters/endpoints in its Descriptor Cluster, and that both sets of attributes are readable by the Google Commissioner?
- Do you have a second endpoint defined specifically for the Active Carbon filter, or are both filters represented within the same endpoint? (The way multiple filters are modeled can significantly affect UI rendering.)

[mixmax]

This behavior is likely related to current Google Nest UI support rather than an issue with your Matter implementation.

[Chintanp038]

Yes.. It is a UI issue with Apple Home for both filters shown. Related to the Condition update in HEPA is now working.