I just made a quick module as a reminder for myself to change the filters for my ventilation system.

It monitors the Shelly power consumption of the system, providing visual alerts when filter maintenance is needed (based on adjustable power values - I’m still playing to find the correct value for my system).

Maybe also useful for aquarium filters, HVAC systems, or any filter with power monitoring using a Shelly device.

Features:
✔ Real-time Shelly power monitoring
✔ Color-coded status indicators
✔ Customizable alert thresholds
✔ Compact, clean display

MMM-FilterMonitor