Filter reminders that actually work
- Change cadence: 1" filters every 30–60 days; 2" every 60–90; 4–5" every 6–12 months. Check monthly if you have pets, construction dust, or allergies.
- Right size, right way: Make sure the filter matches the return size and arrows face the airflow direction on the cabinet.
- Clear returns & supplies: Keep furniture and boxes away from grilles; vacuum grilles if visibly dusty.