The unit runs 85+ automatic self-tests daily, weekly, and monthly, so no daily manual check is required. Best practice is a brief weekly visual check of the green Ready indicator on the front of the unit, and a more detailed monthly inspection of the pad cartridge expiration date, battery installation date, and external case for damage. The AED will chirp audibly if it identifies a problem between scheduled inspections, so the device essentially monitors itself. Build the visual check into your weekly household routine (e.g., when you take out the trash or check smoke detector batteries).
