Most people do this wrong. This is how often you should update everything.

Smoke detectors are essential for home safety. Their proper functioning is therefore crucial. Test your smoke detectors monthly by pressing the test button to ensure they are working. Replace the batteries at least once a year, or immediately when you hear the low battery beep. It is also advisable to replace the entire smoke detector every 10 years.
11. Water filter: Replace every 6 months
Water filters help remove contaminants and improve the taste of your drinking water. However, over time, they can become less effective due to the buildup of contaminants. To ensure your water stays clean and safe, you should replace your water filters every six months or according to the manufacturer’s instructions. This applies to both refrigerator water filters and filters in standalone filtration systems.