The beginning of Daylight Saving Time is a great time to change the batteries in all of your smoke detectors and give them a quick check-up.
Smoke alarms with non-replaceable 10-year batteries are designed to remain effective for up to 10 years. If the alarm chirps, warning that the battery is low, replace the entire smoke alarm right away.
Smoke alarms with any other type of battery need a new battery at least once a year. If that alarm chirps, warning the battery is low, replace the battery right away.
When replacing a battery, follow the manufacturer’s list of batteries on the back of the alarm or manufacturer’s instructions. The manufacturer’s instructions are specific to the batteries (brand and model) that must be used. The smoke alarm may not work properly if a different kind of battery is used.
If you’re doing that, think carefully about where you install them. Remember that fire, heat, and smoke rise, so smoke detectors should always be installed on or near ceilings in as many rooms as possible. Install them at the top of all stairways and in the center of rooms and hallways
Also remember to never place a detector in a corner, near a vent, or a window opening. And finally don’t forget to include smoke detectors in your basement, attic, and garage.