Test All Smoke Alarms (Detectors) and Annually Replace Batteries CPSC Document #5077 You can prevent tragedies simply by testing and maintaining your smoke alarms and practicing a fire escape plan. All smoke alarms in your house should be tested once a month, and their batteries replaced annually. Every family should develop a fire escape plan and practice it at least twice a year. The U.S. Consumer Product Safety Commission (CPSC) recommends these measures because working smoke alarms and a fire escape plan will increase your protection in case of a fire. Every year in the United States, about 3,000 people lose their lives in residential fires. Most fire victims die from inhalation of smoke and toxic gases, not as a result of burns. Most deaths and injuries occur in fires that happen at night while the victims are asleep. Properly installed and maintained smoke alarms in the home are considered one of the best and least expensive means of providing an early warning of a potentially deadly fire. Smoke alarms save lives, prevent injuries, and minimize property damage by enabling residents to detect fires early in their development. The risk of dying from fires in homes without smoke alarms is twice as high as in homes that have working smoke alarms. All smoke alarms should be tested at least once a month to make sure they operate properly. If a smoke alarm is battery operated, replace the batteries at least once a year to make sure the alarm will work when it is needed. It’s a good practice to make replacement of batteries a seasonal routine, such as when resetting clocks in the fall or spring. Always follow the manufacturer's instructions for testing smoke alarms and replacing the batteries. If your battery-powered smoke alarm begins to emit a low-power warning, usually a chirping sound, replace the battery immediately with a fresh one. This will ensure that your smoke alarm will continue to provide protection.