Where should smoke detectors be placed outside of each sleeping area?

Smoke detectors should be placed within 21 feet of any door leading to a sleeping area to ensure early detection of smoke or fire while minimizing the risk of annoyance from false alarms, which can occur when placed too close to bathrooms or cooking areas. This distance allows for effective monitoring of potential hazards while maintaining a balance that protects residents from unnecessary disturbances.

Placing detectors too close to doors (less than 10 feet) could lead to false alarms, particularly if the door leads to a bathroom or another area where steam or heat could trigger the alarm. Additionally, only placing detectors in adjacent rooms may not adequately cover the entire area, reducing their effectiveness. Hence, the guideline of 21 feet provides a sensible compromise to enhance safety and functionality in residential settings.