Burglar and Residential Fire Alarm Practice Test

Airflow from a ceiling fan can push smoke away from the detector or create drafts that delay sensing. To avoid that interference, keep the smoke alarm at least three feet away from the fan. This minimum distance helps smoke reach the sensor promptly and reduces false alarms caused by air movement around the fan. Some detectors may have additional placement tips, but the three-foot rule from a ceiling fan is the standard guidance for reliable performance.