Where should smoke detectors not be installed in a high air movement area?

Smoke detectors should not be installed directly in the air stream of supply registers. When a smoke detector is placed in this location, the airflow can interfere with its ability to detect smoke. The force of the airflow from the supply register can disperse smoke particles before they reach the detector, potentially delaying detection during a fire emergency.

In high air movement areas, such as those with HVAC systems that actively circulate air, it is essential to ensure that smoke detectors are placed in locations where smoke can accumulate, allowing for accurate and timely detection. Other options, such as placement near windows, in corners of rooms, or close to ceilings, may be less effective compared to ideal locations for smoke detection but are not as critically problematic as the placement directly in the airflow of supply registers.