How far away from HVAC diffusers should smoke detectors be installed?

Smoke detectors should be installed a minimum of 3 feet away from HVAC diffusers. This distance is important because HVAC systems can interfere with the operation of smoke detectors. If smoke detectors are placed too close to a diffuser, the airflow generated by the HVAC system can cause smoke to disperse before it reaches the detector. This may lead to delayed detection of a fire, compromising safety.

By adhering to the minimum distance of 3 feet, the effectiveness of the smoke detection system is maximized, ensuring that smoke particles have a better chance of being detected as they rise and accumulate. This guideline is established in various building codes and fire safety regulations aimed at optimizing the performance of detection systems in relation to air movement within the environment.