Which approach best reduces false alarms from cooking, steam, or vehicle exhaust?

• A. Increase detector sensitivity to catch more events
• B. Proper detector placement, using detectors with appropriate sensitivity, and zoning or multi-criteria detectors
• C. Remove detectors
• D. Rely on occupants to ignore false signals

Answer: (B)

Managing false alarms from cooking, steam, or vehicle exhaust comes down to matching detector performance to the environment. The best approach is proper detector placement, using detectors with appropriate sensitivity, and zoning or multi-criteria detectors. Correct placement means keeping detectors away from kitchens, cooking appliances, bathroom vents, and air paths that carry steam or exhaust, and installing them where drafts won’t repeatedly trigger them. Choosing the right sensitivity helps detectors respond to real smoke or heat while ignoring everyday plumes. Zoning divides the building into areas so nuisance signals can be contained, and multi-criteria detectors require more than one indicator (such as smoke and heat) before alarming, which reduces false alarms. This combination keeps the system protective without being prone to common nuisances. Increasing sensitivity would raise nuisance alarms, removing detectors eliminates protection, and relying on occupants to ignore signals is unsafe.