How often should fire alarm systems be tested according to NFPA standards?

Testing fire alarm systems according to NFPA (National Fire Protection Association) standards is critical to ensuring their reliability and effectiveness in an emergency. The recommended frequency for testing fire alarm systems is annually. This annual testing requirement ensures that all components of the fire alarm system, such as detectors, alarms, and notification devices, are functioning correctly and can operate as intended during an emergency situation.

Annual testing helps identify any maintenance issues, updates required for compliance with the latest safety standards, or equipment that may need replacement. Regular testing is not just a best practice but also a regulatory requirement under NFPA 72, which governs the installation, maintenance, and testing of fire alarm systems.

The other options indicate more frequent testing, which, while beneficial in certain situations, is not specified as a standard requirement by the NFPA for general fire alarm systems. Therefore, the annual requirement is both a guideline for safety and a means of ensuring compliance with fire safety regulations.