Common myths about automatic sprinklers include that all sprinklers activate at once, but in reality only the sprinklers closest to the fire activate when heat reaches the rated temperature. Another myth is that sprinklers cause more damage than fire—fact: a sprinkler’s water flow is far less than fire hoses, and early control usually means less overall water and smoke damage. Some people think sprinklers are set off by smoke, but they are heat-activated, not smoke-activated. Another misconception is that sprinklers frequently malfunction; in truth, they are highly reliable when properly maintained.

A major fact is that sprinkler systems can control or extinguish most fires in their early stages, buying time for occupants to escape and reducing flashover risk. Overall, sprinklers are one of the most effective life safety tools for reducing fire deaths, injuries, and property loss.