Home Safety 101 Skip to Videos All | Chimneys & Woodstoves | Carbon Monoxide | Smoke Detectors | Dryer Vents | Smoke Detectors, • 2/21/22 How Often Should I Replace My Smoke Detectors? Most manufacturers recommend replacing detectors when they are 10 years old. Smoke Detectors, • 2/21/22 Where should I put my smoke detectors? A good brief rundown of where smoke detectors should be installed in your home.