Best Smoke and Carbon Monoxide Detectors of 2025
CR's testers say these models from First Alert, Kidde, Siterwell, and Universal Instruments are great at protecting you and your loved ones from harm
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Installing reliable smoke and carbon monoxide detectors in your home can mean the difference between life and death.
About 60 percent of the deaths from fire occur in homes without working fire alarms, according to the National Fire Protection Association. And over 400 Americans die from accidental CO poisoning every year, according to the Centers for Disease Control and Prevention. However, while most detectors look similar and come certified by a testing organization, such as Underwriters Laboratory (UL) or Intertek Electrical Testing Labs (ETL), not all respond with the same speed and efficiency.
Why Are Smoke and Carbon Monoxide Detector Ratings Free?
CR is committed to safety. Ratings of lifesaving products like smoke and carbon monoxide detectors, car seats, and bike helmets are available to everyone.