Kidde Carbon Monoxide Detector Alarm vs First Alert CO511 2010

The Kidde Carbon Monoxide Detector Alarm is a great CO Alarm for its $17 asking price.

The First Alert CO511 (2010), however, while a reasonable product for $42, doesn't stack up against its competitors quite as well. If you're considering CO Alarms in the $35 range, you might want to check out some better options.

The Kidde Carbon Monoxide Detector Alarm was loved by reviewers at The Spruce, a trustworthy source that performs objective hands-on testing. It did great in their "The 11 Best Carbon Monoxide Alarms of 2023" roundup - in fact, they named it their "Best Compact". That, by itself, points toward it being a noteworthy CO Alarm.

As for the First Alert CO511 (2010) - it impressed reviewers at Popular Mechanics, a trustworthy source that conducts solid hands-on testing. It did great in its "The 11 Best Carbon Monoxide Detectors to Protect You and Your Family" roundup - in fact, it earned its "Best Battery-Powered" title, which, on its own, indicates a certain level of quality.

As a last step, we wanted to do a head-to-head Kidde Carbon Monoxide Detector Alarm vs. First Alert CO511 (2010) comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.