As a safety expert with extensive knowledge in home security systems, I'd like to address the question regarding the installation of carbon monoxide detectors. Carbon monoxide, or CO, is a colorless, odorless gas that can be lethal in high concentrations. It is produced by the incomplete combustion of fuels, such as gas, oil, coal, and wood. Due to its potential to cause serious health risks, it is crucial to have working CO detectors in your home.

The placement of carbon monoxide detectors is a critical factor in their effectiveness. CO is slightly lighter than air, which means it tends to rise and disperse in the air. This property is important to consider when deciding where to install these detectors.

Many people have been misled by the myth that CO is heavier than air and should therefore be detected at lower levels. However, this is not accurate. The density of CO is indeed slightly less than that of air, and it will generally rise as it moves through the air. Therefore, placing CO detectors on the ceiling or high up on a wall is generally more effective. This positioning allows the detectors to be in the path of the rising CO gas, increasing the chances of early detection.

It is also important to note that CO detectors should not be installed too close to the source of potential CO production, such as a furnace or a stove, as this could lead to false alarms or early saturation of the detector, rendering it less effective over time. Instead, they should be placed strategically throughout the home, ideally on every level and in areas close to bedrooms, living spaces, and other frequently occupied rooms.

Furthermore, it is recommended to have multiple detectors to ensure coverage. Detectors should be interconnected, so if one detector goes off, all of them will sound an alarm, alerting everyone in the home to the potential danger.

In conclusion, while CO is slightly lighter than air, it is not so light that it will immediately rise to the ceiling and remain there. It will rise and spread throughout the room, but placing detectors higher up increases the likelihood of early detection. Always follow the manufacturer's guidelines for installation and maintenance to ensure the safety of your home.

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Carbon monoxide (CO) is slightly lighter than air, so carbon monoxide alarms are effective when placed on the ceiling or high up on a wall. ... There's a myth that carbon monoxide alarms should be installed lower on the wall because carbon monoxide is heavier than air.May 30, 2017read more >>