FAQs for Replaceable Battery CO Detectors
Are battery-powered CO detectors better than hardwired CO detectors?
There are advantages to both systems. Battery-powered detectors are simple to install and can work during a power outage. However, when the battery wears out, it needs to be replaced. Hardwired CO detectors tie into your home’s wiring which will require professional installation, but generally, these detectors do not need to have the battery replaced unless they feature a backup battery.