Carbon monoxide (CO) detector needed
A carbon monoxide (CO) detector is not present in a required location.
CommonFix nowSafetyCarbon monoxide detectors
Why it matters
You can't see or smell carbon monoxide. The CPSC recommends CO detectors on every floor and outside sleeping areas. Follow the maker's instructions for mounting height.
How common is it?
Found in 31% of the homes HomeCloud evaluated, Sep 2025 to Oct 2026.
Counted by the finding's name on HomeCloud reports, so the true number can be a little higher.
How soon to fix it
HomeCloud reports list this as a fix-now item.
More safety resources
Where to put smoke and carbon monoxide detectorsWhich rooms and floors need smoke and CO alarms, spots to avoid, battery vs hardwired vs combination alarms, and when to replace them.Radon test results explainedWhat pCi/L means, short vs long-term tests, the 2.0 and 4.0 levels, why results vary, and what to do with a high result when buying a home.