All Wisconsin homes will be required to have carbon monoxide (CO) detectors starting February 1, 2011. The requirement was passed last year based on findings by the American Medical Association that CO poisoning is the leading cause of accidental poisoning in the United States.
While new homes built after the rule goes into effect will require more sophisticated systems, existing homes may use battery-powered, stand-alone alarms. The alarms may be purchased at most home-improvement or hardware stores and can be found online. The units must be installed in the basement and on each floor level except the attic or garage. The law applies to all dwellings that contain CO sources, which includes most Wisconsin homes. Examples of CO sources include heaters, fireplaces, furnaces, appliances, vehicles left running in enclosed spaces, or cooking sources using coal, wood, or petroleum products.
Click on the link above to see the full rules.