<P> In New York State, "Amanda's Law" (A6093A / C. 367) requires one - and two - family residences which have fuel burning appliances to have at least one carbon monoxide alarm installed on the lowest story having a sleeping area, effective since February 22, 2010 . Although homes built before Jan. 1, 2008 are allowed to have battery - powered alarms, homes built after that date need to have hard - wired alarms . In addition, New York State contractors have to install a carbon monoxide detector when replacing a fuel burning water heater or furnace if the home is without an alarm . The law is named for Amanda Hansen, a teenager who died from carbon monoxide poisoning from a defective boiler while at a sleepover at a friend's house . </P> <P> Alaska House Bill 351 requires a carbon monoxide detector be installed in dwelling units that contain or are serviced by a carbon based fuel appliance or other device that produces by products of combustion . </P> <P> In July 2011, California required installation of carbon monoxide detectors in existing single - family homes, with multifamily homes following in 2013 . CA Law 2015 require all new installation of smoke and CO alarms to be 10 year non serviceable type . Existing alarms may not need to be replaced for home owners, see local codes . Required alarm location also vary per local enforcing agencies . </P> <Dl> <Dt> North America </Dt> </Dl>

When were carbon monoxide detectors required in california
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