| http://www.w3.org/ns/prov#value | - Carbon monoxide detectors are affected by excessive humidity and by close proximity to gas stoves (source: City of New York); near, but not directly above, combustion appliances, such as furnaces, water heaters, and fireplaces, and in the garage (source: UL); and on the ceiling in the same room as permanently installed fuel-burning appliances, and centrally located on every habitable level, and in
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