On September 15, 1993, Chicago, Illinois became one of the 1st cities in the nation to adopt an ordinance requiring the installation of Carbon Monoxide (CO) detectors that bear the mark of a nationally-recognized testing laboratory in all new single-family homes and in existing single-family residences that are being equipped with new oil or gas combustion furnaces.
Kingston, New York has approved a code to require the installation of CO detectors in multiple dwellings with 4 or more dwelling units.
Bel Air, Texas requires CO detectors in some single-family dwellings.
The Recreational Vehicle Industry Association (RVIA) requires CO detectors in motor homes made after September 1, 1993. RVIA requires CO detectors in all recreational vehicles that are motorized and in towable recreational vehicles that have a generator or are prepped for a generator. RVIA's membership includes approximately 90% of all U.S. recreational vehicle manufacturers.