Carbon Monoxide

New Carbon Monoxide Alarm Detector Act

Effective January 1, 2007, Public Act 094-0741 requires the owner of a building that contains sleeping facilities to install and maintain a working carbon monoxide (CO) detector.  This includes single-family homes. Carbon monoxide detectors are not required in buildings that do not rely on fossil fuel for heat, ventilation, or hot water, and are not connected to an enclosed garage.

Building owners are required to install CO detectors units within 15 feet of every room used for sleeping purposes.  Building owners must provide and install the detectors and make sure that they are operational at the beginning of an initial lease.  Occupants are responsible for maintaining and testing these devices during the lease period.  Any problems with the detectors are to be brought to the attention of the building owner in writing.  The detectors must be battery powered, or electric with a battery back up.

Willful failure by the building owner to install or failure of the occupant to maintain the detector(s) in operating condition is a Class B criminal misdemeanor.  A second offense of failure to maintain by the occupant can result in prosecution for a Class 4 Felony.

If you have any questions regarding CO detectors, or any other safety concern, please contact the Fire Prevention Bureau at 630-910-2207.

Click here to read the full version of the Carbon Monoxide Alarm Detector Act.

Carbon monoxide (CO) is an odorless, colorless, deadly gas.  It can kill you before you know it because you can't see it, taste it or smell it.  At lower levels of exposure, it can cause health problems.  Some people may be more vulnerable to CO poisoning such as fetuses, infants, children, senior citizens and those with heart or lung problems.  When an individual breathes in CO, it accumulates in the blood and forms a toxic compound known as carboxyhemoglobin (COHb).  Hemoglobin carries oxygen in the bloodstream to cells and tissues.  Carbon monoxide attaches itself to hemoglobin and displaces the oxygen that the body organs need.

Carboxyhemoglobin can cause headaches, fatigue, nausea, dizzy spells, confusion and irritability.  Later stages of CO poisoning can cause vomiting, loss of consciousness and eventually brain damage or death.

Carbon monoxide is a by-product of combustion of fossil fuels.  Fumes from automobiles contain high levels of CO.  Appliances such as furnaces, space heaters, clothes dryers, ranges, ovens, water heaters, charcoal grills, fireplaces and wood burning stoves produce CO.  Carbon monoxide usually is vented to the outside if appliances function correctly and the home is vented properly. 

The Consumer Product Safety Commission and the Darien-Woodridge Fire Protection District recommend installing at least one carbon monoxide detector with an audible alarm near the bedrooms.  If a home has more than one story, a detector should be placed on each story.

Be sure the detector has a testing laboratory label.

The following is a checklist for where to look for problem sources of CO in the home:

1.      A forced air furnace is frequently the source of leaks and should be carefully inspected.

·         Measure the concentration of carbon monoxide in the flue gases.

·         Check furnace connections to flue pipes and venting systems to the outside of the home for signs of corrosion, rust gaps, or holes.

·         Check furnace filters and filtering systems for dirt and blockage.

·         Check forced air fans for proper installation and to assure correct airflow of flue gases.  Improper furnace blower installation can result in carbon monoxide build-up because toxic gas is blown into rather than out of the house.

·         Check the combustion chamber and internal heat exchanger for cracks, holes, metal fatigue or corrosion.  Be sure they are clean and free of debris.

·         Check burners and ignition system.  A flame that is mostly yellow in color in natural gas fired furnaces is often a sign that the fuel is not burning completely and higher levels of carbon monoxide are being released.  Oil furnaces with similar problems can give off an oily odor.  Remember you can't smell carbon monoxide.

2.      Check all venting systems to the outside including flues and chimneys for cracks, corrosion, holes, debris, blockages.  Animals and birds can build nests in chimneys preventing gases from escaping.

3.      Check all other appliances in the home that use flammable fuels such as natural gas, oil, propane, wood or kerosene.  Appliances include water heaters, clothes dryers, kitchen ranges, ovens or cook tops, wood-burning stoves, gas refrigerators.

·         Pilot lights can be a source of carbon monoxide because the by-products of combustion are released inside the home rather than vented outside.

·         Be sure space heaters are vented properly.  Un-vented space heaters that use a flammable fuel such as kerosene can release carbon monoxide into the home.

·         Barbecue grills should never be operated indoors under any circumstances nor should stovetops or ovens that operate on flammable fuels be used to heat a residence.

·         Check for closed, blocked or bent flues, soot and debris.

·         Check the clothes dryer vent opening outside the house for lint.

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