How High to Hang a Carbon Monoxide Alarm

Carbon Monoxide Buildup

• Carbon monoxide occurs when incomplete combustion of fuel occurs in appliances such as a furnace, water heater or kitchen stove. The gas is undetectable by human senses although it is dangerous and considered toxic. Carbon monoxide mixes with air and spreads throughout the home and will be found in equal concentrations throughout the home.

Alarm Location

• People exposed to carbon monoxide will exhibit symptoms similar to the flu. People who are awake will notice the symptoms and can take precautions, such as opening windows and doors or going outdoors for fresh air. The greatest risk exists for sleeping people. The U.S. Consumer Product Safety Commission recommends carbon monoxide alarms be installed in the hallway near bedrooms and away from heat vents. The gas will not be more concentrated in that area, but the proximity of the alarm should wake sleeping family members if carbon monoxide is detected.

Alarm Height

• The best height for a carbon monoxide detector is about knee high, according to the Fire Marshal's Public Fire Safety Council of Canada. This also places the device at roughly the height of a person sleeping on a bed. In the presence of pets or children who may inadvertently damage the detector, it can be placed at chest height. Install the alarm where the flow of air is not shielded by doors or drapes. Always follow manufacturer's instructions to insure proper installation.

What to Do

• When the alarm sounds, take action. It may be a false alarm but establish that after you have taken precautions. If the alarm is accompanied by the smell of natural gas or fuel, vacate the home immediately and call the utility company. If the alarm sounds without a gas odor, check for symptoms. If no family member reports headaches or nausea, open doors and windows and contact the local fire department for more complete testing. Otherwise contact emergency medical services.