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cause CO. Vehicles and other combustion engines running
in an attached garage and using a charcoal/gas grill or
hibachi in an enclosed area are all possible sources of CO.
The following conditions can result in transient CO situations:
Excessive spillage or reverse venting of fuel-burning appli-
ances caused by outdoor ambient conditions such as: Wind
direction and/or velocity, including high gusts of wind, heavy
air in the vent pipes (cold/humid air with extended periods
between cycles), negative pressure differential resulting from
the use of exhaust fans, simultaneous operation of several
fuel-burning appliances competing for limited internal air,
vent pipe connections vibrating loose from clothes dryers,
furnaces, or water heaters, obstructions in, or unconvention-
al, vent pipe designs which can amplify the above situations,
extended operation of unvented fuel-burning devices (range,
oven, fireplace, etc.), temperature inversions which can trap
exhaust gasses near the ground, car idling in an open or
closed attached garage, or near a home.
CO Safety Tips
Every year have the heating system, vents, chimney and flue
inspected and cleaned by a qualified technician. Always
install appliances according to manufacturer’s instructions
and adhere to local building codes. Most appliances should
be installed by professionals and inspected after installation.
Regularly examine vents and chimneys for improper connec-
tions, visible rust, or stains, and check for cracks in furnace
heat exchangers. Verify the color of flame on pilot lights
and burners is blue. A yellow or orange flame is a sign that
the fuel is not burning completely. Teach all household
members what the alarm sounds like and how to respond.
Symptoms of CO Poisoning
Initial carbon monoxide poisoning symptoms are similar to
the flu with no fever and can include dizziness, severe
headaches, nausea, vomiting and disorientation. Everyone is
susceptible but experts agree that unborn babies, pregnant
women, senior citizens and people with heart or respiratory
problems are especially vulnerable. If symptoms of carbon
monoxide poisoning are experienced seek medical attention
Carbon Monoxide Safety Information