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Home Safety
Carbon
Monoxide .pdf
version
Should You Be
Concerned?
You can't see, taste, feel, or smell carbon
monoxide (CO). However, this deadly gas can make you very sick or even kill
you. Over 5,000 people in the United States die every year after breathing too
much CO. The signs of CO poisoning seem like the flu. Many people don't even
know they've been breathing in CO. People who survive can suffer brain damage,
lose their sight or hearing, or have heart problems. It is a major threat to
your family's health. The good news is that you can prevent CO poisoning. This
section will help you ask the right questions to find out if the air in your
home is safe and healthy.
There can be so much CO in a burning building
that breathing smoke for as little as one minute can kill you. Lower levels,
such as from smoking, do not kill right away. They can cause many other health
problems though. Children, unborn babies, people with asthma, older adults, or
people with heart or lung problems are more likely to get hurt from breathing
CO. But remember, CO harms even healthy people.
Where Does CO Come
From?
Fuel-burning appliances use gas, oil, or wood
to produce heat. If they are not working right, they can make CO. Most gas
appliances that have been put in and taken care of properly are safe and make
very little CO. Electric appliances do not burn fuel and so make no CO. Common
sources of CO include:
- Gas and oil furnaces, boilers, and water
heaters
- Wood-burning fireplaces and stoves
- Gas appliances like ovens, stoves, or
dryers
- Gas and kerosene space heaters
- Gas and charcoal grills
- Cars, trucks, campers, tractors, and other
vehicles
- Gasoline and liquid propane (LP)-powered
small equipment, including lawn mowers, snow blowers, chainsaws, pressure
washers, and electric generators
- Recreational vehicles, including boat
motors, all terrain vehicles (ATVs), ski-boats, and generators in campers and
houseboats o Tobacco smoke
- House fires
- Blocked chimneys and flues
Breathing in low levels of CO can hurt your
brain, heart, or other parts of your body. At high levels, the brain is so
short of oxygen that you cannot think clearly. You lose control of your muscles
and may be unable to move to safety. High-level CO poisoning can cause loss of
consciousness, coma, and death.
There are simple but important steps to take to
find out if your family is at risk for CO poisoning. The questions on the
following page will help you do that. This section
will give you ideas of what to do to keep the air in your home safe to breathe.
What are the Signs
of CO Poisoning?
People often think CO poisoning is the flu.
That's because it can feel like the flu. Signs of low-level CO poisoning may
include:
- Headache
- Nausea
- Vomiting
- Dizziness
- Confusion
- Tiredness
- Weakness
- Sleepiness
- Tightness in the chest
- Trouble breathing
CO and
Smoking
If you smoke, you breathe in carbon
monoxide and many other chemicals. If you smoke indoors, people around you also
breathe the smoke (called second-hand or environmental tobacco smoke). Smoking
can make minor health problems worse and cause major diseases like cancer and
heart disease. If you need help quitting, contact the American Lung Association
at 1-800-LUNG-USA. |
Questions to ask?
- Do you sometimes use charcoal grills or
small gasoline engines inside your home, garage, or closed-in porch?
- Do you have an attached garage?
- Do you sometimes warm up your car inside
the garage?
- Has it been more than one year since you or
your landlord had your furnace, fireplace, wood stove, or chimney inspected or
cleaned?
- Do you ever use a gas or kerosene space
heater or a vent-free gas fireplace?
- Does your home have a carbon monoxide
alarm?
- Do you ever use the kitchen stove or oven
to heat your home?
- Do you sometimes forget to turn on the
kitchen exhaust fan when using the oven?
- Do some of the burners on the kitchen stove
burn yellow or orange? *
- Does smoke from the fireplace sometimes
come back into the room?
- Are your appliances and furnace in good
shape?
- Are the vent pipes for your furnace,
boiler, heater rusty or falling apart? *
- Do you have a gas water heater that does
not have a vent? *
- Is there rust, soot, or dirt on your
furnace, boiler, or water heater? *
- Is your furnace or boiler over ten years
old? *
- Have you weather-stripped doors and windows
or insulated your home? *
- Have you closed off vent or combustion air
openings? *
Safety Checklist
If you answered yes to any of the starred
questions pay special attention to this checklist. Remember, putting in and
taking care of heating appliances like stoves and furnaces can be dangerous.
Only trained and qualified workers should do this.
- Turn off an appliance or heater that
starts making different noises, smells funny, starts sooting, has a
differentlooking flame, or does not seem to be working right. Call a heating
contractor for repairs.
- Read and follow the instructions that
came with your appliance or unvented gas heater.
- Provide good ventilation for all
heating appliances.
- Keep all wood, paper, cloth, and
furniture away from heating appliances.
- Don't block an appliance's air
openings.
- Have all appliances checked every
year by a qualified heating contractor.
- Ask the contractor to check for
carbon monoxide and look at the vent (chimney) system.
- If you insulate and weather-strip
your home, call a heating contractor to make sure there is still enough
ventilation.
- If you smell gas or if the smoke
detector or the carbon monoxide alarm goes off, leave the building right away
and call 9-1-1.
|
Actions Steps
- Never use charcoal grills or run
engines inside your home, garage, or basement even for a short time. Charcoal
grills and small gasoline engines make a lot of carbon monoxide. Even opening
all the windows and doors will not give you enough fresh air to prevent CO
poisoning.
- Never warm up a vehicle inside the
garage. Warming up your car, truck, or motorcycle on a cold day for just a
couple of minutes (even with the garage door open) can make enough CO to make
you sick. Start lawnmowers, snow blowers, and other yard equipment outdoors.
- Have a heating contractor check your
furnace, chimneys, and other sources of CO every fall to make sure everything
is okay. (You can find one in the telephone book.) Make sure they use a tool
that measures CO. To get harmful gases out of a home, many heating appliances
have chimneys. (Chimneys on gas appliances are called vents). The chimney
carries CO and other gases from the appliance outdoors. If your appliances and
vents are working right there should be little CO. If you rent, ask your
landlord to have the heating system checked.
- Make sure chimneys are in good shape -
clean and working right. Have your chimney, wood-burning fireplace, or wood
stove swept every year. Burning wood nearly always makes a lot of CO. It is
very important that all the smoke goes out the chimney.
- If you use unvented kerosene or gas heaters
OR a vent-free gas fireplace, follow instructions carefully and open a window
for fresh air. Do not use them while sleeping.
- Put carbon monoxide alarms near each
sleeping area and on each floor of your home. (Older models are called carbon
monoxide detectors.) You can find them at your local hardware, discount,
outlet, or building supply store for $20 to $50.
- Never use the kitchen stove or oven to heat
your home.
- Always turn on the kitchen exhaust fan when
using the oven.
- Have the kitchen stove fixed before using
it if the flames burn orange or yellow.
- Don't use a smoking fireplace until you fix
the problem.
Carbon Monoxide
Alarms
Carbon monoxide (CO) alarms will help protect
you and your family from sickness or death. A good alarm will make a loud noise
when CO levels become too high. There are plug-in and battery operated alarms.
Look on the package to make sure the alarm is okayed by a qualified testing
laboratory, such as Underwriters Laboratory (UL). Check the batteries on a
battery-operated alarm every six months. Every home should have at least one
alarm. It's best to put one near each sleeping area and on each level of the
home. Carbon monoxide alarms do not take the place of checking and taking good
care of your home's furnace, fireplace, or space heaters.
If someone in your family shows signs of CO
poisoning or if a CO alarm goes off:
- Get outside right away.
- Call 9-1-1 or your local emergency number
from a phone outside your home.
- See a doctor or nurse right away. See a
doctor or nurse even if you feel better after breathing fresh air. They can
check your blood and breath for CO and tell if you need more medical care.
- Treat all alarm soundings as an emergency.
Never ignore an alarm sounding!
- Have your home checked out by a qualified
heating contractor. You can find one in the telephone book.
- Don't go back home until all problems have
been fixed.
When in Doubt,
Check It Out
Your local county Extension
Office -look in your telephone book
Your local or state health department
-look in your telephone book
Iowa State University Cooperative Extension
http://www.extension.iastate.edu/Pages/communications/CO/
The Consumer Products Safety
Commission (800) 638-2772
http://www.cpsc.gov/cpscpub/pubs/466.html
The American Lung Association (800) LUNG-USA
http://www.lungusa.org/air/carbon_factsheet99.html
Healthy Indoor Air for America's Homes
(406) 994-3451 http://www.montana.edu/wwwcxair/
Next Chapter: Lead >>
This chapter was written by Thomas
Greiner, Iowa State University Cooperative Extension. ©2002 University of
Wisconsin Extension. All Rights Reserved. |