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The greatest & easiest way to prevent tragedy in your home due to a fire is to have working smoke alarms/detectors.  Smoke alarms provide an early warning of fire, giving you and your family more time to safely evacuate your home.

Image: Smoke AlarmOften, home fires occur in the darkness of night when residents are fast asleep.  One misconception is that a person will awake from the smell of smoke.  This is WRONG...Smoke is a silent killer!  Smoke contains many deadly gases, such as carbon monoxide, that will actually put a person into an even deeper state of sleep, causing a person never to wake up.  A smoke alarms/detector is your first line of defense to get out alive.

A smoke alarm must be WORKING to be effective.  Over the past decade, the number of residential homes having installed smoke alarms has steadily increased; however, a large percentage of these smoke alarms don't work.  Why?...the batteries have either died or been removed.  Smoke alarm batteries should be tested monthly and replaced at least once a year.

To learn more about smoke alarms/detectors click on any of the subjects below:

Choosing a smoke alarm/detector

Smoke alarms can be purchased at the majority of hardware and variety department stores.  Be sure that the alarms you buy carry the label of an independent testing laboratory.

In general, smoke alarms are either battery operated or are hooked up directly to your homes electrical system with a battery backup.  Either type is effective as long as they are installed and maintained properly (follow the manufacturer's directions).

Some smoke alarms detect smoke using an ionization sensor while others use a photoelectric sensor.  Again, both types are effective as long as they are installed and maintained properly (follow the manufacturer's directions).

Specialty alarms with emergency lights also exist for the hearing impaired.

How many and where to install?

The total number of smoke alarms and where they are installed depends on the home.  Follow these guidelines for determining the number of smoke alarms and where to install them.

  1. Have at least one smoke alarm installed on every floor of your home, including the basement.

  2. Have a smoke alarm installed outside of each sleeping area.

  3. If any residents sleep with their doors closed, making it difficult to hear the alarm, or if residents are hearing-impaired, it is recommended that smoke alarms be installed in the inside the sleeping areas, as well.

  4. On floors without bedrooms, alarms should be installed in or near living areas, such as dens, living rooms, or family rooms.

  5. Smoke alarms are not recommended for kitchens, bathrooms, or garages where cooking fumes, steam, or exhaust fumes could result in false alarms.  Also, do not install an alarm in an attic or other unheated spaces where humidity and temperature changes could affect the alarm's operation.

  6. If your alarm continues to go off due to normal cooking in the kitchen, do not remove the battery.  Physically move and reinstall the smoke alarm in a location where the alarm will not continually go off while you are cooking.

  7. Install smoke alarms following the manufacturer's directions.  Most battery operated smoke alarms can be easily installed using a drill, screws, and screwdriver.  Alarms hard-wired to the homes electrical system should be installed by a professional.  Never install an alarm to a circuit that can be turned off from a wall switch.

  8. Mount alarms high on a wall or on the ceiling.  Avoid dead air spaces.  Wall-mounted alarms should be installed so that they are 4 to 12 inches from the ceiling.  A ceiling-mounted alarm should be attached at least 4 inches from the nearest wall. 

Maintenance & batteries

  1. Only a functioning smoke alarm can protect you and your family.
  2. Never disable an alarm by "borrowing" its battery for another use.
  3. Test your smoke alarms monthly
  4. Following the manufacturer's instructions, install new batteries at least once a year.
  5. Replace batteries when your alarm is "chirping" or "beeping", indicating a low battery.
  6. Clean your smoke alarms using a dust brush or rag.
  7. Never paint a smoke alarm.
  8. Replace smoke alarms that are more than 10 years old.

Image: Change Your Clocks...Change Your Batteries

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City of Madison Fire Department

325 W Johnson St, Madison WI  53703 

608.266.4420 (Phone) / 608.267.1153 (Fax)

email: fire@cityofmadison.com

Last Modified 9/24/2008