Use combustion heaters with caution

Portable heating equipment can be deadly when used improperly.

According to the National Fire Protection Association, about 40 percent of fires related to home heating involved a space heater. Of deaths related to home heating, 84 percent were related to a space heater.

Combustion heaters that burn kerosene or propane require the most care to use properly.

Kerosene heaters and other combustion heaters produce carbon monoxide, an invisible but deadly gas. Combustion heaters must be vented to the outside to prevent carbon monoxide poisoning. If the heater is not vented, it's important to make sure there is a source of fresh air. Keep a window open about an inch when using an unvented heater. Keep the wicks clean and make sure the fuel is clean.

All heaters must be at least 36 inches away from anything that can burn. Never leave them on when you are not in the room, or when you go to sleep. Never dry clothing on a heater.

Most modern kerosene and propane heaters have switches that turn off the device when it is tipped. But, it is essential that the heaters not be left on when there is no one at home or while everyone is sleeping. The devices must be monitored. Children and pets should always be kept away from the device, which will be hot.

Fireplaces: Have the chimney inspected prior to the start of the heating season and cleaned if necessary. Creosote builds up in chimneys and causes chimney fires. Always use a sturdy screen when burning. Remember to burn only wood. (Never burn paper or pine boughs.) And never use flammable liquids in a fireplace.

Wood stoves: Be sure the stove meets local fire codes and is properly installed and maintained. Chimney connections should be inspected at the beginning of each heating season. Follow the same safety rules for wood stoves as for space heaters. Burn only wood, and be sure the stove has approved stove board below it and behind it to protect floors and walls.