Officials from the City of Calgary and Province of Alberta are reminding residents to install and regularly test carbon monoxide detectors as the chief way to protect themselves from the deadly gas.

From November 1 to 7, 2015, authorities are sharing tips and information on the dangers of carbon monoxide gas and the importance of installing proper alarms as part of Carbon Monoxide Awareness Week.

Carbon monoxide is referred to as a ‘silent killer’ because it’s odourless, colourless, and very toxic.

The gas is produced by incomplete combustion of a fuel consumed by appliances such as your furnace when it is not properly maintained or properly ventilated.

It can also be emitted by vehicles when they are left running in an attached garage. Authorities add that CO can build up to dangerous levels even if the door is open.

Officials say it is very important to have a functioning alarm. “By installing a carbon monoxide alarm and testing it regularly, we can all take a simple but important step in keeping our homes safe. This reminder during Carbon Monoxide Awareness Week could help save your life or the life of someone you love," said Danielle Larivee, Minister of Municipal Affairs.

Fire officials in Calgary say detectors are the only way your family can be warned about the dangers of gas build-up. “If your carbon monoxide detector goes off, call 911 and leave your house until the Fire Department lets you know it is safe to go back in,” said Steven Dongworth, Calgary Fire Chief.

ATCO says they are called to over 3,000 carbon monoxide related calls every year.

In order to best protect yourself, you’re asked to:

  • Test alarms once a month
  • Replace batteries once a year, if needed
  • Vacuum alarms on a regular basis
  • Replace alarms ever seven to ten years, according to instructions

Early symptoms of carbon monoxide include headaches, dizziness, and nausea. As the gas builds up in your blood, however, the symptoms can progress to confusion and drowsiness, rapid breathing, vision problems, and seizures.

Prolonged exposure can cause unconsciousness and then death.