Step 1: Install and Maintain
Smoke/CO Alarms
Install and maintain smoke and carbon monoxide (CO) alarms outside each separate sleeping area and on every level of the home, including the basement.
Modern detectors can be placed on the ceiling or wall. Refer to the device instructions when installing.
Test detectors monthly by pressing the test button. Working alarms save lives!
Check the manufacture date on the back of the device. Replace devices and batteries according to manufacturer instructions.

Step 2: Ensure Proper Ventilation
Never use an oven or stovetop to heat your home.
Always run generators outdoors in a well-ventilated space, at least 20ft from any building or opening.
Ensure proper ventilation for all fuel-burning appliances, including fireplaces, water heaters, furnaces, and dryers.
Keep vents and chimneys clear of debris and check for any gaps, leaks, or rust.
Never leave the car running in the garage.
Always use barbecue grills outside, away from all doors, windows, vents, and any building openings.

Step 3: Regular Professional Inspections
Have furnaces, water heaters, fireplaces, and other fuel-burning equipment appliances inspected by a qualified professional annually. This includes checking the heat exchanger for cracks and ensuring the burner area is clean.
Have converted equipment (e.g., from one fuel type to another) checked by a qualified technician after the conversion.

Step 4: If Your Alarm Goes Off
Do not ignore the alarm. Assume it indicates unsafe levels of carbon monoxide.
Evacuate immediately. All people and pets should quickly get outside to fresh air. Leave windows and doors as-is to help fire departments use their meters to locate the CO source.

Call 911. Report the incident and any symptoms of CO poisoning (headache, confusion, dizziness, nausea, etc.)
Do not re-enter the building until the fire department has cleared it as safe. Even if the alarm stops, the source may still be producing carbon monoxide.
~ Fire Chief Michael Gamache