Make sure you don't have exterior furnace vents covered by snow! We've had record snow falls and more on the way. Fire departments are being called to homes where furnace vents have been plugged by snow, causing carbon monoxide to collect inside homes. A good carbon monoxide alarm will detect the gas and alert you. Read the Consumer's Guide to Massachusetts Requirements for Carbon Monoxide Alarms. Drifting snow can easily cover the vents on the side of any house. Make sure you check and remove any build up of snow. Additonally, power outages means the use of generators. A gas powered generator should be located outside and well-vented. Don't make the same mistake these folks did.