Ontario’s new Carbon Monoxide detector regulation takes effect today. All homes with a fuel-fired heating system or appliance, fireplace or attached garage must now have the CO detectors installed near all sleeping areas in residential homes. They must also be installed in the service rooms and adjacent sleeping areas in multi-residential units. The only homes not affected by the new regulation are those that are all electric and have no attached garages. Fire departments will enforce the new regulation along with smoke detector enforcement efforts. Penalties for no CO detectors are the same as for not having a smoke detector. Fines begin at $235, but could be up to $50,000 for individuals and $100,000 for companies. Carbon monoxide alarms can be hardwired, battery-operated or plugged into the wall.