To prevent CO production in your home, ensure that your furnace, water heater, and other fuel-burning appliances are properly installed, maintained, and vented. Have your furnace inspected annually by a qualified HVAC technician, and never use generators or grills indoors. Additionally, install CO detectors on every level of your home and near sleeping areas. These detectors can alert you to potential CO buildup, allowing you to take prompt action to ensure your safety.