In order to ensure that your home has maximum protection, it’s important to have a CO detector on every floor. Five feet from the ground. Carbon monoxide detectors can get the best reading of your home’s air when they are placed five feet from the ground. Near every sleeping area.Click to see full answer. Thereof, do you put carbon monoxide detectors high or low?Some say detectors are more effective closer to the ground because they believe carbon monoxide is heavier than air; therefore, it concentrates low to the floor. Other experts recommend installing detectors high on the wall or on the ceiling because carbon monoxide is lighter than air and rises like smoke.Furthermore, should you put a carbon monoxide detector near your furnace? Ideally, you should have carbon monoxide detectors placed throughout your home, as you do smoke alarms. If your furnace is located in the basement, be sure to place a CO detector there, as well. Likewise, if you have a gas clothes dryer, put an alarm in the laundry room. In respect to this, where should a carbon monoxide detector be placed? Placement of a carbon monoxide detector Put a detector in every room that contains a fuel-burning appliance, or in a central location, such as a hallway or a landing. Make sure the alarm is situated at least one metre away from fuel-burning appliances, such as fires, boilers and cookers. How far should carbon monoxide detector be from boiler?Where to install your carbon monoxide detector. Fit your alarm high-up in the same room as the potential source of carbon monoxide, around 15cm from the ceiling and at least one metre away from boilers, cookers and fires.