Feet apart or less then place one in the middle.
Carbon monoxide detector distance from furnace.
According to this advice plugging the unit into a typical outlet near the floor creates very little safeguard against carbon monoxide poisoning in your home.
In small homes where 20 foot distance is not possible place the alarm as far away from fuel burning sources as possible.
Avoid kitchens garages and furnace rooms.
Keep the area ventilated to prevent unwanted alarms.
Keep units at least 20 feet 6 meters away from common sources of combustion particles.
Keep at least 12 feet 3 7 m distance from the furnace or boiler if otherwise not specified in the user manual.
The main thing that you are trying to avoid here is false alarms.
You will need more than one detector.
If however they are more than 30 feet apart.
Detector within 10 feet of the internal door to your garage.
The detector may be placed on the ceiling.
Make sure you don t install any co detector too close to any appliance that generates heat.
How far should a carbon monoxide detector be placed from a furnace or boiler.
According to safety experts families are not safe when carbon monoxide units are mounted lower than seven inches from the ceiling.
Homes with attached garages.
How far should carbon monoxide detector be from furnace.
Because carbon monoxide is slightly lighter than air and also because it may be found with warm rising air detectors should be placed on a wall about 5 feet above the floor.