CO Detectors are placed on the wall NOT ON THE CEILING
I made a statement that they should be placed lower because CO Is Heavier than Air
This depends on the density of the air in the room
Kidde ONE OF THE LARGEST MANUFACTURERS OF CO DETECTORS
suggests that they should be plugged into an outlet which is in most homes
However if children are in the home they can be placed higer
THEY ALSO SAY that they should not be placed in Kitchens or Furnace Rooms
IF YOU DON'T BELIEVE ME READ THEIR DOCUMENTATION
UNLESS A SMOKE DETECTOR ALSO INCLUDES A CO DETECTOR
THEN CO DETECTORS ARE PLACED AT EYE LEVEL OR BELOW THAT
One of the people that voted me down and doesn't have a clue
is even named Almost A Troll.... NO you are completely a troll
AND you and your buddies are likely to get people killed with your bad advise.
Smoke Rises that is why Smoke Detectors are on the ceiling
CO does not Rise.. ESPECIALLY IF ITS NOT FROM A FIRE
THAT IS WHY THE DETECTORS ARE PLUGGED INTO AN OUTLET
OR PLACED ON A WALL AND NOT THE CEILING
GO READ THE DOCUMENTS THAT COME WITH THEIR DEVICES