11
7. Recommended Locations For Smoke And Carbon Monoxide Alarms
• Locate smoke alarms in all sleeping areas. Try to monitor the exit path as the bedrooms are usually
farthest from the exit. If more than one sleeping area exists, locate additional alarms in each
sleeping area.
• Locate additional alarms in stairways, because stairways act like chimneys for smoke and heat.
• Locate at least one alarm on every floor level.
• Locate an alarm in every bedroom.
• Locate an alarm in every room where electrical appliances are operated (i.e. portable heaters or
humidifiers).
• Locate an alarm in every room where someone sleeps with the door closed. The closed door may
prevent an alarm not located in that room from waking the sleeper.
• Smoke, heat, and combustion products rise to the ceiling and spread horizontally. Mounting the
smoke alarm on the ceiling in the center of the room places it closest to all points in the room.
Ceiling mounting is preferred in ordinary residential construction.
Figure 7-A
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
CEILING
Note: measurements shown
are to the closest edge
of the alarm.
12’’
(30.5 cm)
MAXIMUM
SIDE
WALL
12”
(30.5 cm)
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
Smoke Alarms for Required Detection
BEDROOM
BEDROOM
LIVING
ROOM
BASEMENT
BEDROOM
HALL
LIVING ROOM
BEDROOM
KITCHEN
KITCHEN
BEDROOM
BEDROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
NOT
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
ANYWHERE
IN THIS AREA
Smoke Alarms for Additional Detection
3’
(0.9 m)
3’
(0.9 m)
3’
(0.9 m)
ACCEPTABLE
TOP OF ALARM
ACCEPTABLE HERE
CEILING
Note: measurements shown
are to the closest edge
of the alarm.
12’’
(30.5 cm)
MAXIMUM
SIDE
WALL
12”
(30.5 cm)
4”
(102 mm)
4”
(102 mm)
ANYWHERE ALONG
THIS BOLD SURFACE
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
Not within 6 feet of appliances
Smoke Alarms for Required Detection
BEDROOM
BEDROOM
LIVING
ROOM
BASEMENT
BEDROOM
HALL
LIVING ROOM
BEDROOM
KITCHEN
KITCHEN
BEDROOM
BEDROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
NOT
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
ANYWHERE
IN THIS AREA
Smoke Alarms for Additional Detection
3’
(0.9 m)
3’
(0.9 m)
3’
(0.9 m)