Smoke detectors and carbon monoxide detectors are two of the most important safety devices in your home and two of the most neglected. Most people install them once and forget until the battery chirps. This guide covers exactly where to place them, how often to test them, and when to replace them entirely.
Why Both Detectors Are Non-Negotiable
Smoke detectors sense particles from fire. Carbon monoxide detectors sense CO, a colorless, odorless gas produced by burning fuel that can kill within hours. You cannot see or smell carbon monoxide. Many deaths from house fires happen due to smoke inhalation, not flames. Both hazards are silent killers that require their own dedicated device.
Where to Place Smoke Detectors
Place smoke detectors inside every bedroom, outside every sleeping area in the hallway, on every level of the home including the basement, and at the top of every stairway. Mount them on the ceiling or high on a wall between 4 and 12 inches from the ceiling. Keep them away from kitchens where cooking smoke causes false alarms.
Where to Place Carbon Monoxide Detectors
Place CO detectors within 10 feet of every sleeping area, on every level of your home, near fuel-burning appliances like your furnace and water heater, and in areas adjacent to an attached garage. CO is approximately the same weight as air so it does not simply rise or settle to the floor.
How Often to Test
Test every detector in your home once a month. Press and hold the test button until the alarm sounds. If it does not sound, replace the battery or the unit. Put a monthly reminder in your phone. It takes two minutes and can save your life.
When to Replace Batteries vs. the Entire Unit
Replace batteries at minimum once a year. Replace the entire smoke detector unit every 10 years and CO detectors every 5 to 7 years. Also replace any unit that chirps after a fresh battery or fails a test.
What to Do When the Alarm Sounds
Smoke alarm: get everyone out immediately, close doors behind you, call 911 from outside. CO alarm: leave the home, leave doors open as you exit, call 911, do not return until emergency services clear the home. Never assume an alarm is a false trigger.
HerHaven Installs and Replaces Detectors Across Kansas City
Not sure what you have or whether your detectors are in the right places? HerHaven Home Services can do a full walkthrough and get everything updated. Call (913) 600-1187 or visit herhavenhomeservices.com.