Smoke & CO Alarms
Your First Line of Defense Against Fire and Carbon Monoxide
Early Warning Saves Lives
Working smoke and carbon monoxide alarms cut your risk of dying in a home fire in half. They provide the precious seconds you need to escape safely.
Smoke Alarms
Where to Install Smoke Alarms
Install smoke alarms in every bedroom, outside each sleeping area, and on every level of your home (including basement).
Inside Each Bedroom
Smoke alarms must be inside every room where people sleep. Closed doors can prevent you from hearing alarms in other rooms.
Outside Sleeping Areas
Install alarms in hallways outside bedrooms and sleeping areas to provide early warning.
Every Level
Install at least one alarm on every floor, including basement and attic spaces that are used.
Additional Locations
- Top of stairways
- Living rooms
- Near furnace rooms
- Large homes may need more
Basement & Attic
- Bottom of stairs to upper levels
- Near laundry or utility areas
- In finished attic spaces
- Near electrical panels
Multi-Story Homes
- At least one per floor minimum
- Top and bottom of every staircase
- In attached garage entryway
- Interconnect all alarms if possible
Ceiling Mount (Preferred)
- Mount in center of ceiling
- At least 4 inches from wall
- Best position for smoke detection
- Smoke rises — ceiling catches it first
Wall Mount (If Necessary)
- 4-12 inches below ceiling
- Never in corners (dead air space)
- Follow manufacturer instructions
- Acceptable when ceiling mount not possible
Where NOT to Install
- Within 10 feet of cooking appliances
- In bathrooms (steam causes false alarms)
- Near windows, doors, or ducts
- In unheated or high-humidity areas
Types of Smoke Alarms
Ionization Alarms
- Best for: Fast-flaming fires
- Quick response to flames
- Most common type
- Less expensive
Photoelectric Alarms
- Best for: Smoldering fires
- Earlier warning for slow fires
- Fewer false alarms near kitchens
- Recommended for near cooking areas
Dual-Sensor Alarms (Recommended)
- Best protection – combines both types
- Detects all fire types
- NFPA recommendation
- Slightly more expensive
Interconnected Alarms (Highly Recommended): When one alarm sounds, they all sound. Provides earliest warning throughout your home. Can be hardwired or wireless.
Testing & Maintenance
Monthly
TEST YOUR ALARMS
- Press and hold test button
- Should emit loud beep
- Test all alarms in home
- If no sound, replace battery or unit
Annually
REPLACE BATTERIES
- Replace batteries once a year
- Good time: daylight saving time
- Use correct battery type
- Don’t use rechargeable batteries
Every 6 Months
CLEAN YOUR ALARMS
- Vacuum dust and cobwebs
- Use soft brush attachment
- Don’t use water or cleaning products
- Clean inside and outside
Every 10 Years
REPLACE THE ENTIRE UNIT
- Sensors degrade over time
- Replace after 10 years max
- Check manufacture date on back
- Consider 10-year sealed battery units
False Alarms
DON’T DISABLE — FIX
- Relocate if too close to kitchen
- Switch to photoelectric near cooking
- Use hush button, not battery removal
- Clean alarm — dust causes false trips
Record Keeping
TRACK YOUR ALARMS
- Note install date on each alarm
- Mark battery change dates
- Set phone reminders for testing
- Keep receipts for warranty claims
CHIRPING ALARM? Replace the battery immediately. Don’t disable it!
Carbon Monoxide (CO) Alarms
Carbon monoxide is a colorless, odorless gas that can kill you. You can’t see it, smell it, or taste it. CO alarms are the only way to detect it.
Where to Install CO Alarms
Install CO alarms outside each sleeping area and on every level of your home.
Required Locations
- Outside each sleeping area
- On every level including basement
- Near attached garages
- Near fuel-burning appliances
Placement Height
- Wall-mount: 5 feet above floor
- Can be on ceiling
- Follow manufacturer instructions
- CO mixes with air at all levels
Where NOT to Install
- Within 15 feet of fuel-burning appliances
- In bathrooms or near steam
- Near windows or vents
- In kitchens (cooking fumes interfere)
Sources of CO
- Gas furnaces and water heaters
- Fireplaces and wood stoves
- Gas appliances
- Vehicles in attached garages
Seasonal Risks
- Winter: furnaces, space heaters run more
- Power outages: generator misuse spikes
- Snow can block exterior vents
- Test alarms before heating season
Digital Display Models
- Show real-time CO levels in PPM
- Detect low-level chronic exposure
- Peak level memory feature
- Recommended for homes with gas appliances
If Your CO Alarm Sounds
IMMEDIATE ACTION REQUIRED:
- EVACUATE IMMEDIATELY – Get everyone out and to fresh air
- Call 911 from outside or neighbor’s home
- DO NOT re-enter until fire department clears the building
- Seek medical attention if anyone has symptoms
CO Poisoning Symptoms:
- Headache, dizziness, nausea
- Confusion, weakness
- Chest pain, vomiting
- Flu-like symptoms (but no fever)
CO Alarm Maintenance
Monthly: Test
Press test button to verify alarm works
Annually: Batteries
Replace batteries unless sealed unit
5-7 Years: Replace
Replace entire unit per manufacturer specs
Ongoing: Vent Checks
Keep exterior vents clear of snow, debris, and nests
Combination Smoke/CO Alarms
Combination units detect both smoke and carbon monoxide. They can be a cost-effective solution but should not replace dedicated smoke and CO alarms in all required locations.
Advantages
- Fewer devices to install
- Cost savings
- Less wall/ceiling space used
- One device to maintain
Considerations
- May need additional units for full coverage
- Placement must work for both smoke and CO
- Check that it meets both standards
- May need separate alarms in some locations
What to Look For
- UL 217 (smoke) and UL 2034 (CO) listed
- 10-year sealed lithium battery
- Wireless interconnect capability
- Voice alerts that announce hazard type
Special Needs Alarms
If anyone in your home is deaf, hard of hearing, or has other special needs, specialized alarms are available:
Hearing Impaired
- Strobe light alarms
- Bed shaker alarms
- Extra-loud alarms
- Low-frequency alarms
Visual Impairments
- Extra-loud audible alarms
- Voice alarms with location info
- Tactile notification devices
Mobility Limitations
- Interconnected alarms for early warning
- Alarms in all rooms
- Alert neighbors/caregivers
Quick Reference Guide
| Task | Frequency | Action |
|---|---|---|
| Test alarms | Monthly | Press test button |
| Clean alarms | Every 6 months | Vacuum dust/cobwebs |
| Replace batteries | Annually | Install new batteries |
| Replace smoke alarms | Every 10 years | Install new units |
| Replace CO alarms | Every 5-7 years | Check manufacturer date |