📋 FREE PRINTABLE — UPDATED 2026
Home CO Safety Checklist
29 items across 5 categories — detectors, appliances, vehicles, ventilation, and emergency planning. Print or save for your records.
How to use this checklist: Work through each section and check off every item. Items in the "CO Detector Placement" and "Emergency Plan" sections are the highest priority. Print this page (Ctrl+P or ⌘+P) to save as a PDF for your home safety records.
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CO Detector Placement
7 itemsAt least one CO detector on every level of the home, including the basement
One detector outside each sleeping area (hallway within 15 feet of bedroom doors)
One detector in or adjacent to an attached garage
Detectors installed per manufacturer instructions — not in dead-air corners
All detectors are UL 2034 listed (check label on back)
All detector expiration dates checked — sensors last 5–10 years
Battery-backup detectors tested monthly; plug-in detectors verified powered
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Fuel-Burning Appliances
7 itemsGas furnace serviced annually by a licensed HVAC technician
Gas water heater vents inspected for blockages, rust, or disconnection
Fireplace flue cleaned and inspected before each heating season
Gas stove burners checked — yellow or orange flames indicate incomplete combustion
Portable gas heaters used only with windows cracked; never used while sleeping
Gas clothes dryer vented to outdoors; vent hose checked for kinks or blockages
No charcoal grills, propane stoves, or generators used indoors or in garage
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Vehicle & Garage Safety
5 itemsVehicle never left running in attached or detached garage, even with door open
Remote starters: ensure vehicle is not parked in enclosed space when used
Garage door seals checked — CO can seep through gaps into living areas
Lawn mowers, snowblowers, and power washers operated outdoors only
Boat engine and generator exhaust directed away from cabin and seating areas
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Ventilation
4 itemsAll combustion appliance vents and chimneys are clear of bird nests, debris, ice
HVAC air intake not blocked by snow, leaves, or landscaping
No home weatherproofing seals combustion appliances into unvented spaces
Backdrafting checked: combustion appliances draw air correctly when tested
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Emergency Plan
6 itemsAll household members know what a CO alarm sounds like vs. smoke alarm
Emergency plan practiced: evacuate immediately, leave doors open, call 911 outdoors
Do NOT re-enter until cleared by emergency responders
Poison Control number saved: 1-800-222-1222
Local emergency number (911) confirmed with all household members
CO symptoms known by all: headache, nausea, dizziness, confusion, chest pain
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Protect Your Household
Complete Your CO Safety Setup with AirShield
The AirShield detector covers CO, methane, and propane — three of the most dangerous combustible gases. Plug-in, no tools, 10-year sensor.
Shop AirShield →Free to share and use. Cite as: AirShield CO Safety Checklist (airshield.store), 2026.