Illinois Carbon Monoxide Safety Checklist for Homes and Rentals

Carbon monoxide risk is easy to overlook because you cannot see or smell it. The fix is usually simple: test the alarm, check the appliances, and make sure everyone in the home knows the warning signs.

At a glance

Check	Why it matters
Test every CO alarm	Working detectors are the first line of defense.
Inspect fuel-burning appliances	Furnaces, water heaters, and fireplaces deserve regular attention.
Review expiration dates	Old detectors can fail quietly.
Know the symptoms	Fast recognition matters more than guessing.
Talk to renters and guests	Everyone should know what to do if an alarm sounds.

What to do now

Test each carbon monoxide alarm in the home today.
Replace missing, expired, or non-working units.
Check furnaces, water heaters, fireplaces, and generators for proper ventilation.
Make sure people in the house know where to go if an alarm sounds.
Keep the contact info for your landlord or maintenance company close at hand if you rent.

If you rent

Ask whether detectors are installed on every required level.
Find out when the last appliance inspection happened.
Do not assume a hallway alarm means your unit is covered; verify it.

Why this matters in Illinois

Cold-weather heating, older housing stock, and everyday appliance use all make carbon monoxide a practical home-safety issue across the state. This is one of those checks that takes minutes and can prevent a serious problem later.