A CO alarm sitting on a table, with circles showing sound emanating from the device.

Choosing a CO Alarm That Works for You

Find one that fits the way you live.

May 4, 2026

It’s Taco Tuesday. Dishes are stacked in the sink. The dog is curled up on the couch. And the house is finally quiet after a long day.

But somewhere in the background, a furnace kicks on. Maybe a car was left idling in the garage with the door open. Or maybe a fireplace damper didn’t quite open all the way. And suddenly, something invisible begins to build.

That’s carbon monoxide — a gas you can’t see, smell or taste.

It’s often called the “silent killer” because most people don’t know it’s there until symptoms like headaches, dizziness, nausea or confusion start to set in. The only way to detect it is with a CO alarm.

It can all feel scary and overwhelming, but Kidde makes it easy to help stay ahead of it — and our latest CO alarms are more accurate and easier to live with than ever before.

A couple sitting on the couch with their dog.

Finding the Right Fit for Your Home

In three easy steps:

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Step 1
Choose Your Detection Type
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Step 2
Select Your Power Source
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Step 3
Consider Upgraded Features

Step 1: Choose Your Detection Type

Step 2: Select Your Power Source

Step 3: Consider Upgraded Features3

  • Low Level CO Alerts: Helps protect sensitive family members, like kids, seniors and pets.2
  • 10-Year Never-Replace Battery:4 No battery changes or chirps.
  • Backlit Digital Display: Check CO levels at a glance — even in the dark.
  • No Low Battery Chirps at Night: Rest easier with no 2 am chirps.
  • Smart Technology: Home or away, get alerts right on your phone.
A woman laying on the couch looking at her smart phone.

Take CO Off Your “I’ll Get to It” List 

Carbon monoxide doesn’t make a scene. And it doesn’t announce itself. Which is why it’s worth putting at the top of your list. And the good news is, staying ahead of it doesn’t have to be complicated.

Kidde CO alarms will have your back 24/7 — quietly keeping tabs on your air and stepping in the moment something’s off. And with all the great options we have, finding one that’s right for you is easier than ever. Because installing an alarm now is a whole lot better than an alarming situation later.

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1 Not approved for RV or boat use. Pack carefully to help avoid damage to the device. Remove batteries prior to travel and reinsert upon arrival. For use in conditioned spaces only. Test device before use to ensure proper operation. 
2 Children, elderly adults and pets are more vulnerable to low levels of carbon monoxide and may be affected faster. 
3 Available on select models only. 
4 10-year limited warranty (battery included). Constant exposures to high or low temperatures or high humidity may reduce battery life.