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The best carbon monoxide detector for apartments installs without wiring or holes, so renters can plug it in or set it on a shelf near the bedroom.
We compared 6 renter-friendly CO alarms by installation and portability.
Quick Answer: The Best Carbon Monoxide Detector for Apartments
- Best for Apartments Overall: Kidde Carbon Monoxide Detector, Plug-in with AA Battery Backup, 85 dB Alarm, 3rd Edition
- Best No-Install Portable: Kidde Carbon Monoxide Detector, AA Battery Powered, Portable for Travel or Home, 3rd Edition
- Best Digital for Renters: First Alert Plug in Carbon Monoxide Alarm with Digital Display CO615
- Best 10-Year Tabletop: Kidde Carbon Monoxide Detector, 10-Year Battery, Digital Display, 3rd Edition
- Best Smart for Renters: Kidde Smart CO Detector + Indoor Air Quality, Plug-in & AA Battery, COPDLQW
- Best Budget for Renters: First Alert Battery Carbon Monoxide Alarm CO400
The Kidde Plug-In CO Detector (AA Backup) is our best carbon monoxide detector for apartments. The Kidde Portable CO Detector sits on a shelf, and the First Alert CO615 Digital CO Alarm shows CO levels.
Best Carbon Monoxide Detector for Apartments Comparison Table
| Product | Best For | Type | Key Feature | Buy |
|---|---|---|---|---|
| Kidde Carbon Monoxide Detector, Plug-in with AA Battery Backup, 85 dB Alarm, 3rd Edition | Best for Apartments Overall | Plug-in CO alarm | 120V plug-in, 2-AA backup, peak level memory | Check Price |
| Kidde Carbon Monoxide Detector, AA Battery Powered, Portable for Travel or Home, 3rd Edition | Best No-Install Portable | Portable battery CO alarm | 2-AA batteries, event memory | Check Price |
| First Alert Plug in Carbon Monoxide Alarm with Digital Display CO615 | Best Digital for Renters | Plug-in CO alarm, digital | Digital display, peak level, battery backup | Check Price |
| Kidde Carbon Monoxide Detector, 10-Year Battery, Digital Display, 3rd Edition | Best 10-Year Tabletop | Battery CO alarm, digital | Sealed 10-year lithium battery, display updates every 15 s | Check Price |
| Kidde Smart CO Detector + Indoor Air Quality, Plug-in & AA Battery, COPDLQW | Best Smart for Renters | Smart plug-in CO alarm | Wi-Fi alerts, low-level CO, IAQ | Check Price |
| First Alert Battery Carbon Monoxide Alarm CO400 | Best Budget for Renters | Battery CO alarm | Electrochemical sensor, 85 dB | Check Price |
The 6 Best Carbon Monoxide Detectors for Apartments
Each pick below was compared on sensor type, power source, alerts, certification and value.
Kidde Carbon Monoxide Detector, Plug-in with AA Battery Backup, 85 dB Alarm, 3rd Edition
1The Kidde plug-in CO detector runs from a standard 120V outlet with two AA batteries as backup during outages.
👍 Pros & Cons
Pros
- Plug-in with 2-AA battery backup
- Peak Level Memory
- Test-Hush button
Cons
- No digital readout
📄 Detailed Review
- Type: Plug-in CO alarm
- Includes: Alarm + 2 AA batteries
- Key feature: 120V plug-in, 2-AA backup, peak level memory
It sounds an 85 dB alarm, and Peak Level Memory records the last time CO was detected or the unit was tested.
It is the simplest dependable CO alarm for most homes.
Kidde Carbon Monoxide Detector, AA Battery Powered, Portable for Travel or Home, 3rd Edition
2Kidde’s portable CO alarm runs on two AA batteries and can sit on a tabletop or hang on a wall.
👍 Pros & Cons
Pros
- Portable for travel
- Mount on a wall or set on a table
- Event Memory
Cons
- Batteries need changing
📄 Detailed Review
- Type: Portable battery CO alarm
- Includes: Alarm + 2 AA batteries
- Key feature: 2-AA batteries, event memory
It is light enough to pack for a rental or cabin.
It is a smart second alarm for travel.
First Alert Plug in Carbon Monoxide Alarm with Digital Display CO615
3The First Alert CO615 adds a digital display and a peak level feature that shows the highest CO concentration measured.
👍 Pros & Cons
Pros
- Digital display
- Peak level shows highest CO measured
- 7-year limited warranty
Cons
- Takes an outlet
📄 Detailed Review
- Type: Plug-in CO alarm, digital
- Includes: Alarm + backup battery
- Key feature: Digital display, peak level, battery backup
It plugs into an outlet with battery backup and sounds an 85 dB alarm.
It is our pick for a digital readout.
Kidde Carbon Monoxide Detector, 10-Year Battery, Digital Display, 3rd Edition
4Kidde’s 10-year CO detector runs on a sealed lithium battery, so you never change batteries.
👍 Pros & Cons
Pros
- 10-year battery, no battery swaps
- Digital display
- Wall or tabletop
Cons
- Whole unit is replaced at end of life
📄 Detailed Review
- Type: Battery CO alarm, digital
- Includes: Alarm
- Key feature: Sealed 10-year lithium battery, display updates every 15 s
Its digital display updates every 15 seconds, and three LEDs show normal, alarm and replace status.
It is our pick for no-hassle protection.
Check Kidde 10-Year Battery CO Detector, Digital Price on Amazon
Kidde Smart CO Detector + Indoor Air Quality, Plug-in & AA Battery, COPDLQW
5Kidde’s smart CO detector sends phone alerts through the Kidde app and also tracks humidity and TVOC levels.
👍 Pros & Cons
Pros
- Phone alerts with no subscription (maker claim)
- Low-level CO alerts from 30–70 ppm
- Tracks humidity and TVOC
Cons
- 2.4 GHz Wi-Fi only
📄 Detailed Review
- Type: Smart plug-in CO alarm
- Includes: Alarm + 2 AA batteries
- Key feature: Wi-Fi alerts, low-level CO, IAQ
It gives earlier low-level CO alerts at 30–70 ppm and a separate alarm pattern at 70 ppm.
It suits families who want alerts away from home.
First Alert Battery Carbon Monoxide Alarm CO400
6The First Alert CO400 is a battery-powered CO alarm with an electrochemical sensor and an 85 dB siren.
👍 Pros & Cons
Pros
- Battery-powered, works in outages
- End-of-life chirp
- 5-year limited warranty
Cons
- No digital readout
📄 Detailed Review
- Type: Battery CO alarm
- Includes: Alarm + batteries
- Key feature: Electrochemical sensor, 85 dB
An end-of-life chirp tells you when to replace it, and it carries a 5-year limited warranty.
It is a budget favorite.
How We Chose the Best Carbon Monoxide Detector for Apartments
To choose the best carbon monoxide detector for apartments, we compared popular CO alarms and smoke-and-CO combos on Amazon by power source, display, alerts, listed standards and owner feedback.
CDC advises installing battery-operated or battery back-up CO detectors near every sleeping area; see the CDC carbon monoxide poisoning basics.
Product details in this guide are based on manufacturer specifications and verified owner feedback. Read more on our How We Test page.
Buying Guide: CO Alarms for Renters
Keep these points in mind before you buy.
No-drill installation
Plug-in alarms use an outlet, and many battery alarms can sit on a tabletop, so you do not need to drill.
Where to install CO alarms
CDC advises a detector near every sleeping area. Many makers also suggest one on every level; follow the manual on distance from fuel-burning appliances.
Test and check batteries
Press the test button monthly, and check batteries when you change the clocks each spring and fall, as CDC recommends.
Renter Tips
Stay safe in a rental:
- Ask what your landlord provides.
- Add one near your bedroom.
- Take it when you move.
- Report fuel appliance issues.
Quick answers about the best carbon monoxide detector for apartments.
Frequently Asked Questions
What is the best carbon monoxide detector for apartments?
The best carbon monoxide detector for apartments is the Kidde plug-in with AA backup, with Kidde’s portable alarm for no-outlet spots.
Does my landlord have to provide a CO alarm?
Rules vary by state and city; ask your landlord and check local law.
Can I take my alarm when I move?
Yes, plug-in and battery alarms move with you.
Where should renters place a CO alarm?
Near every sleeping area, as CDC advises.
Do apartments without gas need CO alarms?
CO can come from shared heating or garages; many choose one anyway.
Final Verdict
Our final pick for the best carbon monoxide detector for apartments is the Kidde Plug-In CO Detector (AA Backup). Choose the Kidde Portable CO Detector if you want a shelf spot, or the First Alert CO615 Digital CO Alarm to show CO levels.
Related Guides
More home safety guides:
- Best Carbon Monoxide Detector
- Best Rated Carbon Monoxide Detector
- Best Carbon Monoxide Detector 2026
- Best Carbon Monoxide Detector Brands
- Best Emergency Power Supply for Home
Product details are based on manufacturer specifications at the time of writing. Prices and availability change often, so check Amazon for the latest price.
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