Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display
- Easy Installation - simply plug-in to a standard, 120V outlet in your home
- 9-volt battery backup provides protection during a power outage
- Digital LED display shows the level of carbon monoxide the CO alarm is sensing or states "GAS" when explosive gas is present
- 85-decibel alarm announces when carbon monoxide or explosive gas is detected
- Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested
Price & Buy Timing
Currently $69 — the 90-day average is $57.50.
All-time low: $41.70 on Thu Nov 21 (from 182 price checks).
Mubboo Value Score: 5.6/10
How it stacks up
Rated 4.6/5 — better than 60% of 53 Carbon Monoxide Detectors we track. Premium-tier pricing at $69.
Head-to-Head vs Category Leader
| Kidde | Kidde (Leader) | |
|---|---|---|
| Price | $69 | $79.97 |
| Rating | 4.6/5 | 5.0/5 |
| Reviews | 16,818 | 17 |
| Mubboo Score | 5.6/10 | 4.0/10 |
The Kidde Carbon Monoxide Detector, Propane, Natur is 14% cheaper but rated lower (4.6 vs 5).
Quick Specs
- Alarm
- Audible
- Color
- White
- Style
- Clamshell Packaging
- Unit Count
- 1.0 Count
- Item Weight
- 16 ounces
- Sensor Type
- Electrochemical
- Manufacturer
- Kidde
- Model Number
- KN-COEG-3
What reviewers say
Synthesized from 40 reviews · 100% verified purchases.
Choose a model with a digital display if you want to see real-time CO levels. Note that the low-battery chirp can be mistaken for a smoke detector, so test early; also remember these need replacement after 10 years.
Rating reliability
About Kidde
- 155 products in our database
- Average rating: 4.6/5 across all products
- Price range: $12.87 – $381.75
- Categories: Carbon Monoxide Detectors, Fire Extinguishers, Smoke Detectors
Other Carbon Monoxide Detectors
Frequently Asked Questions
Is the Kidde Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Exp worth buying in 2026?
It earns a Mubboo Score of 5.6/10, with a 4.6/5 rating from 16,818 reviews — better than 60% of Carbon Monoxide Detectors we track.
How much does the Kidde Kidde Carbon Monoxide Detector, Propane, cost?
It is currently $69. The 90-day average is $57.50 and the all-time low we recorded is $41.70.
How does it compare to the top-rated Carbon Monoxide Detectors?
The Kidde Carbon Monoxide Detector, Propane, Natur is 14% cheaper but rated lower (4.6 vs 5).
Sources & References
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