Smart CO Detectors That Actually Alert Your Phone
The Google Nest Protect is the best smart carbon monoxide detector for most households. It offers reliable sensing, clear voice alerts, and easy smartphone notifications. Its main limitation is the higher price compared to simpler models.
Carbon monoxide is a silent danger. A smart detector can alert you on your phone even when you are away. These devices also self test and integrate with other smart home gear.
We looked at the top selling smart CO detectors on Amazon. Each one offers a different balance of price, features, and reliability. This guide helps you choose the right one for your home.
The best picks, ranked
Google Nest Protect
The Nest Protect is a premium smart smoke and CO detector. It uses a split spectrum sensor for smoke and an electrochemical sensor for CO. It speaks to you with specific alerts like ‘Heads up, there is smoke in the kitchen’. App notifications are fast and reliable. It self tests automatically and dims the night light when you walk by.
Pros
- Voice alerts tell you the exact danger
- Phone notifications work from anywhere
- App provides detailed event history
Cons
- More expensive than basic detectors
- Some users report occasional false alarms from steam
Kidde Smart Smoke and Carbon Monoxide Detector
Kidde offers a reliable smart detector at a lower price. It includes voice alerts that state the type of danger and location. The wireless interconnect lets multiple units communicate. The app is simple and effective. It works with Alexa and Google Assistant for announcements.
Pros
- Voice and app alerts with location
- Wireless interconnect for whole home coverage
- Affordable price point
Cons
- App interface feels a bit dated
- No built-in night light
X-Sense Smart Carbon Monoxide Detector
The X-Sense smart CO detector offers essential smart features at a budget price. It has a clear digital display showing CO levels in parts per million. The app sends alerts and tracks history. It is compact and easy to install. Many users like the simple design and loud alarm.
Pros
- Very affordable
- Shows real time CO concentration
- App sends alerts and history
Cons
- Build quality feels less premium
- No voice alerts
First Alert Onelink Smart Smoke and Carbon Monoxide Detector
The First Alert Onelink is a sleek detector that works natively with Apple HomeKit. You can test and silence it from your iPhone. It has a built in night light with customizable colors. The voice alerts tell you the danger type. It connects to other Onelink units for whole home alerts.
Pros
- Native HomeKit integration with Siri control
- Beautiful design and night light
- Accurate and reliable sensors
Cons
- Requires a neutral wire for installation
- On the expensive side
Aegislink Smart Carbon Monoxide Detector
The Aegislink smart CO detector also measures temperature and humidity. It shows all readings on an LCD display. The app provides real time data and history. It has a loud 85 dB alarm and flashing LED. It is a good choice for monitoring overall indoor air quality.
Pros
- Displays temp and humidity
- Very loud alarm with flashing light
- Easy to install and use
Cons
- Less well known brand
- App could be more polished
Honeywell Home Smart Carbon Monoxide Detector
Honeywell Home makes detectors that integrate with their security systems. This smart model works with the Honeywell Home app. It offers voice alerts and remote control. The sensor is highly accurate and certified. It is a solid choice if you already have a Honeywell smart home system.
Pros
- Trusted brand with proven sensors
- Voice alerts and remote control
- Seamless integration with Honeywell ecosystem
Cons
- No support for Alexa or Google
- Limited to Honeywell app
Eve Room Indoor Air Quality Monitor with Thread
The Eve Room monitors CO, VOCs, temperature, and humidity. It uses Thread technology for fast and reliable smart home connections. It is a great addition to an Apple HomeKit setup. The display shows color coded air quality levels. It is not a dedicated CO alarm but a comprehensive air quality monitor.
Pros
- Thread support for faster response
- Tracks multiple air quality factors
- Sleek design with E ink display
Cons
- Not a certified CO alarm
- Higher price for what it offers
How to choose
The lineup, side by side
| # | Model | Power Source | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | Google Nest Protect | Battery or wired | Best overall | 9.6 | Check price |
| 2 | Kidde Smart Smoke and Carbon Monoxide Detector | Battery (2 AA included) | Best value with voice alerts | 9.2 | Check price |
| 3 | X-Sense Smart Carbon Monoxide Detector | Battery (CR123A) | Best for budget buyers | 8.8 | Check price |
| 4 | First Alert Onelink Smart Smoke and Carbon Monoxide Detector | Wired with battery backup | Best for Apple HomeKit | 9.0 | Check price |
| 5 | Aegislink Smart Carbon Monoxide Detector | Battery (AA) | Best with temperature and humidity | 8.5 | Check price |
| 6 | Honeywell Home Smart Carbon Monoxide Detector | Battery (AA) | Best for professional monitoring | 8.9 | Check price |
| 7 | Eve Room Indoor Air Quality Monitor with Thread | Battery (USB rechargeable) | Best for Thread support | 8.3 | Check price |
Questions worth asking
What is a smart carbon monoxide detector?
A smart carbon monoxide detector is a device that detects CO gas and sends alerts to your smartphone. It also typically has a loud alarm and can integrate with other smart home devices.
How do smart CO detectors send phone alerts?
They connect to your home Wi-Fi network and use a companion app. When CO is detected, the device sends a push notification to your phone, even if you are away.
Do smart CO detectors require a subscription?
Most smart CO detectors do not require a subscription for basic alerts. However, some professional monitoring services may charge a monthly fee for emergency response.
Can smart CO detectors work with Alexa or Google Assistant?
Many models support Alexa and Google Assistant. You can use voice commands to check status or silence alarms. Check the product specifications for compatibility.
How long do smart CO detectors last?
Most CO detectors have a lifespan of 5 to 7 years. The sensor degrades over time. The device will typically alert you when it needs replacement.
What is the difference between a smart CO detector and a regular one?
A regular CO detector only sounds an audible alarm. A smart detector also sends notifications to your phone, allows remote monitoring, and often has self testing and voice alerts.
Are smart CO detectors as reliable as non smart ones?
Yes, smart detectors use the same electrochemical sensor technology. The smart features add convenience, but the core detection is equally reliable. Look for certifications like UL listed.
How many smart CO detectors do I need?
The National Fire Protection Association recommends at least one on every level of your home and near sleeping areas. Consider one for each major area.
Can a smart CO detector be used in an RV or camper?
Yes, many battery powered models are portable and suitable for RVs. Ensure the detector has a battery power option and is rated for mobile use.
What should I do if my smart CO detector alarms?
Immediately evacuate the premises and call emergency services. Do not ignore the alarm. Once you are safe, you can use the app to check CO levels and reset the detector.
The verdict
If you want the best overall performance, choose the Google Nest Protect. It offers reliable detection, clear voice alerts, and excellent app integration. For a budget friendly option that still provides solid smart features, the Kidde Smart Smoke and CO Detector is a great choice. If you are deeply invested in Apple HomeKit, the First Alert Onelink is the way to go. Focus on getting a model that fits your smart home ecosystem and your budget.
You might also need
Earbuds That Actually Stay Put During Workouts
Top Headphone Amplifiers for Audiophiles and Casual Listeners
Portable Graphics Cards That Actually Deliver Desktop Power
