10 Best Carbon Monoxide Detector for Home in 2020

Carbon monoxide Alarm Detector

If you are looking for a carbon monoxide detector for your home, then there is nothing better than to inform you about all of these products before going on the market. In this article, we will provide a comprehensive guide to the best carbon monoxide detectors currently on the market especially for home use.

Not only does this device save your life but it can also prevent you from attempted theft. We will talk about the various types of models and the factors to be considered during the purchase phase. It is necessary to make quality choices even with an eye on the wallet.

In addition, we will provide a brief overview of where and how to place these products and how to perform maintenance on them to ensure proper operation.

Best Carbon Monoxide Detectors in 2020

What are the best carbon monoxide detectors in 2020? There is nothing better than this high-end model to secure your family and your home optimally. It is a connected smoke and carbon monoxide detector which analyzes, speaks, and alerts you on your mobile in the event of a problem. It is able to detect where the danger is and informs all members of your family.

Take a look at the comparison chart below of 10 best carbon monoxide detectors in 2020:

Carbon Monoxide DetectorWeight 
Kidde Carbon Monoxide Detector [Our Top Pick]14.4 oz Check Price
Alert Plus Carbon Monoxide Detector6.4 oz Check Price
Kidde Firex AC Carbon Monoxide Detector14.7 oz Check Price
First Alert Carbon Monoxide Detector [Editor's Choice]9.3 oz Check Price
KN-COSM-IBA Smoke/Carbon Monoxide Detector3.75 lb Check Price
DASINKO 2 Pack Carbon Monoxide Detectors [Best for Price]0.16 oz Check Price
Kidde-i9010 Smoke Detector Alarm9.4 oz Check Price
Kidde Tamper Resistant Carbon Monoxide Detector10.2 oz Check Price
vitowell 2 Pack Carbon Monoxide Detector12.6 oz Check Price
Kidde Smoke Detector with Voice Warning
1.0 lb Check Price

1. Kidde KN-COEG-3 AC Plug-in Carbon Monoxide Detector

Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector for Home

When determining which carbon monoxide detector to choose, it is still important to consider the durability of the product in question. A device with good viability will always remain profitable. This is for example the case of this specimen from Kidde KN-COEG-3, the device is very practical and easy to install.

This device is certainly simple, but effective. Its digital interface is practical and indicates the level of CO present in the room where the equipment is mounted. You will only have to take a look at it to control the emanation of carbon monoxide in your home.

The unit is sensing as well as if gas is present. The gas sensor is a metal oxide sensor that detects natural gas or propane. Its Nighthawk has a low-profile design that makes it suitable for any room in your home. It includes 9-volt battery backup that provides protection during a power outage when AC-only units cannot provide protection.

The CO detector can be plugged into any standard A/C outlet. You can snap the plug into the back of the unit and can be rotated so the alarm remains vertical, independent of whether the electrical socket is mounted vertically or horizontally. It comes with 5-year warranty from the purchase date.

  • Convenient mounting options
  • LED Shows Sensor Status
  • Easy-to-read digital display
  • Two alarms in one
  • 9V Battery backup
  • Must be replaced after 7 years

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2. AP-6987Alert Plus  Carbon Monoxide Alarm Detector

Alert Plus Carbon Monoxide Alarm Detector

Next go to Alert Plus, it is a digital combine carbon monoxide detector with voice prompt, microprocessor control, support displaying of the carbon monoxide gas concentration and the time. This CO detector adopts catalytic combustion method sensor which is more stable and reliable. It also includes wall moles and batteries.

The unit comes on with a voice response and then does a 2-minute countdown to make sure it is operating correctly and shows any CO2 level on the little screen. Easy to install like any battery-operated model. It also comes with a couple of screws. This is a good unit with a good detection system.

It is very small and unobtrusive in appearance, not as bulky as the plugin type of monitors and it doesn’t block any of your outlets. This product is perfect for villas, factories, shopping malls, warehouses, office buildings, etc. The size is good and the portable convenience lets you take it anywhere you want.

Installation should be about waist high for CO2 detectors, and placed reasonably close to potential sources of CO2 when possible. This is different than a smoke detector which is installed high, like on a ceiling. You can install it that high, but most recommendations are about 5 feet above the floor for CO detectors.
  • Human voice prompt
  • High reliable electrochemical sensor
  • Low current consumption
  • Ultra-long standby time
  • Very cheap price
  • Quality is not very high
  • Voice is very loud

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3. Kidde Firex AC Photoelectric Carbon Monoxide Detector

Kidde 21007624

The Kidde front-loading smoke and carbon monoxide alarm detector offer you protection from two hazards fire, and CO in one unit. This AC-wire with battery backup alarm emits a beeping tone followed by a voice warning that clearly announces the danger by saying warning. Its price is very reasonable but for the quality, you can beat them.

It combines smoke and carbon monoxide detection and provides dual power – 120VAC and 9VDC. You should be able to use your existing Kidde plug. Just match the wires to replace the old plug with the new one. It will last 10 years according to the warranty and user manual.

The frontloading battery compartment designed uniquely that makes battery replacement quick and easy, and ensures proper installation. This is hard-wired with battery backup and in ‘series’. If one goes off, they all go off. The simple installation process makes it more useful device for home or office room.

They are not compatible with the hardwired alarms. These alarms have a third wire to connect to other hardwired alarms only. That said, these are great alarms. Recommend this type in hallway with the other type of sensor in bedrooms.
  • Low battery warning
  • AC-wire with battery backup
  • Built with high sensor technology
  • Eye watching out for the fire
  • Simple to install
  • Directions in several languages & very difficult to read

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4. First Alert – CO410 Carbon Monoxide Detector Alarm

First Alert Carbon Monoxide Detector for Home

Our next choice from First Alert, it is a great model with a beautiful display that is different from others. This unit keeps your family safe with this easy to use digital display and battery-operated carbon monoxide alarm. The battery-powered alarms provide continuous monitoring of CO levels, even if there’s a power failure.

It combines advanced electrochemical carbon monoxide sensor features. And the peak level feature displays the highest concentration of carbon monoxide measured. It is small and white and therefore will fit in with most wall colors. It will sit on its own, hang on the wall or you can just plug it in. The cord is long enough to do whichever works best for your home.

It is very easy to install and has very easy to read instructions. There is a green light. A red light would indicate that you need to replace the batteries. The batteries last a little over a year before needing replacement. This smoke detector is also great for the price and I highly recommend it.

It requires “weekly” testing according to the instructions and therefore needs to be installed in an easily accessible location and height. The unit is a little bit small, but the display provides much more information – battery condition and CO level if the alarm goes off.
  • A loud 85-decibel alarm sounds
  • Easy to operate and install
  • Comes with good instructions
  • 7 year limited warranty
  • Reasonable price
  • There are no LED indicators
  • Door part of the machine doesn’t stay closed

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5. Kidde KN-COSM-IBA Hardwire Combination Smoke Detector


The Kidde KN-COSM-IBA smoke detector is another battery-operated fire alarm system found in different parts of the world. With its high purchase rate, there is no doubt in our minds that this unit is a spectacular creation with stellar performance wherever it is used. It provides continuous protection for you and your devices like any other battery-powered device.

It comes with the 3 point plug with the wires as one unit. They are a combination of smoke and carbon monoxide. These are easy to install if you have already had an existing system wired in your house. New mounting brackets are included so that you can mount the unit to your existing box.

These new ones are an improved design using 2-AA batteries instead of the more expensive square 9volt type. This unit allows for battery replacement in the front of the unit eliminating the need to disconnect from the ceiling to access the battery compartment via the back of the unit.

The Kidde KN-COSM-IBA smoke detector battery uses ionization detection technology to detect all particles of fire invisible to the naked eye at a faster rate than the alarm system that uses photoelectric detectors. Although it does not look good, the overall quality is top-grade.

  • Price is very reasonable
  • Fast response real fires
  • Hardwired plus battery backup
  • Voice and alarm notifications
  • Very easy to install
  • Looks not very beautiful

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6. DASINKO 2 Packs Photoelectric Smoke Detectors

2 Packs Carbon Monoxide Detector for HomeThere’s a new smart smoke detector in town, and it’s here to stay. It is the DASINKO photoelectric smoke detector, a battery-operated alarm system for your homes and offices. This photoelectric unit is designed to help you keep yourself and your family safe. This system was designed to detect smoke from flaming fires such as grease and paper fires.

It is more sensitive to light smoke and slow smoldering fires, and timely alarm. Even in sleeping, there is no need to worry. It comes with a mounting bracket, screws and anchor plugs, just drilling holes in appropriate positions. With UL217 Certification, you can use these smoke alarms with greater confidence and safety.

This device powered by one 9V battery (included), it will not be affected by the power outage. This means that your home is continuously monitored and that all appliances are tested regularly to prevent any potential danger. It built with low power consumption and provides live service for over 10 years.

You need a little bit award when getting the battery to release the lever that allows the unit to close. Once you understand that the battery must be in place in order for the unit to twist in position to be secure then all is good. Photoelectric smoke alarm features a loud 85-decibel horn.
  • Great price for the two-pack
  • These alarms are small and attractive
  • High sensitive & quick responsive
  • Wide range of applications
  • Hardware included
  • The little red light blinks every 32 seconds

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7. Kidde i9010-White Sealed Smoke and Alarm Detector

Smoke Detector Alarm

This durable and high sensor technology alarm detector also comes from the Kidde brand. The unit measures just 5.6 inches in diameter and 1.5 inches in-depth, and it features a neutral with a white finish. This smoke alarm detector is UL listed, so you can be 100 percent confident of its quality.

This carbon monoxide detector features a red LED that flashes every 40 to 45 seconds to indicate that it is operating correctly. It sealed-in lithium power supply, so don’t need to replace the battery before the 10-year life of the alarm. For additional peace of your mind, this features alarm contains a Test/Reset button that enables you to periodically test its circuitry and horn.

The Kidde i9010 smoke detector also uses the tamper-evident feature to deter intruders and theft. You can place this device anywhere in your living space without any problem. It provides continuous protection for you and your devices like any other battery-powered device.

The Alarm function automatically activates when attached to the mounting bracket. It fit over the screws that held the vintage one in place. After the mounting plate installed, you just need to twist the detector onto it. A short beep tells you that it is working and activated. You can press the test button for a longer blast.

  • Sealed-in lithium battery
  • Self-activation function
  • Good quality product
  • Comes with 10-year life
  • Very simple to install
  • Battery is not serviceable
  • Screws are a little sturdy

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8. Kidde Tamper Resistant Plug-In Carbon Monoxide Detector

Kidde Tamper Resistant Plug-In Carbon Monoxide Detector for home

Without including the name of Kidde, it is impossible to make a perfect list of best carbon monoxide detectors. This unit is highly durable and very easy to use. In order to make installation easy, it comes with three batteries, two screws and dowels. In addition to the unbeatable quality/price ratio, these devices stand out for their sensitivity and the self-diagnostic function.

This device provides reliable protection against the dangers of carbon monoxide, written information & instruction, easy for anyone to understand, AC/dc digital alarm has a small sleek design that is suitable for all living areas. It also comes with 7-year limited warranty.

These units are about the size of a large fist. Each is unobtrusive on the wall, being white. There is a tamper-proof button so that children can’t accidentally turn it off. It can also turn sideways – 90 degrees. If the battery is missing or battery power is low, the unit will chirp every 60 seconds to indicate the batteries must be replaced.

The unit uses two AA batteries for backup when AC power is lost. The manual states, this carbon monoxide alarm requires a continuous supply of electrical power. It will not work without power. The Low Battery has a HUSH feature that allows you to press the button on the alarm and disable the “chirp” for a random period of up to 12 hours.
  • This is UL 2034 rated for residential use
  • Comes with a fair amount of paperwork
  • Very cheap price but high quality
  • Low battery warning
  • AA battery backup
  • LED status light that is not too bright

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9. Vitowell GS811-A Smoke & Carbon Monoxide Detector

2 Pack Combination Smoke and Carbon Monoxide Detector

Vitowell combination smoke and carbon monoxide alarm detector features a photoelectric sensor that detects the smoke most commonly produced by smoldering fires that provide sensitive detection while minimizing false alarms from cooking smoke or shower steam.

They are very unobtrusive when mounted on the ceiling or wall. Its unique alarm sounds and indicator lights on the face of the detector distinguish a smoke warning from a carbon monoxide warning. Each alarm has two different high tech sensors that work together and sound extremely loud.

These smart sensors are also very sensitive and can detect smoke that is a threat, and differentiate it from shower steam or smoky cooking, which pretty much eliminates false alarms sounding off. This is a great 2-pal set of combination smoke and carbon monoxide, with amazing value, giving two times the protection in one alarm.

This alarm has been also designed to help reduce environmental waste. It is a permanent unit that minimizes ecological impact by protecting the environment more, and it is a significant economic investment that any homeowner can make. This unit doesn’t contain any radioactive material.

  • Easy to clean & use
  • Small and affordable
  • Alarm’s varying frequency
  • The alarm is a loud beep
  • Inexpensive and very easy to install
  • This product is not UL certified
  • Only 5 years warranty

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10. Kidde i12010SCO Smoke & Carbon Monoxide Detector

Carbon Monoxide Detector for home with Voice Warning

Last but not least, this battery-powered model designed to act both as a smoke detector and as a carbon monoxide detector alarm system. The new units come with a wiring harness and mount that need to be installed as well. This device uses an 85-decibel siren, loud enough to be heard from a distance.

The alarm will perfectly adjust its smoke sensitivity in order to better discriminate between a real hazard and a false one. This constant communication functionality enhances the alarm’s overall performance in all fires. It is a reliable product and simple to install.

If the unit sounds and then stops, alarm memory will show the red LED will come on for 1.5 seconds every 16 seconds. You can replace alarms yourself with a little knowledge. Just make sure you follow the advice to turn off power at the circuit breakers.

There is no wireless function in this unit. They communicate with the other smoke alarms via the red wire. There is no green/ground wire, but the green LED display glow of this alarm is insanely bright IMO. The hush button will only work on the initiating unit.
  • Provides protection from two hazards
  • Ionization sensing technology
  • Voice warning system
  • Unobtrusive design
  • Beautiful green LED
  • A little bit expensive compare with others

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Buyer’s guide

Now let’s see what are the most important features that a good Carbon Monoxide detector must have, which we will often find in those listed in our ranking of the most popular 2020 devices.

The installation

How to buy a carbon monoxide detector better value for money? Mastering the installation of this unit can help you find an answer to this question. Such a device works best when you install it correctly. As a first step, this product should be placed where you can easily hear the alarm whether you are awake or asleep.

This type of device can be installed in your kitchen, in your bathroom, in your boiler room or even in your garage. These locations may provide an installation location that allows the detector to operate more accurately.

You can place this item where the household members spend the most time, especially if there are also combustion devices in those places. For example, you can put it in your bedroom or in the room where the family eats in order to be quickly warned before the risk of intoxication. You are also free to have several to install them in different places.

The display

The display of a carbon monoxide detector allows you to easily control and ensures that you can have all the necessary information to use it properly. Most of these devices are done through an LCD screen. Make sure it is clear and wide enough to read the data displayed at a glance.

The ideal screen allows you to see the concentration of CO in real-time. This gas has neither odor nor color, having information on this point allows you to know at what level this gas has accumulated.

Battery power

A carbon monoxide detector needs to be continuously powered so that it does not go out when the gas has accumulated and has reached a level of accumulation that can poison you.

These devices do not work always with the same power source. Some are powered by two batteries while others by one battery. Check that the system used by the model you choose guarantees a long-lasting use of this device in good condition. This will avoid you to replace often this component whose condition conditions the proper functioning of the device.

Some batteries, such as lithium batteries, have a life of up to 7 years. After seeing this feature, you are free to direct yourself to price comparison.

How to use a carbon monoxide detector?

Carbon Monoxide Detectoryou know that the use of a carbon monoxide detector is essential to reduce the risk of intoxication caused by gas. It should not be forgotten that this substance causes thousands of victims and a hundred deaths a year. However, it is not enough to buy this equipment to be safe. It is also important to install and use it properly.

Carbon monoxide alarms also have a limited life and when it is exceeded, no longer function properly in the presence of gas. It is recommended to make sure that the alarm works properly once a month.

Install the detector properly

To ensure optimal results, install this device in every room where there is a combustion appliance. If you use a stove or fireplace, put one in the living room or dining room. Do not forget to put some in the kitchen if you use a gas stove for cooking your meals.

Place where you always have to control

In the event that your heating equipment is located in the laundry room, place this equipment at the entrance so that you can hear the beep sound. If you are using a chimney as a combustion system, then place a detector in all the rooms that the ducts run through. In order to optimize the use of this device, post the device at least one meter away from the combustion system.

Regularly maintain the device

Use a clean damp cloth to regularly clean the outer case of the detector. This simple gesture will suffice to maintain this part. Eliminate dust and other residues that have accumulated inside the slots in the lid by using a narrow nozzle on your vacuum cleaner.

Beware of chemicals

Never use stripping products that could affect this unit. Avoid spraying air fresheners or chemicals in the form of an aerosol as close as possible to this type of equipment.

Test the device

Make sure your device is working properly, do not forget to test it once a week. By doing so, you will have the guarantee that you and all members of your family are truly safe. It is also the best way to become familiar with the alarm that can be annoying at first.

In addition to weekly checks, contact a qualified professional to carry out an assessment every year.

React in case of detection

If there is any detection of monoxide, turn off all your combustible equipment as much as possible. Then ventilate all the rooms by opening your doors and windows. Once done, leave the place as soon as possible.

Do not enter indoors if the alarm is still ringing and avoid using fuel-burning appliances if you have not yet contacted a qualified professional to perform the checks. If you have any doubts about the situation, do not hesitate to contact the emergency services.

Ventilate your house

If you want to enjoy the optimal use of this device, consider regularly ventilating your home. Avoid clogging the air inlets and outlets. This step of ventilation is essential to promote the renewal of indoor air. As a result, you will have the guarantee of heating yourself safely.

Frequently Asked Questions

What are the different types of carbon monoxide detectors?

There are simple CO detectors, conventional autonomous alarms and connected autonomous alarms. They have apps on smartphones and can send alert messages, diagnostic reports or light up the room in your presence.

How long does a carbon monoxide detector last?

The best carbon monoxide detectors have a lifespan of 7 or 10 years. Some models need to change the battery every year. On average, change the detector every 5 years, regardless of whether it still works. Indeed, these devices lose sensitivity over time.

How do I install a carbon monoxide detector?

Most current models accept all installation configurations: to be placed on a piece of furniture, to be fixed on a wall or to be fixed to the ceiling. Place the detector at a horizontal distance of 1 to 3 m from the hazardous equipment.

If you attach it to the ceiling, install it at least 30 cm from the wall. If you attach it to the wall, keep a distance of at least 15 cm from the ceiling.

How much does a carbon monoxide detector cost?

The price of carbon monoxide detectors varies depending on their power sources and specifications. Entry-level models cost less than 40 dollars. The mid-range ranges from 40 to 100 dollars. As for high-end carbon monoxide detectors, they are worth more than 100 dollars.

What is the appropriate number of detectors for a home?

It depends on the layout and size of the house. You should have at least one CO detector on each floor. That said, it’s a good idea to place one outside of each bedroom so that each family member is sure to hear the alert if it goes off. You should also place a carbon monoxide detector 1 to 3 m from your boiler or other fuel-based heat source.

Is a digital display safer than other types of detectors?

A digital carbon monoxide detector is often the best option for keeping your home safe, as it tells you even the smallest real-time emanation rate. If you have a digital display carbon monoxide detector, mount it at eye level so that it is easy to read.

What should I do if my smoke detector issues an alert?

Leave the house immediately. Transport those with symptoms of carbon monoxide poisoning to hospital. If you are unable to leave the house, open as many windows and doors as possible and call for help. If possible, turn off all possible sources of carbon monoxide.


As mentioned earlier, the carbon monoxide detector has the distinction of being odorless and colorless. Some models equipped with a double sensor are both a smoke and carbon monoxide detector. Therefore, it is practically imperceptible for the human being. To detect carbon monoxide in your home, an appropriate detector is therefore essential.

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