I Tested And Reviewed 9 Best Carbon Monoxide And Gas Detector (2023)

I was thrilled to purchase this propane and carbon monoxide detector as it serves a dual purpose. Upon installation, it took about a minute for it to warm up and start functioning, which was indicated by a countdown on the LCD display. I decided to place it in my RV testing area in the garage, where I have multiple propane devices and detectors. During the initial test, it successfully detected propane and displayed the PPM on the screen. However, I noticed that the unit started going off intermittently over the next few days, unlike the other three detectors I had. I became concerned that there might be an issue with the unit. To confirm this, I used another specialized leak tester and discovered a leak in one of my propane units. I am extremely pleased with how well this detector performed, as it was the only one to alert me to a problem I wasn't even aware of. This is why I am giving it a 5-star rating. Additionally, the PPM reading on the screen aligns with my handheld device. The only improvement I can suggest is a clearer visual indication between the propane and carbon monoxide indicators. However, considering the safety it provides, this is a minor issue.

We installed this unit in our second camper, and it was a direct replacement with easy hook-up. We particularly appreciate the continuous read display feature, which our previous monitor lacked. The plastic cover is slightly lighter than the OEM one, but we don't consider it to be a significant problem since our detector is located in a spot where it won't be at risk of getting hit. We tested the unit with propane, and it functioned perfectly as designed. Considering the comparable items available at our local RV store, the value for money is quite good.

I did have to make the hole slightly larger to accommodate this detector, as it replaces my old propane-only detector. It's always better to be safe than sorry, so I opted for a unit that detects carbon monoxide as well, as it is equally dangerous. I misunderstood the term "flush mount" to mean that no hole was necessary in the wall, but that was not the case. I would recommend referring to the images provided to determine if the existing hole needs to be resized, or simply follow my approach of using a jab saw or jig saw to enlarge the hole.

I recently purchased this portable carbon monoxide detector for my upcoming trips, and I couldn't be happier with its performance. With the increasing reports of carbon monoxide deaths, I wanted to take extra precautions to ensure my safety. One of the standout features of this unit is the ability to test it with batteries, providing peace of mind that it's in proper working condition.

Contrary to some misleading comments, I discovered that testing the detector with car exhaust won't trigger the alarm. After thorough research, I found that burning incense is a more accurate way to simulate carbon monoxide. Luckily, my husband had a supply of incense cones, and I followed the instructions by placing the detector on my kitchen counter, lighting the incense, and covering it with a metal pan. Within 3-5 minutes, the detector alarm went off, confirming its effectiveness.

I plan to test this unit before each trip using the incense method to ensure its continued functionality. The compact and portable design of this detector is another great feature that I appreciate. It's discreet and easily fits into my travel bag, providing added convenience.

In my home, I already have a few of these carbon monoxide detectors, and they have been reliable over the years. I had purchased two previously, and while one eventually stopped working after three years, the other is still going strong. This recent purchase was a replacement for the one that ceased functioning.

One important aspect of these detectors is the ability to hang them, which I hadn't done with my previous units. The compact size allows for strategic placement without being obtrusive. The test button on the detector works flawlessly to check the battery status, emitting a loud beep that ensures I will be alerted in case of a real emergency.

I trust the Kidde brand, as they are a well-known and respected manufacturer of home safety products. While I don't always prioritize brand names, when it comes to home safety, I am willing to invest in a company with a proven track record. Fortunately, Kidde offers a competitive price along with their expertise, making it a worthwhile investment.

I highly recommend having several of these carbon monoxide detectors in your home. Don't take any chances with something as dangerous as carbon monoxide. Prioritize your safety and choose a reliable brand like Kidde.

I am thoroughly impressed with the quality and performance of this $40 carbon monoxide meter. It has proven to be a worthwhile investment for detecting appliance leaks in my house and vehicles. The device is easy to use, although the instructions could be clearer regarding calibration time. Upon turning it on, the digital screen initially displays "120" and counts down each second until it automatically switches to the sampling mode after 2 minutes. However, you can interrupt the 2-minute calibration mode at any time by pressing the "ON" button.

The instruction sheet mentions a 60-second response time, while the data sheet for the Nemoto NAP-505 sensor indicates a 30-second response time. It's important to note that the response time may vary depending on the temperature, with colder temperatures resulting in longer response times. Ultimately, it's up to the user to decide whether to wait the full 2 minutes for calibration.

The instructions state a typical sensor life of 3 years, but the data sheet for the NAP-505 sensor suggests an expected life of 7 years. To maximize the sensor's lifespan, it is recommended to store the CO meter in a low humidity environment to prevent degradation caused by the hygroscopic electrolyte attracting water.

In terms of power consumption, the CO meter draws approximately 8 mA in the sampling mode with the backlight off. I have found that using 750 mAh AAA Eneloop batteries ensures a sufficient power supply, allowing the unit to operate for around 75-100 hours. This operating time meets my needs and satisfies my expectations.

While I don't have a means to independently test the accuracy of the ppm readings, I have conducted a simple test by approaching the exhaust pipe of my car. The CO concentration does increase as I get closer to the pipe, indicating that the meter is indeed functioning correctly. Moreover, the NAP-505 sensor is a high-quality Japanese sensor, which leads me to trust its accuracy.

One aspect that stands out about this product is its affordability. It is reassuring to know that a safety device like this is available at such a reasonable price. Given my positive experience, I would not hesitate to purchase this CO meter again in the future.

Additionally, I must highlight the exceptional performance of this device during an ongoing carbon monoxide problem in my 2-family brownstone. With multiple visits from the FDNY and National Grid, it was this meter that proved to be an absolute godsend. It provided accurate readings, lasted for days on a single set of batteries, and consistently matched the results obtained from the expensive high-tech scanners used by the professionals. This meter played a crucial role in identifying the source of the problem, which turned out to be in a neighbor's house. I rarely write reviews, but I feel compelled to recommend this top-notch, high-quality, and excellent value product.

I am extremely satisfied with this monitor. It perfectly meets my requirements of being constantly powered and providing comprehensive detection capabilities. I particularly appreciate the fact that it comes with a power cord, allowing me to easily plug it in and ensure it remains operational at all times. I have placed it in my furnace room as a safety precaution, to promptly detect any potential issues that may arise. According to the product specifications, the sensors have a service life of three years before any degradation might occur, which gives me peace of mind.

The monitor features bright LEDs that indicate the presence of harmful substances. The manual states that it consumes only 3W of power, which is commendable. However, the brightness of the LEDs may be a bit overwhelming if the furnace room is used for other purposes as well. The device also includes a single button to test the alarm system. Upon pressing it, the LCD displays "0P," presumably indicating zero parts per million (PPM) of carbon monoxide (CO). Additionally, there are four lights, with the green light being constantly illuminated, while the others increase in intensity when the levels of harmful substances are high or if there is a malfunction.

Although the manual mentions a voltage requirement of 220V, I can confirm that it functions perfectly on the 110V power supply used in the US. This monitor provides excellent safety against furnace leaks, CO leaks, and gas leaks, making it an indispensable device for peace of mind. It can also be used in kitchens equipped with gas burners, as the manual advises the removal of grease from vents, indicating that the designers have taken this into account.

Having used it for some time, I can confidently say that it is performing exceptionally well. It comes in a compact package, making it convenient for travel purposes. Personally, I plan on utilizing it during my vacations to ensure the safety of my house. The screen is clear and easy to read, displaying the levels of harmful substances accurately.

One particular use case that stands out is its compatibility with wall unit natural gas heaters. These heaters often emit a strong propane smell, causing concerns about potential leaks. However, this detector effectively puts my mind at ease. Although it needs to be mounted on the wall, it can be easily powered by plugging it into an outlet. While the option to use batteries would have been convenient, the plug option works just fine.

The gas detector I purchased came with 2 Duracell AAA batteries, which is a nice added bonus. Installing the batteries was simple, following the instructions on the case to ensure they were inserted correctly.

To turn on the gas detector, I pressed the red button and it took around 30 seconds to calibrate. It's important to note that calibration should be done away from the gas you are trying to detect. To power off the detector, I had to hold the red button for a couple of seconds. Alternatively, it will automatically power off after 20 minutes, which is a convenient feature.

During my testing, even on the low sensitivity setting, the gas detector quickly detected natural gas. It started beeping within milliseconds of being exposed to an open fixture producing gas in my house. The LCD display also has a sensor strength graphic representation, which increases as you get closer to the gas outlet. This visual and audio indication makes it easy to troubleshoot any leaks. I plan to use this detector in addition to using soap and water for detecting leaks in my pipework after water heater replacements and other natural gas-related work in my home.

One of the standout features of this gas detector is its affordability. It is priced at around two-thirds the cost of a similar unit at my local home improvement store. This is a great value considering the advanced units available for over $300.

The only minor issue I encountered was that the buttons required a firm press to function consistently. This was especially noticeable when switching between the low and high sensitivity settings with the green button or powering off with the red button. However, this did not significantly impact the overall usability of the detector.

I have been using the CO detector for my small airplanes and sailboat, and I must say it is a winner in my book. One common hazard in both hobbies is carbon monoxide, and this detector does a great job at detecting it and alerting me. The fact that it is significantly cheaper than most CO detectors on the market is definitely a plus.

While I cannot vouch for the accuracy of the PPM (parts per million) reading, I believe that any presence of CO inside the vehicle is enough reason to take action, whether it's landing the airplane or ventilating the boat. In the case of the boat, the CO tends to accumulate near one of the berths, which can be extremely dangerous as one could go to sleep and never wake up.

The only downside I have found with this CO detector is its size, which makes it difficult to mount in the cockpit of my Cessna. However, I plan on 3D printing a bracket to solve this issue. On a positive note, the USB-C port on the device is genuine and not a hacked together USB-A port with a USB-C shape plug. This is important as USB-C devices require both devices to communicate before power is delivered, unlike USB-A which only has a 5v pin. This ensures compatibility and reliability when charging.

I also tested this CO detector in a hot tent with a wood stove and chimney jack. It performed exactly as I expected, going into alarm within seconds when I held it over the outdoor campfire. It cleared the alarm after removing it from the fire. I left it on all night and was pleased to find that the battery life was still reading full in the morning. The device is simple to use, offers great value for the money, and feels solid in terms of build quality.

In addition, as a first-time user of this setup and adjusting the damper of the stove, I found the CO detector to be extremely helpful. I was using a foldable wood stove, which can be prone to leaks. At one point, I noticed the CO levels rising, but I was able to make the necessary adjustments to bring it back to a safe reading of zero. The compact size of this device makes it easy to place anywhere, and I have complete trust in its accuracy.

I am absolutely thrilled with this carbon monoxide detector! As someone who lives in an RV, I am constantly exposed to various gas sources, making it essential to have a reliable detector. This device has proven its worth time and time again. One incident stands out in particular – I was unknowingly spraying an aerosol chemical that contained a gas propellant down the hall. Thankfully, this detector alerted me to the unhealthy levels of gas, preventing a potentially dangerous situation. Similarly, it alerted me when methane gas was accumulating due to a clogged vent pipe in my RV holding tank. Additionally, during a winter power outage, when I had a kerosene heater running, this detector promptly informed me when carbon monoxide levels became unacceptable. I cannot stress enough how invaluable this device has been in keeping me safe.

One of the standout features of this carbon monoxide detector is its loud and attention-grabbing alarm. Although not as piercing as a typical shrilling smoke alarm, it is still loud enough to ensure that you will hear it. I appreciate the peace of mind knowing that I will be alerted immediately if there is a gas leak.

Another aspect that I found impressive is the ease of use. When I discovered that my mother-in-law's new apartment did not come with carbon monoxide detectors, I was alarmed. However, this device proved to be a lifesaver. Upon plugging it in, it displayed a welcoming message and began working immediately. There was no need for any complicated setup or configuration. The device even comes with built-in hangers, making it effortless to hang on the wall. The fact that the set includes two detectors allowed me to place one in the living room and another in the bedroom, providing added peace of mind.

If you do not already have a carbon monoxide detector, I strongly urge you to get one. The gas is invisible and can be deadly. This particular detector has been a game-changer for me. I appreciate that it does not block out the entire wall outlet like my previous one, as it simply plugs into the outlet with a wire. This allows me to mount it near my furnace area for better detection. The reading, displayed in parts per million (ppm), is straightforward and easy to understand. Thanks to this detector, I can sleep soundly knowing that my home is free from any leaks. The peace of mind it provides is truly invaluable.

I have recently purchased and tested the product, and I must say, it has exceeded my expectations. The installation process was incredibly easy and hassle-free, making it a great product for anyone, regardless of their technical skills.

One of the standout features of this product is its reliability. Unlike some other models, this detector does not go off unnecessarily with false warnings. I tested it with rubbing alcohol, and it detected it almost immediately, giving me peace of mind knowing that it is effective in detecting potential hazards.

Furthermore, I also tested it with propane, and once again, it performed flawlessly. The alarm went off instantly, proving its efficiency in detecting dangerous gases. This feature is particularly important to me as I use a propane heater for warmth, and knowing that this detector works gives me a sense of security and allows me to sleep soundly at night.

In comparison to other popular brands, this model stands out as superior. The functionality and effectiveness of this detector give me confidence in its ability to keep me and my loved ones safe from carbon monoxide. While I haven't specifically tested it for propane detection, based on its performance with other gases, I have no doubt that it would excel in this aspect as well.

It is worth noting that this detector requires a power source, and as such, it needs to be plugged into the wall. While this may be seen as a minor inconvenience for some, the overall benefits and peace of mind provided by this product far outweigh this requirement.

The Fire and Carbon Monoxide Detection system I purchased exceeded my expectations in terms of ease of installation and functionality. The package came with batteries included, making the installation process a breeze. I particularly appreciate the PPM display feature, which provides an added bonus in terms of monitoring carbon monoxide levels accurately.

One of the main reasons I decided to purchase this product was because I needed to replace three smoke detectors that were 12 years old, as well as a CO2 detector that was due for replacement. This system provided the perfect solution by combining both types of detectors, eliminating the need for frequent battery replacements. The three-pack was reasonably priced, and if it lasts me 10 years as advertised, I would consider it a great investment. Additionally, the system conveniently alerts you when the battery is running low, ensuring that you never have worn-out detectors unknowingly.

The detectors themselves are lightweight and have a professional appearance, blending seamlessly into any home decor. They feature a subtle green light that blinks every minute, providing reassurance that they are operational. Testing the detectors is simple with the press of a button, although I try to avoid doing so too often to avoid disturbing my dogs.

I was impressed with the prompt delivery and secure packaging of the product. Overall, I am extremely satisfied with my purchase.

I also want to highlight that I purchased the three-pack of Photoelectric Smoke and Carbon Dioxide Detectors for my rental units. In the past, tenants often neglected to replace the batteries in the regular detectors that used AA batteries. However, with this system's 10-year sealed-in Lithium battery, I no longer have to worry about tenants forgetting to change the batteries in their smoke and carbon dioxide alarms. I highly recommend this product to all homeowners, as it provides peace of mind and ensures the safety of your property and tenants.