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Every Home Deserves Protection
With an AirKnight portable air quality monitor, safeguard your family, home, office, and even your vehicle from hidden dangers, including:
- PRECISE SENSORS that detect CO2 levels every 2 seconds in REAL-TIME
- LONG-LASTING 2000 mAh rechargeable Lithium-Ion battery, providing 14+ hours of continuous use
- STYLISH LCD DISPLAY for easy reading with a sleek, modern look
- EFFORTLESS SETUP – no Wi-Fi, apps, or technical expertise required
- INTEGRATED CO2 ALARM with adjustable thresholds, perfect for home growing, brewing, or fermentation
Trust the reliability of a proven product, proudly backed by AirKnight, an American company
Carbon Dioxide Kills
• AIR POLLUTION? CONGESTION? HEALTH RISKS?: Your next breath is invaluable. But if your home office is exposed to high levels of air pollution, lacks proper ventilation, or if you live in a densely populated area with small to medium-sized rooms, that breath could be filled with harmful carbon dioxide or viruses. These invisible threats can significantly impact your health, causing symptoms like headaches, dizziness, shortness of breath, sweating, fatigue, increased heart rate, elevated blood pressure, and in severe cases, asphyxia, coma, or convulsions.
• ENTER AIRKNIGHT: The AirKnight air pollution sensor is designed with a highly accurate CO2 protection system. By combining powerful, long-lasting CO2 sensors with advanced infrared (NDIR) technology, AirKnight detects hidden CO2 threats to keep you and your environment safe.
STAYS Here For You
AirKnight takes pride in being headquartered in the U.S., where we ensure every unit is thoroughly checked and subjected to comprehensive quality testing to deliver top-tier performance. We back our products for 2 years, giving you confidence in your purchase.
Our products are thoughtfully designed to be simple and user-friendly, complete with step-by-step instructional videos and easy-to-follow manuals. And for added support, our dedicated, U.S.-based team is readily available to assist you with any questions or concerns
CO2 Monitor or Air Quality Monitor?
Carbon dioxide is the silent issue we often overlook. Don’t waste money on unnecessary air quality metrics when what you truly need is a reliable CO2 monitor. Elevated CO2 levels are a frequent cause of unnoticed health issues like drowsiness, impaired cognitive function, and poor decision-making. While CO2 levels up to 1,000 ppm are generally considered safe, readings exceeding 2,000 ppm can lead to symptoms like dizziness, tinnitus, or even suffocation.
The AirKnight CO2 Monitor provides real-time air quality insights, making it an essential tool for every home office, bedroom, and classroom. Take control of your indoor environment and prioritize your well-being with AirKnight!
Everyone deserves clean air.
That’s why the AirKnight CO2 monitor is designed to be simple and effective—no complicated setups, apps, or smart devices required. Just reliable air quality monitoring wherever you need it.
Poor indoor air quality can affect your health in minutes. With AirKnight’s long-lasting 2000 mAh rechargeable Lithium-Ion battery, you can enjoy uninterrupted, round-the-clock air monitoring, ensuring peace of mind at home, in the office, or on the go.
Grow Tents, Homebrewing, & Wine Cellars
The AirKnight portable carbon dioxide detector is your all-in-one solution for managing home grow and fermentation setups. It provides real-time insights into CO2, humidity, and temperature, helping you maintain the perfect environment for your plants, beer, or wine.
No Data Logging
Beware of imitators—many CO2 monitors that claim to offer "data logging" fall short. The AirKnight CO2 detector goes beyond data tracking with its BUILT-IN CO2 ALARM, empowering you to take immediate action instead of being bogged down by endless data.
Customizable for Peace of Mind
Set your desired CO2 threshold, and the AirKnight’s customizable alarm will alert you the moment levels rise too high. Open a window, restore balance, and breathe easier knowing you’re in control of your indoor air quality.
HL
Reviewed in the United States on May 3, 2025
Monitors CO2. Be aware that this is not a CO (Carbon Monoxide) monitor, that's different. Just make sure CO2 monitoring is what you're looking for. Easy to set up and use. Comes with a Micro USB cord. After charging, will operate on battery. Audible alarm is loud enough to be hard on the same floor. Can't comment on the accuracy since I don't have anything to calibrate against but it does alert when we cook. Don't know if that's expected.
Kellie
Reviewed in the United States on May 19, 2025
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Adam
Reviewed in the United States on May 18, 2025
As advertised, it performs the detection of CO2 and does What It Says. Also what a Great Value! Furthermore, AirKnight seems like a reputable American company too which I liked a lot. For about the same, relatively cheap price, you might as well buy American, right?
HTK
Reviewed in the United States on May 16, 2025
I was hoping I could easily mount this on a wall to monitor levels in my garage. Having it on a table or bench is a hassle as it is always on a way. This isn't designed for that type of use, so I ended up coming up with a way to do it, but that was a bit of a pain. More of a pain however is that when this is plugged in to an outlet, it times out, and shuts itself down after a few hours... so I've got to continually go an unplug the device and replug it in to get it functioning again. This isn't going to work for what I want if I can't find a way to keep it working all the time. I don't honestly know why you'd want a CO2 sensor that times out. When it's on and working, its good, and gives me ancillary information (time temp humidity) which is an unnecessary bonus, but nice. However, I suspect I'll likely end up replacing this with a more traditional CO2 sensor that is on all-the-time and only alarms if there is an issue.
Redwood
Reviewed in the United States on May 15, 2025
This product shows a lot of information on it's small screen. It clearly displays carbon monoxide, humidity, and temperature. It can remain plugged in while in use or it can be portable and charged as needed. Set up was very easy. It seems accurate in comparison to my Aranet. I'm using this product now in an area with plants and it's great to help me know if the humidity is too much or little for my nursery. I'm very happy with this product and would recommend it for anyone wanting to monitor their air quality, temperature, and humidity in their space.
mcmc
Reviewed in the United States on May 11, 2025
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👍🏻
Reviewed in the United States on February 25, 2025
I’ve been using the AirKnight CO2 monitor for a week now, and I am very pleased with its performance. The device responds quickly to changes in CO2 levels, temperature, and humidity, helping to maintain a comfortable and healthy atmosphere at home. I especially appreciate the alarm function for high CO2 levels — it’s genuinely useful!I only wish I had purchased it earlier! It makes monitoring air quality so much easier, particularly during the winter when rooms are less ventilated. The device is also user-friendly and fits well into any interior. I highly recommend it to anyone who cares about their family’s health!
AVB
Reviewed in the United States on April 28, 2025
Wow, I am very impressed with this item. I had it out and set up within 20 minutes. When I first read the instructions, I thought it might be complicated, but it was very easy. I've lived in this apartment for 21 years and it's always been super dusty. It has made me wonder about the quality of the air I was breathing. When I set up the AirKnight, outside in clearer air to calibrate it, the PPM numbers worked as the instructions said. As soon as I bought it back into my apartment, it said the air quality was poor and the alarm started beeping. Well... now I know! So following the instructions I opened a window, and immediately the PPM numbers started decreasing. There are 3 little faces on the display and a bar under them shows increases or decreases as it monitors the quality of the air. All afternoon I've watched and it is very sensitive, and accurate, corresponding with the window being open or closed. I did this several times to confirm it was the accuracy of the AirKnight and not my hopes it was this accurate. This is my new, favorite, tech item, and I can't believe how accurate it is!
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